pot/merge.

16 files changed, 2768 insertions, 2656 deletions

diff --git a/src/lib/po/cs_CZ.po b/src/lib/po/cs_CZ.po
index 73cb50bd5..0d7824482 100644
--- a/src/lib/po/cs_CZ.po
+++ b/src/lib/po/cs_CZ.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-08-20 23:10+0200\n"
+"POT-Creation-Date: 2021-10-17 15:26+0200\n"
 "PO-Revision-Date: 2021-05-07 11:56+0200\n"
 "Last-Translator: Tomáš Begeni <begeni@razdva.cz>\n"
 "Language-Team: \n"
@@ -18,7 +18,7 @@ msgstr ""
 "X-Generator: Poedit 2.4.3\n"
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
 
-#: src/lib/video_content.cc:486
+#: src/lib/video_content.cc:496
 #, c-format
 msgid ""
 "\n"
@@ -27,7 +27,7 @@ msgstr ""
 "\n"
 "Snímková frekvence obsahu %.4f\n"
 
-#: src/lib/video_content.cc:451
+#: src/lib/video_content.cc:461
 msgid ""
 "\n"
 "Cropped to %1x%2"
@@ -35,7 +35,7 @@ msgstr ""
 "\n"
 "Oříznout na %1x%2"
 
-#: src/lib/video_content.cc:444
+#: src/lib/video_content.cc:452
 #, c-format
 msgid ""
 "\n"
@@ -44,7 +44,7 @@ msgstr ""
 "\n"
 "Poměr stran displeje %.2f:1"
 
-#: src/lib/video_content.cc:474
+#: src/lib/video_content.cc:484
 msgid ""
 "\n"
 "Padded with black to fit container %1 (%2x%3)"
@@ -52,7 +52,7 @@ msgstr ""
 "\n"
 "Vyplněné černou, aby se zmenšil do kontejneru %1 (%2x%3)"
 
-#: src/lib/video_content.cc:464
+#: src/lib/video_content.cc:474
 msgid ""
 "\n"
 "Scaled to %1x%2"
@@ -60,7 +60,7 @@ msgstr ""
 "\n"
 "Měřítko %1x%2"
 
-#: src/lib/video_content.cc:468 src/lib/video_content.cc:479
+#: src/lib/video_content.cc:478 src/lib/video_content.cc:489
 #, c-format
 msgid " (%.2f:1)"
 msgstr " (%.2f:1)"
@@ -105,7 +105,7 @@ msgstr "%1 (%2 GB) [%3]"
 msgid "%1 [Atmos]"
 msgstr "%1 [Atmos]"
 
-#: src/lib/dcp_content.cc:318
+#: src/lib/dcp_content.cc:320
 msgid "%1 [DCP]"
 msgstr "%1 [DCP]"
 
@@ -121,7 +121,7 @@ msgstr "%1 [video]"
 msgid "%1 [video]"
 msgstr "%1 [video]"
 
-#: src/lib/video_content.cc:439
+#: src/lib/video_content.cc:447
 #, c-format
 msgid ", pixel aspect ratio %.2f:1"
 msgstr ", poměr stran obrazových bodů %.2f:1"
@@ -170,7 +170,7 @@ msgstr "2.39 (Scope)"
 msgid "3D denoiser"
 msgstr "3D denoiser"
 
-#: src/lib/hints.cc:212
+#: src/lib/hints.cc:209
 msgid ""
 "4K 3D is only supported by a very limited number of projectors.  Unless you "
 "know that you will play this DCP back on a capable projector, it is "
@@ -216,7 +216,7 @@ msgstr ""
 "com/donate_amount?amount=10“>Přejít na Paypal a darovat€10</a></"
 "ul><p>Mockrát děkuji!"
 
-#: src/lib/hints.cc:169
+#: src/lib/hints.cc:166
 msgid ""
 "A few projectors have problems playing back very high bit-rate DCPs.  It is "
 "a good idea to drop the JPEG2000 bandwidth down to about 200Mbit/s; this is "
@@ -227,6 +227,13 @@ msgstr ""
 "200 MB/s; Je nepravděpodobné, že by toto nastvení mělo viditelný vliv na "
 "kvalitu obrázku."
 
+#: src/lib/text_content.cc:248
+msgid ""
+"A subtitle or closed caption file in this project is marked with the "
+"language '%1', which DCP-o-matic does not recognise.  The file's language "
+"has been cleared."
+msgstr ""
+
 #: src/lib/ffmpeg_content.cc:635
 msgid "ARIB STD-B67 ('Hybrid log-gamma')"
 msgstr "ARIB STD-B67 ('Hybrid log-gamma')"
@@ -235,7 +242,7 @@ msgstr "ARIB STD-B67 ('Hybrid log-gamma')"
 msgid "Advertisement"
 msgstr "Reklama"
 
-#: src/lib/hints.cc:146
+#: src/lib/hints.cc:143
 msgid ""
 "All of your content is in Scope (2.39:1) but your DCP's container is Flat "
 "(1.85:1).  This will letter-box your content inside a Flat (1.85:1) frame.  "
@@ -246,7 +253,7 @@ msgstr ""
 "Bude použit letter-box uvnitř rámečku Flat (1.85:1). Můžete nastavit DCP "
 "kontejner na Scope (2.39:1) v záložce \"DCP\"."
 
-#: src/lib/hints.cc:150
+#: src/lib/hints.cc:147
 msgid ""
 "All of your content narrower than 1.90:1 but your DCP's container is Scope "
 "(2.39:1).  This will pillar-box your content.  You may prefer to set your "
@@ -268,24 +275,24 @@ msgstr "Analýza zvuku"
 msgid "Analysing subtitles"
 msgstr "Analýza titulků"
 
-#: src/lib/hints.cc:368
+#: src/lib/hints.cc:365
 msgid ""
 "At least one marker comes after the end of the project and will be ignored."
 msgstr "Značka která přijde po konci projektu, bude ignorována."
 
-#: src/lib/hints.cc:473
+#: src/lib/hints.cc:470
 msgid "At least one of your closed caption files is larger than "
 msgstr "Jeden z vašich souborů skrytých titulků je větší než "
 
-#: src/lib/hints.cc:466
+#: src/lib/hints.cc:463
 msgid "At least one of your closed caption files' XML part is larger than "
 msgstr "Jeden z vašich XML souborů se skrytými titulky je větší než "
 
-#: src/lib/hints.cc:481
+#: src/lib/hints.cc:478
 msgid "At least one of your subtitle files is larger than "
 msgstr "Jeden z vašich souborů s titulky je větší než "
 
-#: src/lib/hints.cc:445
+#: src/lib/hints.cc:442
 msgid ""
 "At least one of your subtitle lines has more than 52 characters.  It is "
 "recommended to make each line 52 characters at most in length."
@@ -293,7 +300,7 @@ msgstr ""
 "Jeden z vašich řádků s titulky má více než 52 znaků. Doporučuje se, aby "
 "každý řádek měl maximálně 52 znaků."
 
-#: src/lib/hints.cc:447
+#: src/lib/hints.cc:444
 msgid ""
 "At least one of your subtitle lines has more than 79 characters.  You should "
 "make each line 79 characters at most in length."
@@ -301,7 +308,7 @@ msgstr ""
 "Jeden z vašich titulků má více než 79 znaků. Každý řádek by měl být dlouhý "
 "maximálně 79 znaků."
 
-#: src/lib/hints.cc:590
+#: src/lib/hints.cc:587
 msgid ""
 "At least one of your subtitles has more than 3 lines.  It is advisable to "
 "use no more than 3 lines."
@@ -309,7 +316,7 @@ msgstr ""
 "Jeden z vašich titulků má více než 3 řádky. Doporučuje se použít maximálně 3 "
 "řádky."
 
-#: src/lib/hints.cc:580
+#: src/lib/hints.cc:577
 msgid ""
 "At least one of your subtitles lasts less than 15 frames.  It is advisable "
 "to make each subtitle at least 15 frames long."
@@ -317,7 +324,7 @@ msgstr ""
 "Jeden z vašich titulků trvá méně než 15 snímků. Doporučuje se, aby každý "
 "podnadpis měl délku alespoň 15 snímků."
 
-#: src/lib/hints.cc:585
+#: src/lib/hints.cc:582
 msgid ""
 "At least one of your subtitles starts less than 2 frames after the previous "
 "one.  It is advisable to make the gap between subtitles at least 2 frames."
@@ -325,7 +332,7 @@ msgstr ""
 "Jeden z vašich titulků začíná méně než 2 snímky po předchozím. Doporučuje "
 "se, aby mezera mezi titulky byla alespoň 2 snímky."
 
-#: src/lib/hints.cc:633
+#: src/lib/hints.cc:630
 msgid ""
 "At least one piece of subtitle or closed caption content has no specified "
 "language.  It is advisable to set the language for each piece of subtitle or "
@@ -401,15 +408,15 @@ msgstr "Bitů na pixel"
 msgid "Bob Weaver Deinterlacing Filter"
 msgstr "Bob Weaver deinterlacing filter"
 
-#: src/lib/util.cc:598
+#: src/lib/util.cc:601
 msgid "BsL"
 msgstr "BsL"
 
-#: src/lib/util.cc:599
+#: src/lib/util.cc:602
 msgid "BsR"
 msgstr "BsR"
 
-#: src/lib/util.cc:590
+#: src/lib/util.cc:593
 msgid "C"
 msgstr "C"
 
@@ -417,7 +424,7 @@ msgstr "C"
 msgid "Cancelled"
 msgstr "Zrušené"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "Cannot contain slashes"
 msgstr "Nemůže obsahovat lomítka"
 
@@ -425,11 +432,11 @@ msgstr "Nemůže obsahovat lomítka"
 msgid "Cannot handle pixel format %1 during %2"
 msgstr "Nemužu zpracovat formát pixelu %1 během %2"
 
-#: src/lib/film.cc:1662
+#: src/lib/film.cc:1711
 msgid "Cannot make a KDM as this project is not encrypted."
 msgstr "Nelze vytvořit KDM, protože tento projekt není zašifrován."
 
-#: src/lib/util.cc:559
+#: src/lib/util.cc:562
 msgid "Centre"
 msgstr "Center"
 
@@ -497,7 +504,7 @@ msgstr "Kombinovat DCPs"
 msgid "Computing digest"
 msgstr "Výpočet digest"
 
-#: src/lib/writer.cc:535
+#: src/lib/writer.cc:531
 msgid "Computing digests"
 msgstr "Výpočet digests"
 
@@ -525,24 +532,24 @@ msgstr "Veškerý obsah ke sloučení musí nebo nemusí obsahovat titulky"
 msgid "Content to be joined must all have or not have video"
 msgstr "Veškerý obsah ke sloučení musí mít video nebo žádné video"
 
-#: src/lib/text_content.cc:305
+#: src/lib/text_content.cc:320
 msgid ""
 "Content to be joined must both be main subtitle languages or both additional."
 msgstr ""
 "Obsah, ke kterému se chcete připojit, musí být hlavní jazyky titulků, nebo "
 "oba další."
 
-#: src/lib/video_content.cc:207
+#: src/lib/video_content.cc:210
 msgid "Content to be joined must have all its video used or not used."
 msgstr ""
 "Obsah, který má být připojen, musí obsahovat všechna jeho použitá nebo "
 "nepoužitá videa."
 
-#: src/lib/text_content.cc:260
+#: src/lib/text_content.cc:275
 msgid "Content to be joined must have the same 'burn subtitles' setting."
 msgstr "Aby se spojil obsah, musí mít stejné nastavení  ’vypálené titulky'."
 
-#: src/lib/text_content.cc:256
+#: src/lib/text_content.cc:271
 msgid "Content to be joined must have the same 'use subtitles' setting."
 msgstr "Aby se spojil obsah, musí mít stejné nastavení ’použít titulky'."
 
@@ -554,61 +561,61 @@ msgstr "Aby se spojil obsah, musí mít stejné nastavení zpoždění zvuku."
 msgid "Content to be joined must have the same audio gain."
 msgstr "Aby se spojil obsah, musí mít stejné nastavení hlasitosti zvuku."
 
-#: src/lib/video_content.cc:239
+#: src/lib/video_content.cc:242
 msgid "Content to be joined must have the same burnt subtitle language."
 msgstr "Obsah, ke kterému se chcete připojit, musí mít stejný jazyk titulků."
 
-#: src/lib/video_content.cc:231
+#: src/lib/video_content.cc:234
 msgid "Content to be joined must have the same colour conversion."
 msgstr "Aby se spojil obsah, musí mít stejné nastavení  konverzi barev."
 
-#: src/lib/video_content.cc:219
+#: src/lib/video_content.cc:222
 msgid "Content to be joined must have the same crop."
 msgstr "Aby se spojil obsah, musí mít stejné nastavení  ořezu."
 
-#: src/lib/video_content.cc:223
+#: src/lib/video_content.cc:226
 msgid "Content to be joined must have the same custom ratio setting."
 msgstr ""
 "Obsah, který má být spojen, musí mít stejné nastavení vlastního poměru."
 
-#: src/lib/video_content.cc:227
+#: src/lib/video_content.cc:230
 msgid "Content to be joined must have the same custom size setting."
 msgstr ""
 "Obsah, který má být spojen, musí mít stejné vlastní nastavení velikosti."
 
-#: src/lib/video_content.cc:235
+#: src/lib/video_content.cc:238
 msgid "Content to be joined must have the same fades."
 msgstr "Aby se spojil obsah, musí mít stejné nastavení  zeslabení."
 
-#: src/lib/text_content.cc:288
+#: src/lib/text_content.cc:303
 msgid "Content to be joined must have the same outline width."
 msgstr "Připojený obsah musí mít stejnou šířku obrysu."
 
-#: src/lib/video_content.cc:211
+#: src/lib/video_content.cc:214
 msgid "Content to be joined must have the same picture size."
 msgstr "Aby se spojil obsah, musí mít stejné nastavení velikosti obrazu."
 
-#: src/lib/text_content.cc:264
+#: src/lib/text_content.cc:279
 msgid "Content to be joined must have the same subtitle X offset."
 msgstr "Aby se spojil obsah, musí mít stejné nastavení titulků X offset."
 
-#: src/lib/text_content.cc:272
+#: src/lib/text_content.cc:287
 msgid "Content to be joined must have the same subtitle X scale."
 msgstr "Aby se spojil obsah, musí mít stejné nastavení titulky X měřítko."
 
-#: src/lib/text_content.cc:268
+#: src/lib/text_content.cc:283
 msgid "Content to be joined must have the same subtitle Y offset."
 msgstr "Aby se spojil obsah, musí mít stejné nastavení  titulkový Y offset."
 
-#: src/lib/text_content.cc:276
+#: src/lib/text_content.cc:291
 msgid "Content to be joined must have the same subtitle Y scale."
 msgstr "Aby se spojil obsah, musí mít stejné nastavení titulků Y měřítko."
 
-#: src/lib/text_content.cc:284
+#: src/lib/text_content.cc:299
 msgid "Content to be joined must have the same subtitle fades."
 msgstr "Veškerý obsah ke sloučení musí mít stejné zeslabení titulků."
 
-#: src/lib/text_content.cc:280
+#: src/lib/text_content.cc:295
 msgid "Content to be joined must have the same subtitle line spacing."
 msgstr "Veškerý obsah ke sloučení musí mít stejné mezery mezi řádky titulků."
 
@@ -616,15 +623,15 @@ msgstr "Veškerý obsah ke sloučení musí mít stejné mezery mezi řádky tit
 msgid "Content to be joined must have the same video frame rate"
 msgstr "Veškerý obsah ke sloučení musí mít stejnou snímkovou rychlost"
 
-#: src/lib/video_content.cc:215
+#: src/lib/video_content.cc:218
 msgid "Content to be joined must have the same video frame type."
 msgstr "Aby se spojil obsah, musí mít stejné nastavení typu videa."
 
-#: src/lib/text_content.cc:297
+#: src/lib/text_content.cc:312
 msgid "Content to be joined must use the same DCP track."
 msgstr "Aby se spojil obsah, musí používat stejnou DCP stopu ."
 
-#: src/lib/text_content.cc:293 src/lib/text_content.cc:313
+#: src/lib/text_content.cc:308 src/lib/text_content.cc:328
 msgid "Content to be joined must use the same fonts."
 msgstr "Aby se spojil obsah, musí mít stejné nastavení písma."
 
@@ -632,12 +639,12 @@ msgstr "Aby se spojil obsah, musí mít stejné nastavení písma."
 msgid "Content to be joined must use the same subtitle stream."
 msgstr "Aby se spojil obsah, musí mít stejné nastavení titulkového streamu."
 
-#: src/lib/text_content.cc:301
+#: src/lib/text_content.cc:316
 msgid "Content to be joined must use the same text language."
 msgstr ""
 "Obsah, ke kterému se chcete připojit, musí používat stejný jazyk textu."
 
-#: src/lib/video_content.cc:430
+#: src/lib/video_content.cc:438
 msgid "Content video is %1x%2"
 msgstr "Video je %1x%2"
 
@@ -661,7 +668,7 @@ msgstr "Nemohu se připojit k serveru %1 (%2)"
 msgid "Could not create remote directory %1 (%2)"
 msgstr "Nemohu vytvořit vzdálený adresář %1 (%2)"
 
-#: src/lib/image_examiner.cc:65
+#: src/lib/image_examiner.cc:64
 msgid "Could not decode JPEG2000 file %1 (%2)"
 msgstr "Nemohu dekódovat JPEG2000 soubor %1 (%2)"
 
@@ -697,7 +704,7 @@ msgstr "Nemohu otevřít stažený ZIP soubor (%1:%2: %3)"
 msgid "Could not open file for writing"
 msgstr "Nemohu otevřít soubor pro zápis"
 
-#: src/lib/ffmpeg_file_encoder.cc:269
+#: src/lib/ffmpeg_file_encoder.cc:265
 msgid "Could not open output file %1 (%2)"
 msgstr "Nelze otevřít výstupní soubor% 1 (% 2)"
 
@@ -713,19 +720,19 @@ msgstr "Nemohu začít přenos"
 msgid "Could not write to remote file (%1)"
 msgstr "Nemohu zapisovat do vzdáleného souboru (%1)"
 
-#: src/lib/util.cc:569
+#: src/lib/util.cc:572
 msgid "D-BOX primary"
 msgstr "D-BOX primární"
 
-#: src/lib/util.cc:570
+#: src/lib/util.cc:573
 msgid "D-BOX secondary"
 msgstr "D-BOX sekundární"
 
-#: src/lib/util.cc:600
+#: src/lib/util.cc:603
 msgid "DBP"
 msgstr "DBP"
 
-#: src/lib/util.cc:601
+#: src/lib/util.cc:604
 msgid "DBS"
 msgstr "DBS"
 
@@ -737,7 +744,7 @@ msgstr "DCI Flat"
 msgid "DCI Scope"
 msgstr "DCI Scope"
 
-#: src/lib/dcp_subtitle_content.cc:103
+#: src/lib/dcp_subtitle_content.cc:104
 msgid "DCP XML subtitles"
 msgstr "DCP XML titulky"
 
@@ -762,7 +769,7 @@ msgstr ""
 "DCP-o-matic nemohl otevřít soubor %1 (%2).  Možná, že soubor neexistuje nebo "
 "je v  nepodporovaném formátu."
 
-#: src/lib/film.cc:1565
+#: src/lib/film.cc:1614
 msgid ""
 "DCP-o-matic had to change your settings for referring to DCPs as OV.  Please "
 "review those settings to make sure they are what you want."
@@ -770,7 +777,7 @@ msgstr ""
 "DCP-o-matic musel změnit vaše nastavení pro odkazování na DCPs jako OV.  "
 "Zkontrolujte prosím tato nastavení a ujistěte se, že je to to co chcete."
 
-#: src/lib/film.cc:1533
+#: src/lib/film.cc:1582
 msgid ""
 "DCP-o-matic had to change your settings so that the film's frame rate is the "
 "same as that of your Atmos content."
@@ -783,7 +790,7 @@ msgid ""
 "DCP-o-matic no longer supports the `%1' filter, so it has been turned off."
 msgstr "DCP-o-matic nepodporuje `%1' filter, takže filter bude vypnutý."
 
-#: src/lib/config.cc:359 src/lib/config.cc:1114
+#: src/lib/config.cc:357 src/lib/config.cc:1114
 msgid "DCP-o-matic notification"
 msgstr "DCP-o-matic oznámení"
 
@@ -874,7 +881,7 @@ msgstr "Chyba v souboru titulků: viděný %1 a byl očekávaný %2"
 msgid "Error: %1"
 msgstr "Chyba: %1"
 
-#: src/lib/hints.cc:408
+#: src/lib/hints.cc:405
 msgid "Examining audio, subtitles and closed captions"
 msgstr "Zkoumání zvuku, titulků a skrytých titulků"
 
@@ -886,7 +893,7 @@ msgstr "Zkoumání obsahu"
 msgid "Examining subtitles"
 msgstr "Zkoumání titulků"
 
-#: src/lib/hints.cc:406
+#: src/lib/hints.cc:403
 msgid "Examining subtitles and closed captions"
 msgstr "Zkoumání titulků a skrytých titulků"
 
@@ -914,7 +921,7 @@ msgstr "Odeslání e-mailu se nezdařilo"
 msgid "Feature"
 msgstr "Feature"
 
-#: src/lib/content.cc:464
+#: src/lib/content.cc:468
 msgid "Filename"
 msgstr "Jméno souboru"
 
@@ -926,11 +933,11 @@ msgstr "Film"
 msgid "Finding length"
 msgstr "Zjištění délky"
 
-#: src/lib/content.cc:471
+#: src/lib/content.cc:475
 msgid "Frame rate"
 msgstr "Snímková frekvence"
 
-#: src/lib/util.cc:943
+#: src/lib/util.cc:946
 msgid "Friday"
 msgstr "Pátek"
 
@@ -974,11 +981,11 @@ msgstr "Gamma 28 (BT470BG)"
 msgid "Gradient debander"
 msgstr "Gradient debander"
 
-#: src/lib/util.cc:594
+#: src/lib/util.cc:597
 msgid "HI"
 msgstr "HI"
 
-#: src/lib/util.cc:563
+#: src/lib/util.cc:566
 msgid "Hearing impaired"
 msgstr "Sluchově postižený(í)"
 
@@ -1002,11 +1009,11 @@ msgstr "IEC61966-2-1 (sRGB nebo sYCC)"
 msgid "IEC61966-2-4"
 msgstr "IEC61966-2-4"
 
-#: src/lib/hints.cc:188
+#: src/lib/hints.cc:185
 msgid "If you do use 25fps you should change your DCP standard to SMPTE."
 msgstr "Používáte-li 25fps, měli byste změnit váš standard DCP na SMPTE."
 
-#: src/lib/hints.cc:251
+#: src/lib/hints.cc:248
 msgid ""
 "In general it is now advisable to make SMPTE DCPs unless you have a "
 "particular reason to use Interop.  You are advised to set your DCP to use "
@@ -1016,7 +1023,7 @@ msgstr ""
 "Interop. Na kartě „DCP“ se doporučuje nastavit DCP tak, aby používalo "
 "standard SMPTE."
 
-#: src/lib/hints.cc:573
+#: src/lib/hints.cc:570
 msgid ""
 "It is advisable to put your first subtitle at least 4 seconds after the "
 "start of the DCP to make sure it is seen."
@@ -1032,7 +1039,7 @@ msgstr "Nevím, co zapříčinilo tuto chybu."
 msgid "JEDEC P22"
 msgstr "JEDEC P22"
 
-#: src/lib/config.cc:349 src/lib/config.cc:1099
+#: src/lib/config.cc:347 src/lib/config.cc:1099
 msgid "KDM delivery: $CPL_NAME"
 msgstr "KDM doručení: $CPL_NAME"
 
@@ -1040,39 +1047,39 @@ msgstr "KDM doručení: $CPL_NAME"
 msgid "Kernel deinterlacer"
 msgstr "Kernel deinterlacer"
 
-#: src/lib/ffmpeg_encoder.cc:251 src/lib/util.cc:588
+#: src/lib/ffmpeg_encoder.cc:253 src/lib/util.cc:591
 msgid "L"
 msgstr "L"
 
-#: src/lib/util.cc:596
+#: src/lib/util.cc:599
 msgid "Lc"
 msgstr "Lc"
 
-#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:557
+#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:560
 msgid "Left"
 msgstr "Left (Levý)"
 
-#: src/lib/util.cc:565
+#: src/lib/util.cc:568
 msgid "Left centre"
 msgstr "Left centre (Levý střed)"
 
-#: src/lib/util.cc:567
+#: src/lib/util.cc:570
 msgid "Left rear surround"
 msgstr "Left rear surround (Levý zadní surround)"
 
-#: src/lib/util.cc:561
+#: src/lib/util.cc:564
 msgid "Left surround"
 msgstr "Left surround (Levý surround)"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "Length"
 msgstr "Délka"
 
-#: src/lib/util.cc:591
+#: src/lib/util.cc:594
 msgid "Lfe"
 msgstr "Lfe"
 
-#: src/lib/util.cc:560
+#: src/lib/util.cc:563
 msgid "Lfe (sub)"
 msgstr "Lfe (Subwoofer)"
 
@@ -1096,11 +1103,11 @@ msgstr "Logarmitmický (rozsah 100:1)"
 msgid "Logarithmic (316:1 range)"
 msgstr "Logarmitmický (rozsah 316:1 )"
 
-#: src/lib/exceptions.cc:145
+#: src/lib/exceptions.cc:152
 msgid "Lost communication between main and writer processes"
 msgstr "Ztráta komunikace mezi hlavními a zapisovanými procesy"
 
-#: src/lib/util.cc:592
+#: src/lib/util.cc:595
 msgid "Ls"
 msgstr "Ls"
 
@@ -1112,19 +1119,19 @@ msgstr "Mid-side dekodér"
 msgid "Misc"
 msgstr "Různé"
 
-#: src/lib/dcp_examiner.cc:164
+#: src/lib/dcp_examiner.cc:175
 msgid "Mismatched audio channel counts in DCP"
 msgstr "Počet zvukových kanálů se v DCP neschoduje"
 
-#: src/lib/dcp_examiner.cc:170
+#: src/lib/dcp_examiner.cc:181
 msgid "Mismatched audio sample rates in DCP"
 msgstr "Vzorkovací kmitočet zvuku v DCP neschoduje"
 
-#: src/lib/dcp_examiner.cc:137
+#: src/lib/dcp_examiner.cc:145
 msgid "Mismatched frame rates in DCP"
 msgstr "V DPC se neschoduje počet obrázků za sekundu"
 
-#: src/lib/dcp_examiner.cc:145
+#: src/lib/dcp_examiner.cc:153
 msgid "Mismatched video sizes in DCP"
 msgstr "V DCP se neshoduje velikost videa"
 
@@ -1132,11 +1139,11 @@ msgstr "V DCP se neshoduje velikost videa"
 msgid "Missing required setting %1"
 msgstr "Chybí potřebná nastavení %1"
 
-#: src/lib/util.cc:935
+#: src/lib/util.cc:938
 msgid "Monday"
 msgstr "Pondělí"
 
-#: src/lib/writer.cc:763
+#: src/lib/writer.cc:759
 msgid "Mono"
 msgstr "Mono"
 
@@ -1160,7 +1167,7 @@ msgstr "Ve složce nebyly nalezeny žádné platné soubory."
 msgid "Noise reduction"
 msgstr "Redukce hluku"
 
-#: src/lib/writer.cc:731 src/lib/writer.cc:738 src/lib/writer.cc:761
+#: src/lib/writer.cc:727 src/lib/writer.cc:734 src/lib/writer.cc:757
 msgid "None"
 msgstr "Žádný"
 
@@ -1197,7 +1204,7 @@ msgstr "Overcomplete wavelet denoiser"
 msgid "P3"
 msgstr "P3"
 
-#: src/lib/util.h:59
+#: src/lib/util.h:64
 msgid ""
 "Please report this problem by using Help -> Report a problem or via email to "
 "carl@dcpomatic.com"
@@ -1209,7 +1216,7 @@ msgstr ""
 msgid "Policy"
 msgstr "Policy"
 
-#: src/lib/content.cc:480
+#: src/lib/content.cc:484
 msgid "Prepared for video frame rate"
 msgstr "Příprava pro snímkovou frekvenci videa"
 
@@ -1225,7 +1232,7 @@ msgstr "Promo"
 msgid "Public Service Announcement"
 msgstr "Public Service Announcement (Veřejné oznámení služby)"
 
-#: src/lib/ffmpeg_encoder.cc:256 src/lib/util.cc:589
+#: src/lib/ffmpeg_encoder.cc:258 src/lib/util.cc:592
 msgid "R"
 msgstr "R"
 
@@ -1237,7 +1244,7 @@ msgstr "RGB / sRGB (IEC61966-2-1)"
 msgid "Rating"
 msgstr "Přístupnost"
 
-#: src/lib/util.cc:597
+#: src/lib/util.cc:600
 msgid "Rc"
 msgstr "Rc"
 
@@ -1257,19 +1264,19 @@ msgstr "Rec. 601 (SD)"
 msgid "Rec. 709"
 msgstr "Rec. 709 (HD)"
 
-#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:558
+#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:561
 msgid "Right"
 msgstr "Right (Pravý)"
 
-#: src/lib/util.cc:566
+#: src/lib/util.cc:569
 msgid "Right centre"
 msgstr "Right centre (Pravý střed)"
 
-#: src/lib/util.cc:568
+#: src/lib/util.cc:571
 msgid "Right rear surround"
 msgstr "Right rear surround (Pravý zadní surround)"
 
-#: src/lib/util.cc:562
+#: src/lib/util.cc:565
 msgid "Right surround"
 msgstr "Right surround (Pravý surround)"
 
@@ -1281,7 +1288,7 @@ msgstr "Otočit o 90 stupňů proti směru hodinových ručiček"
 msgid "Rotate 90 degrees clockwise"
 msgstr "Otočit o 90 stupňů po směru hodinových ručiček"
 
-#: src/lib/util.cc:593
+#: src/lib/util.cc:596
 msgid "Rs"
 msgstr "Rs"
 
@@ -1306,7 +1313,7 @@ msgstr "SMPTE 2085, Y'D'zD'x"
 msgid "SMPTE 240M"
 msgstr "SMPTE 240M"
 
-#: src/lib/hints.cc:615
+#: src/lib/hints.cc:612
 msgid ""
 "SMPTE DCPs with the type FTR (feature) should have markers for the first "
 "frame of end credits (FFEC) and the first frame of moving credits (FFMC).  "
@@ -1345,7 +1352,7 @@ msgstr "SSH chyba [%1]"
 msgid "SSH error [%1] (%2)"
 msgstr "SSH chyba [%1] (%2)"
 
-#: src/lib/util.cc:945
+#: src/lib/util.cc:948
 msgid "Saturday"
 msgstr "Sobota"
 
@@ -1361,11 +1368,11 @@ msgstr "Posílám email"
 msgid "Short"
 msgstr "Short (Krátky film)"
 
-#: src/lib/util.cc:602
+#: src/lib/util.cc:605
 msgid "Sign"
 msgstr ""
 
-#: src/lib/video_content.cc:500
+#: src/lib/video_content.cc:510
 msgid "Size"
 msgstr "Velikost"
 
@@ -1392,7 +1399,7 @@ msgstr ""
 "Some files have been changed since they were added to the project.  Open the "
 "project in DCP-o-matic, check the settings, then save it before trying again."
 
-#: src/lib/hints.cc:554
+#: src/lib/hints.cc:551
 msgid ""
 "Some of your closed captions span more than %1 lines, so they will be "
 "truncated."
@@ -1400,22 +1407,22 @@ msgstr ""
 "Některé ze skrytých titulků jsou rozloženy na více než %1 řádcích, takže "
 "budou zkráceny."
 
-#: src/lib/hints.cc:653
+#: src/lib/hints.cc:650
 msgid ""
 "Some of your content has audio but you have not set the audio language.  It "
 "is advisable to set the audio language in the \"DCP\" tab unless your audio "
 "has no spoken parts."
 msgstr ""
 
-#: src/lib/film.cc:406
+#: src/lib/film.cc:417
 msgid "Some of your content needs a KDM"
 msgstr "Část vašeho obsahu potřebuje KDM"
 
-#: src/lib/film.cc:409
+#: src/lib/film.cc:420
 msgid "Some of your content needs an OV"
 msgstr "Část vašeho obsahu potřebuje OV"
 
-#: src/lib/writer.cc:765
+#: src/lib/writer.cc:761
 msgid "Stereo"
 msgstr "Stereo"
 
@@ -1427,7 +1434,7 @@ msgstr "Stereo na 5.1 up-mixer A"
 msgid "Stereo to 5.1 up-mixer B"
 msgstr "Stereo na  5.1 up-mixer B"
 
-#: src/lib/util.cc:933
+#: src/lib/util.cc:936
 msgid "Sunday"
 msgstr "Neděle"
 
@@ -1447,7 +1454,7 @@ msgstr "Test"
 msgid "Text subtitles"
 msgstr "Text titulků"
 
-#: src/lib/film.cc:389
+#: src/lib/film.cc:400
 msgid "The DCP is empty, perhaps because all the content has zero length."
 msgstr "DCP je prázdný, možná proto, že veškerý obsah má nulovou délku."
 
@@ -1459,7 +1466,7 @@ msgstr "Řetěz certifikátů pro podepisování je neplatný"
 msgid "The certificate chain for signing is invalid (%1)"
 msgstr "Řetěz certifikátů pro podepisování je neplatný (%1)"
 
-#: src/lib/video_decoder.cc:86
+#: src/lib/video_decoder.cc:81
 msgid ""
 "The content file %1 is set as 3D but does not appear to contain 3D images.  "
 "Please set it to 2D.  You can still make a 3D DCP from this content by "
@@ -1493,7 +1500,7 @@ msgstr "Soubor %1 byl oříznut o %2 milisekund méně."
 msgid "The file %1 has been trimmed by %2 milliseconds more."
 msgstr "Soubor %1 byl oříznut o %2 milisekund více."
 
-#: src/lib/hints.cc:241
+#: src/lib/hints.cc:238
 msgid ""
 "There is a large difference between the frame rate of your DCP and that of "
 "some of your content.  This will cause your audio to play back at a much "
@@ -1507,7 +1514,7 @@ msgstr ""
 "tak, aby se přiblížila vašemu obsahu za předpokladu, že vaše cílové "
 "projekční systémy podporují zvolenou rychlost DCP."
 
-#: src/lib/dcp_content.cc:657
+#: src/lib/dcp_content.cc:659
 msgid "There is no video in this DCP"
 msgstr "V tomto DCP není video"
 
@@ -1520,11 +1527,11 @@ msgstr ""
 "Zbývá málo paměti. Pokud je váš systém 32-bitový, zkuste snížit počet "
 "enkódovacích threadov v záložce Všeobecné, v nastavení."
 
-#: src/lib/util.cc:1146
+#: src/lib/util.cc:1150
 msgid "This KDM was made for DCP-o-matic but not for its leaf certificate."
 msgstr "KDM byl vytvořen pro DCP-o-matic, ale ne pro jeho koncový certifikát."
 
-#: src/lib/util.cc:1144
+#: src/lib/util.cc:1148
 msgid "This KDM was not made for DCP-o-matic's decryption certificate."
 msgstr "Tento KDM nebyl vyroben pro dešifrovací certifikát DCP-o-matic."
 
@@ -1558,7 +1565,7 @@ msgstr ""
 "Tento soubor je KDM. KDM by měly být přidány do obsahu DCP klepnutím pravým "
 "tlačítkem myši na obsah a výběrem možnosti “Přidat KDM”."
 
-#: src/lib/film.cc:581
+#: src/lib/film.cc:595
 msgid ""
 "This film was created with a newer version of DCP-o-matic, and it cannot be "
 "loaded into this version.  Sorry!"
@@ -1566,7 +1573,7 @@ msgstr ""
 "Tento film byl vytvořený novější verzí DCP-o-matic, a nemůže být načtený "
 "touto verzí. Omlouváme se !"
 
-#: src/lib/film.cc:566
+#: src/lib/film.cc:580
 msgid ""
 "This film was created with an older version of DCP-o-matic, and "
 "unfortunately it cannot be loaded into this version.  You will need to "
@@ -1576,7 +1583,7 @@ msgstr ""
 "načtený do do této verze. Budete muset vytvořit nový Film, znovu přidat váš "
 "obsah a znovu provést nastavení. Omlouváme se!"
 
-#: src/lib/util.cc:941
+#: src/lib/util.cc:944
 msgid "Thursday"
 msgstr "Čtvrtek"
 
@@ -1596,7 +1603,7 @@ msgstr "Překódování %1"
 msgid "Transitional"
 msgstr "Transitional (Přechod)"
 
-#: src/lib/util.cc:937
+#: src/lib/util.cc:940
 msgid "Tuesday"
 msgstr "Úterý"
 
@@ -1620,7 +1627,7 @@ msgstr "Neznámé"
 msgid "Unknown error"
 msgstr "Neznáma chyba"
 
-#: src/lib/ffmpeg_decoder.cc:343
+#: src/lib/ffmpeg_decoder.cc:339
 msgid "Unrecognised audio sample format (%1)"
 msgstr "Nerozpoznaná vzorkovací frekvence audia (%1)"
 
@@ -1640,7 +1647,7 @@ msgstr "Nespecifikované"
 msgid "Untitled"
 msgstr "Nepojmenované"
 
-#: src/lib/util.cc:571 src/lib/util.cc:572
+#: src/lib/util.cc:574 src/lib/util.cc:575
 msgid "Unused"
 msgstr "Nepoužité"
 
@@ -1652,7 +1659,7 @@ msgstr "Upmix L"
 msgid "Upmix R"
 msgstr "Upmix R"
 
-#: src/lib/util.cc:595
+#: src/lib/util.cc:598
 msgid "VI"
 msgstr "VI"
 
@@ -1664,7 +1671,7 @@ msgstr "Ověřit DCP"
 msgid "Vertical flip"
 msgstr "Vertikální flip"
 
-#: src/lib/util.cc:564
+#: src/lib/util.cc:567
 msgid "Visually impaired"
 msgstr "Zrakově postižený(í)"
 
@@ -1676,7 +1683,7 @@ msgstr "Čekám"
 msgid "Weave filter"
 msgstr "Filtr vazby"
 
-#: src/lib/util.cc:939
+#: src/lib/util.cc:942
 msgid "Wednesday"
 msgstr "Středa"
 
@@ -1688,7 +1695,7 @@ msgstr "YCOCG"
 msgid "Yet Another Deinterlacing Filter"
 msgstr "Ještě další deinterlacing filter"
 
-#: src/lib/hints.cc:201
+#: src/lib/hints.cc:198
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You are advised to change the DCP frame rate "
@@ -1698,7 +1705,7 @@ msgstr ""
 "není podporována všemi projektory.  Doporučujeme změnit snímkovou frekvenci "
 "DCP na %2 fps."
 
-#: src/lib/hints.cc:185
+#: src/lib/hints.cc:182
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You may want to consider changing your frame "
@@ -1708,7 +1715,7 @@ msgstr ""
 "není podporována všemi projektory.  Možná budete chtít změnit snímkovou "
 "frekvenci na %2 fps."
 
-#: src/lib/hints.cc:195
+#: src/lib/hints.cc:192
 msgid ""
 "You are set up for a DCP frame rate of 30fps, which is not supported by all "
 "projectors.  Be aware that you may have compatibility problems."
@@ -1716,7 +1723,7 @@ msgstr ""
 "Nastavili jste pro DCP snímkovou frekvenci na 30fps, která není podporována "
 "všemi projektory.  Mějte na paměti, že můžete mít potíže s kompatibilitou."
 
-#: src/lib/hints.cc:306
+#: src/lib/hints.cc:303
 msgid ""
 "You are using 3D content but your DCP is set to 2D.  Set the DCP to 3D if "
 "you want to play it back on a 3D system (e.g. Real-D, MasterImage etc.)"
@@ -1724,7 +1731,7 @@ msgstr ""
 "Používáte 3D obsah, ale váš DCP je nastaven na 2D. Nastavte DCP na 3D, pokud "
 "chcete přehrávat ve 3D systému (např. Real-D, MasterImage atd.)"
 
-#: src/lib/hints.cc:122
+#: src/lib/hints.cc:119
 msgid ""
 "You are using DCP-o-matic's stereo-to-5.1 upmixer.  This is experimental and "
 "may result in poor-quality audio.  If you continue, you should listen to the "
@@ -1734,7 +1741,7 @@ msgstr ""
 "mít za následek špatnou kvalitu zvuku. Pokud budete pokračovat, měli byste "
 "poslouchat výsledný DCP v kině, abyste se ujistili, že to zní dobře."
 
-#: src/lib/hints.cc:290
+#: src/lib/hints.cc:287
 msgid ""
 "You have %1 files that look like they are VOB files from DVD. You should "
 "join them to ensure smooth joins between the files."
@@ -1742,7 +1749,7 @@ msgstr ""
 "Máte %1 souborů, které vypadají jako VOB soubory z DVD. Měli byste je "
 "spojit, aby zajistit tak hladké spojení mezi těmito dvěma soubory."
 
-#: src/lib/film.cc:1529
+#: src/lib/film.cc:1578
 msgid ""
 "You have more than one piece of Atmos content, and they do not have the same "
 "frame rate.  You must remove some Atmos content."
@@ -1750,7 +1757,7 @@ msgstr ""
 "Máte více než jednu část obsahu Atmos která nemá stejnou snímkovou "
 "frekvenci. Musíte odstranit nějaký obsah Atmos."
 
-#: src/lib/hints.cc:561
+#: src/lib/hints.cc:558
 msgid ""
 "You have overlapping closed captions, which are not allowed in Interop "
 "DCPs.  Change your DCP standard to SMPTE."
@@ -1758,7 +1765,7 @@ msgstr ""
 "Máte překrývající se skryté titulky, které nejsou povoleny v Interop DCPs.  "
 "Změňte standard DCP na SMPTE."
 
-#: src/lib/hints.cc:274
+#: src/lib/hints.cc:271
 msgid ""
 "You have specified a font file which is larger than 640kB.  This is very "
 "likely to cause problems on playback."
@@ -1766,11 +1773,11 @@ msgstr ""
 "Zadali jste soubor písma, který je větší než 640kB. Pravděpodobně to může "
 "způsobit problémy při přehrávání."
 
-#: src/lib/film.cc:385
+#: src/lib/film.cc:396
 msgid "You must add some content to the DCP before creating it"
 msgstr "Musíte přidat obsah do DCP před tím než ho vytvoříte"
 
-#: src/lib/hints.cc:112
+#: src/lib/hints.cc:109
 msgid ""
 "Your DCP has fewer than 6 audio channels.  This may cause problems on some "
 "projectors.  You may want to set the DCP to have 6 channels.  It does not "
@@ -1781,7 +1788,7 @@ msgstr ""
 "projektorech.  Možná budete chtít nastavit DCP na 6 kanálů..  Nezáleží na "
 "tom, zda má váš obsah méně kanálů, protože DCP-o-matic naplní doplňky tichem."
 
-#: src/lib/hints.cc:160
+#: src/lib/hints.cc:157
 #, fuzzy
 msgid ""
 "Your DCP uses an unusual container ratio.  This may cause problems on some "
@@ -1790,14 +1797,14 @@ msgstr ""
 "Váš DCP používá neobvyklý poměr. To může způsobit na některých projektorech "
 "problémy. Pokud je to možné použijte Flat nebo Scope pro poměr kontejneru DCP"
 
-#: src/lib/hints.cc:340
+#: src/lib/hints.cc:337
 msgid ""
 "Your audio level is very high (on %1).  You should reduce the gain of your "
 "audio content."
 msgstr ""
 "Hlasitost zvuku je velmi vysoká (na %1). Snižte zesílení zvukového obsahu."
 
-#: src/lib/config.cc:289
+#: src/lib/config.cc:287
 msgid ""
 "Your default container is not valid and has been changed to Flat (1.85:1)"
 msgstr "Výchozí kontejner není platný a byl změněn na Flat (1,85: 1)"
@@ -1823,7 +1830,7 @@ msgstr "[přesouvám obrázky]"
 msgid "[still]"
 msgstr "[stále]"
 
-#: src/lib/dcp_subtitle_content.cc:97 src/lib/string_text_file_content.cc:78
+#: src/lib/dcp_subtitle_content.cc:98 src/lib/string_text_file_content.cc:78
 msgid "[subtitles]"
 msgstr "[titulky]"
 
@@ -1841,11 +1848,11 @@ msgstr "spojení vypršelo"
 msgid "connecting"
 msgstr "připojuji"
 
-#: src/lib/film.cc:381
+#: src/lib/film.cc:392
 msgid "container"
 msgstr "kontejner"
 
-#: src/lib/film.cc:393
+#: src/lib/film.cc:404
 msgid "content type"
 msgstr "typ obsahu"
 
@@ -1897,37 +1904,37 @@ msgstr "chyba při async_read (%1)"
 msgid "error during async_write (%1)"
 msgstr "chyba při async_write (%1)"
 
-#: src/lib/content.cc:473 src/lib/content.cc:482
+#: src/lib/content.cc:477 src/lib/content.cc:486
 msgid "frames per second"
 msgstr "snímky za sekundu"
 
 #. / TRANSLATORS: h here is an abbreviation for hours
-#: src/lib/util.cc:200
+#: src/lib/util.cc:203
 msgid "h"
 msgstr "h"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:750
+#: src/lib/dcp_content.cc:752
 msgid "it does not have closed captions in all its reels."
 msgstr "nemá skryté titulky ve všech reelech."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:739
+#: src/lib/dcp_content.cc:741
 msgid "it does not have open subtitles in all its reels."
 msgstr "nemá otevřené titulky ve všech reelech."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:706
+#: src/lib/dcp_content.cc:708
 msgid "it does not have sound in all its reels."
 msgstr "nemá zvuk ve všech reelech."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:610
+#: src/lib/dcp_content.cc:612
 msgid "it has a different frame rate to the film."
 msgstr "má jinou snímkovou frekvenci za sekundu pro film."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:765
+#: src/lib/dcp_content.cc:767
 msgid ""
 "it has a start trim so its subtitles or closed captions must be re-written."
 msgstr ""
@@ -1935,42 +1942,42 @@ msgstr ""
 "titulky."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:667
+#: src/lib/dcp_content.cc:669
 msgid "it is 2K and the film is 4K."
 msgstr "je 2K a film je 4K."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:664
+#: src/lib/dcp_content.cc:666
 msgid "it is 4K and the film is 2K."
 msgstr "je 4K a film je 2K."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:598
+#: src/lib/dcp_content.cc:600
 msgid "it is Interop and the film is set to SMPTE."
 msgstr "to je Interop a film je nastaven na SMPTE."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:602
+#: src/lib/dcp_content.cc:604
 msgid "it is SMPTE and the film is set to Interop."
 msgstr "to je SMPTE a film je Interop."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:712
+#: src/lib/dcp_content.cc:714
 msgid "it overlaps other audio content; remove the other content."
 msgstr "překrývá jiný zvukový obsah; odstranit jiný obsah."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:770
+#: src/lib/dcp_content.cc:772
 msgid "it overlaps other text content; remove the other content."
 msgstr "překrývá se s jiným textovým obsahem; odeberte další obsah."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:677
+#: src/lib/dcp_content.cc:679
 msgid "it overlaps other video content; remove the other content."
 msgstr "překrývá se s jiným videoobsahem; odstranit jiný obsah."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:633
+#: src/lib/dcp_content.cc:635
 msgid ""
 "its reel lengths differ from those in the film; set the reel mode to 'split "
 "by video content'."
@@ -1979,12 +1986,12 @@ msgstr ""
 "obsahu videa’."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:672
+#: src/lib/dcp_content.cc:674
 msgid "its video frame size differs from the film's."
 msgstr "velikost video rámečku se liší od filmu."
 
 #. / TRANSLATORS: m here is an abbreviation for minutes
-#: src/lib/util.cc:209
+#: src/lib/util.cc:212
 msgid "m"
 msgstr "m"
 
@@ -1992,12 +1999,12 @@ msgstr "m"
 msgid "moving"
 msgstr "přesouvám"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "name"
 msgstr "jméno"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:756
+#: src/lib/dcp_content.cc:758
 #, fuzzy
 msgid ""
 "one of its closed caption has a non-zero entry point so it must be re-"
@@ -2007,7 +2014,7 @@ msgstr ""
 "přepsán."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:743
+#: src/lib/dcp_content.cc:745
 #, fuzzy
 msgid ""
 "one of its subtitle reels has a non-zero entry point so it must be re-"
@@ -2017,7 +2024,7 @@ msgstr ""
 "přepsán."
 
 #. / TRANSLATORS: s here is an abbreviation for seconds
-#: src/lib/util.cc:219
+#: src/lib/util.cc:222
 msgid "s"
 msgstr "s"
 
@@ -2025,7 +2032,7 @@ msgstr "s"
 msgid "sRGB"
 msgstr "sRGB"
 
-#: src/lib/film.cc:402
+#: src/lib/film.cc:413
 msgid "some of your content is missing"
 msgstr "část obsahu chybí"
 
@@ -2037,7 +2044,7 @@ msgstr "stále"
 msgid "unknown"
 msgstr "neznáme"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "video frames"
 msgstr "video snímky"
 
diff --git a/src/lib/po/da_DK.po b/src/lib/po/da_DK.po
index cfc3364f3..5a8576fd8 100644
--- a/src/lib/po/da_DK.po
+++ b/src/lib/po/da_DK.po
@@ -6,7 +6,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-08-20 23:10+0200\n"
+"POT-Creation-Date: 2021-10-17 15:26+0200\n"
 "PO-Revision-Date: 2019-04-06 12:29+0200\n"
 "Last-Translator: FULL NAME &lt;EMAIL@ADDRESS&gt;\n"
 "Language-Team: LANGUAGE &lt;LL@li.org&gt;\n"
@@ -17,7 +17,7 @@ msgstr ""
 "X-Generator: Poedit 2.1.1\n"
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
 
-#: src/lib/video_content.cc:486
+#: src/lib/video_content.cc:496
 #, c-format
 msgid ""
 "\n"
@@ -26,7 +26,7 @@ msgstr ""
 "\n"
 "Indholds billedhastighed %.4f\n"
 
-#: src/lib/video_content.cc:451
+#: src/lib/video_content.cc:461
 msgid ""
 "\n"
 "Cropped to %1x%2"
@@ -34,7 +34,7 @@ msgstr ""
 "\n"
 "Beskåret til %1x%2"
 
-#: src/lib/video_content.cc:444
+#: src/lib/video_content.cc:452
 #, c-format
 msgid ""
 "\n"
@@ -43,7 +43,7 @@ msgstr ""
 "\n"
 "Skærmformat %.2f:1"
 
-#: src/lib/video_content.cc:474
+#: src/lib/video_content.cc:484
 msgid ""
 "\n"
 "Padded with black to fit container %1 (%2x%3)"
@@ -51,7 +51,7 @@ msgstr ""
 "\n"
 "Udfyldt med sort for at tilpasse til container %1 (%2x%3)"
 
-#: src/lib/video_content.cc:464
+#: src/lib/video_content.cc:474
 msgid ""
 "\n"
 "Scaled to %1x%2"
@@ -59,7 +59,7 @@ msgstr ""
 "\n"
 "Skaleret til %1x%2"
 
-#: src/lib/video_content.cc:468 src/lib/video_content.cc:479
+#: src/lib/video_content.cc:478 src/lib/video_content.cc:489
 #, c-format
 msgid " (%.2f:1)"
 msgstr " (%.2f:1)"
@@ -104,7 +104,7 @@ msgstr ""
 msgid "%1 [Atmos]"
 msgstr "%1 [Atmos]"
 
-#: src/lib/dcp_content.cc:318
+#: src/lib/dcp_content.cc:320
 msgid "%1 [DCP]"
 msgstr "%1 [DCP]"
 
@@ -120,7 +120,7 @@ msgstr "%1 [film]"
 msgid "%1 [video]"
 msgstr "%1 [video]"
 
-#: src/lib/video_content.cc:439
+#: src/lib/video_content.cc:447
 #, c-format
 msgid ", pixel aspect ratio %.2f:1"
 msgstr ", pixel format %.2f:1"
@@ -169,7 +169,7 @@ msgstr "2.39 (Scope)"
 msgid "3D denoiser"
 msgstr "3D-denoiser"
 
-#: src/lib/hints.cc:212
+#: src/lib/hints.cc:209
 msgid ""
 "4K 3D is only supported by a very limited number of projectors.  Unless you "
 "know that you will play this DCP back on a capable projector, it is "
@@ -201,7 +201,7 @@ msgid ""
 "Paypal to donate €10</a></ul><p>Thank you!"
 msgstr ""
 
-#: src/lib/hints.cc:169
+#: src/lib/hints.cc:166
 msgid ""
 "A few projectors have problems playing back very high bit-rate DCPs.  It is "
 "a good idea to drop the JPEG2000 bandwidth down to about 200Mbit/s; this is "
@@ -211,6 +211,13 @@ msgstr ""
 "bithastighed. Det vil være en god ide at sætte JPEG2000 båndbredden ned til "
 "ca. 200Mbit/s - det bør ikke have nogen synlig effekt på billedet."
 
+#: src/lib/text_content.cc:248
+msgid ""
+"A subtitle or closed caption file in this project is marked with the "
+"language '%1', which DCP-o-matic does not recognise.  The file's language "
+"has been cleared."
+msgstr ""
+
 #: src/lib/ffmpeg_content.cc:635
 msgid "ARIB STD-B67 ('Hybrid log-gamma')"
 msgstr "ARIB STD-B67 ('Hybrid log-gamma')"
@@ -219,7 +226,7 @@ msgstr "ARIB STD-B67 ('Hybrid log-gamma')"
 msgid "Advertisement"
 msgstr "Reklamer (ADV)"
 
-#: src/lib/hints.cc:146
+#: src/lib/hints.cc:143
 msgid ""
 "All of your content is in Scope (2.39:1) but your DCP's container is Flat "
 "(1.85:1).  This will letter-box your content inside a Flat (1.85:1) frame.  "
@@ -231,7 +238,7 @@ msgstr ""
 "billede. Du vil måske foretrække at sætte din DCP's container til Scope "
 "(2.39:1) i fanen \"DCP\"."
 
-#: src/lib/hints.cc:150
+#: src/lib/hints.cc:147
 #, fuzzy
 msgid ""
 "All of your content narrower than 1.90:1 but your DCP's container is Scope "
@@ -256,54 +263,54 @@ msgstr "Analyserer lyd"
 msgid "Analysing subtitles"
 msgstr "Undersøger undertekster"
 
-#: src/lib/hints.cc:368
+#: src/lib/hints.cc:365
 msgid ""
 "At least one marker comes after the end of the project and will be ignored."
 msgstr ""
 
-#: src/lib/hints.cc:473
+#: src/lib/hints.cc:470
 msgid "At least one of your closed caption files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:466
+#: src/lib/hints.cc:463
 msgid "At least one of your closed caption files' XML part is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:481
+#: src/lib/hints.cc:478
 msgid "At least one of your subtitle files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:445
+#: src/lib/hints.cc:442
 msgid ""
 "At least one of your subtitle lines has more than 52 characters.  It is "
 "recommended to make each line 52 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:447
+#: src/lib/hints.cc:444
 msgid ""
 "At least one of your subtitle lines has more than 79 characters.  You should "
 "make each line 79 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:590
+#: src/lib/hints.cc:587
 msgid ""
 "At least one of your subtitles has more than 3 lines.  It is advisable to "
 "use no more than 3 lines."
 msgstr ""
 
-#: src/lib/hints.cc:580
+#: src/lib/hints.cc:577
 msgid ""
 "At least one of your subtitles lasts less than 15 frames.  It is advisable "
 "to make each subtitle at least 15 frames long."
 msgstr ""
 
-#: src/lib/hints.cc:585
+#: src/lib/hints.cc:582
 msgid ""
 "At least one of your subtitles starts less than 2 frames after the previous "
 "one.  It is advisable to make the gap between subtitles at least 2 frames."
 msgstr ""
 
-#: src/lib/hints.cc:633
+#: src/lib/hints.cc:630
 msgid ""
 "At least one piece of subtitle or closed caption content has no specified "
 "language.  It is advisable to set the language for each piece of subtitle or "
@@ -377,15 +384,15 @@ msgstr "Bits per pixel"
 msgid "Bob Weaver Deinterlacing Filter"
 msgstr "Endnu et Deinterlacing Filter"
 
-#: src/lib/util.cc:598
+#: src/lib/util.cc:601
 msgid "BsL"
 msgstr "BsV"
 
-#: src/lib/util.cc:599
+#: src/lib/util.cc:602
 msgid "BsR"
 msgstr "BsH"
 
-#: src/lib/util.cc:590
+#: src/lib/util.cc:593
 msgid "C"
 msgstr "C"
 
@@ -393,7 +400,7 @@ msgstr "C"
 msgid "Cancelled"
 msgstr "Annulleret"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "Cannot contain slashes"
 msgstr "Må ikke indeholde skråstreger"
 
@@ -401,11 +408,11 @@ msgstr "Må ikke indeholde skråstreger"
 msgid "Cannot handle pixel format %1 during %2"
 msgstr "Kan ikke håndtere pixelformat %1 under %2"
 
-#: src/lib/film.cc:1662
+#: src/lib/film.cc:1711
 msgid "Cannot make a KDM as this project is not encrypted."
 msgstr "Kan ikke generere en KDM da projektet ikke er krypteret."
 
-#: src/lib/util.cc:559
+#: src/lib/util.cc:562
 msgid "Centre"
 msgstr "Center"
 
@@ -473,7 +480,7 @@ msgstr ""
 msgid "Computing digest"
 msgstr "Beregner resume"
 
-#: src/lib/writer.cc:535
+#: src/lib/writer.cc:531
 msgid "Computing digests"
 msgstr "Beregner resumeer"
 
@@ -506,25 +513,25 @@ msgstr ""
 "Elementer der skal splejses skal enten alle have billede eller slet ikke "
 "have billede"
 
-#: src/lib/text_content.cc:305
+#: src/lib/text_content.cc:320
 #, fuzzy
 msgid ""
 "Content to be joined must both be main subtitle languages or both additional."
 msgstr ""
 "Indhold der skal splejses skal have samme linjeafstand på undertekster."
 
-#: src/lib/video_content.cc:207
+#: src/lib/video_content.cc:210
 #, fuzzy
 msgid "Content to be joined must have all its video used or not used."
 msgstr "Indhold der skal splejses skal have samme billedhastighed"
 
-#: src/lib/text_content.cc:260
+#: src/lib/text_content.cc:275
 msgid "Content to be joined must have the same 'burn subtitles' setting."
 msgstr ""
 "Indhold der skal splejses skal have samme indstilling af 'Brænd undertekster "
 "ind i billedet'."
 
-#: src/lib/text_content.cc:256
+#: src/lib/text_content.cc:271
 msgid "Content to be joined must have the same 'use subtitles' setting."
 msgstr ""
 "Indhold der skal splejses skal have den samme indstilling af 'brug "
@@ -538,64 +545,64 @@ msgstr "Indhold der skal splejses skal have samme lydforsinkelse."
 msgid "Content to be joined must have the same audio gain."
 msgstr "Indhold der skal splejses skal have samme lydgain."
 
-#: src/lib/video_content.cc:239
+#: src/lib/video_content.cc:242
 #, fuzzy
 msgid "Content to be joined must have the same burnt subtitle language."
 msgstr ""
 "Indhold der skal splejses skal have samme indstilling af 'Brænd undertekster "
 "ind i billedet'."
 
-#: src/lib/video_content.cc:231
+#: src/lib/video_content.cc:234
 msgid "Content to be joined must have the same colour conversion."
 msgstr "Indhold der skal splejses skal have samme farvekonvertering."
 
-#: src/lib/video_content.cc:219
+#: src/lib/video_content.cc:222
 msgid "Content to be joined must have the same crop."
 msgstr "Indhold der skal splejses skal have samme beskæring."
 
-#: src/lib/video_content.cc:223
+#: src/lib/video_content.cc:226
 #, fuzzy
 msgid "Content to be joined must have the same custom ratio setting."
 msgstr "Indhold der skal splejses skal have samme skaleringsindstilling."
 
-#: src/lib/video_content.cc:227
+#: src/lib/video_content.cc:230
 #, fuzzy
 msgid "Content to be joined must have the same custom size setting."
 msgstr "Indhold der skal splejses skal have samme skaleringsindstilling."
 
-#: src/lib/video_content.cc:235
+#: src/lib/video_content.cc:238
 msgid "Content to be joined must have the same fades."
 msgstr "Indhold der skal splejses skal fade på samme måde."
 
-#: src/lib/text_content.cc:288
+#: src/lib/text_content.cc:303
 msgid "Content to be joined must have the same outline width."
 msgstr "Indhold der skal splejses skal have samme breddeindramning."
 
-#: src/lib/video_content.cc:211
+#: src/lib/video_content.cc:214
 msgid "Content to be joined must have the same picture size."
 msgstr "Indhold der skal splejses skal have samme billedstørrelse."
 
-#: src/lib/text_content.cc:264
+#: src/lib/text_content.cc:279
 msgid "Content to be joined must have the same subtitle X offset."
 msgstr "Indhold der skal splejses skal have samme X offset for undertekst."
 
-#: src/lib/text_content.cc:272
+#: src/lib/text_content.cc:287
 msgid "Content to be joined must have the same subtitle X scale."
 msgstr "Indhold der skal splejses skal have samme X skalering af undertekst."
 
-#: src/lib/text_content.cc:268
+#: src/lib/text_content.cc:283
 msgid "Content to be joined must have the same subtitle Y offset."
 msgstr "Indhold der skal splejses skal have samme Y offset for undertekst."
 
-#: src/lib/text_content.cc:276
+#: src/lib/text_content.cc:291
 msgid "Content to be joined must have the same subtitle Y scale."
 msgstr "Indhold der skal splejses skal have samme Y skalering af undertekst."
 
-#: src/lib/text_content.cc:284
+#: src/lib/text_content.cc:299
 msgid "Content to be joined must have the same subtitle fades."
 msgstr "Indhold der skal splejses skal have samme udtoning af undertekster."
 
-#: src/lib/text_content.cc:280
+#: src/lib/text_content.cc:295
 msgid "Content to be joined must have the same subtitle line spacing."
 msgstr ""
 "Indhold der skal splejses skal have samme linjeafstand på undertekster."
@@ -604,15 +611,15 @@ msgstr ""
 msgid "Content to be joined must have the same video frame rate"
 msgstr "Indhold der skal splejses skal have samme billedhastighed"
 
-#: src/lib/video_content.cc:215
+#: src/lib/video_content.cc:218
 msgid "Content to be joined must have the same video frame type."
 msgstr "Indhold der skal splejses skal have samme billedtype."
 
-#: src/lib/text_content.cc:297
+#: src/lib/text_content.cc:312
 msgid "Content to be joined must use the same DCP track."
 msgstr "Indhold der skal splejses skal bruge det samme DCP-spor."
 
-#: src/lib/text_content.cc:293 src/lib/text_content.cc:313
+#: src/lib/text_content.cc:308 src/lib/text_content.cc:328
 msgid "Content to be joined must use the same fonts."
 msgstr "Indhold der skal splejses skal bruge samme skrifttype."
 
@@ -620,12 +627,12 @@ msgstr "Indhold der skal splejses skal bruge samme skrifttype."
 msgid "Content to be joined must use the same subtitle stream."
 msgstr "Indhold der skal splejses skal bruge samme tekstningsstrøm."
 
-#: src/lib/text_content.cc:301
+#: src/lib/text_content.cc:316
 #, fuzzy
 msgid "Content to be joined must use the same text language."
 msgstr "Indhold der skal splejses skal bruge samme skrifttype."
 
-#: src/lib/video_content.cc:430
+#: src/lib/video_content.cc:438
 msgid "Content video is %1x%2"
 msgstr "Indholdsvideo er %1x%2"
 
@@ -650,7 +657,7 @@ msgstr "Kunne ikke få forbindelse til server %1 (%2)"
 msgid "Could not create remote directory %1 (%2)"
 msgstr "Kunne ikke danne fjernkatalog %1 (%2)"
 
-#: src/lib/image_examiner.cc:65
+#: src/lib/image_examiner.cc:64
 msgid "Could not decode JPEG2000 file %1 (%2)"
 msgstr "Kunne ikke læse JPEG2000 fil %1 (%2)"
 
@@ -686,7 +693,7 @@ msgstr "Den hentede ZIP-fil (%1:%2: %3) kunne ikke åbnes."
 msgid "Could not open file for writing"
 msgstr "Kunne ikke åbne fil til skrivning"
 
-#: src/lib/ffmpeg_file_encoder.cc:269
+#: src/lib/ffmpeg_file_encoder.cc:265
 #, fuzzy
 msgid "Could not open output file %1 (%2)"
 msgstr "kunne ikke skrive til fil %1 (%2)"
@@ -703,19 +710,19 @@ msgstr "Kunne ikke starte overførsel"
 msgid "Could not write to remote file (%1)"
 msgstr "Kunne ikke skrive til fjernfil. (%1)"
 
-#: src/lib/util.cc:569
+#: src/lib/util.cc:572
 msgid "D-BOX primary"
 msgstr "primær D-BOX"
 
-#: src/lib/util.cc:570
+#: src/lib/util.cc:573
 msgid "D-BOX secondary"
 msgstr "sekundær D-BOX"
 
-#: src/lib/util.cc:600
+#: src/lib/util.cc:603
 msgid "DBP"
 msgstr "DBP"
 
-#: src/lib/util.cc:601
+#: src/lib/util.cc:604
 msgid "DBS"
 msgstr "DBS"
 
@@ -727,7 +734,7 @@ msgstr "DCI Flat"
 msgid "DCI Scope"
 msgstr "DCI Scope"
 
-#: src/lib/dcp_subtitle_content.cc:103
+#: src/lib/dcp_subtitle_content.cc:104
 msgid "DCP XML subtitles"
 msgstr "DCP XML undertekster"
 
@@ -752,7 +759,7 @@ msgstr ""
 "DCP-o-matic kunne ikke åbne filen %1 (%2). Måske findes den ikke, eller den "
 "er i et uventet format."
 
-#: src/lib/film.cc:1565
+#: src/lib/film.cc:1614
 msgid ""
 "DCP-o-matic had to change your settings for referring to DCPs as OV.  Please "
 "review those settings to make sure they are what you want."
@@ -761,7 +768,7 @@ msgstr ""
 "DCPer som OV.  Gennemse venligst indstillingerne for at sikre at de er som "
 "ønsket."
 
-#: src/lib/film.cc:1533
+#: src/lib/film.cc:1582
 #, fuzzy
 msgid ""
 "DCP-o-matic had to change your settings so that the film's frame rate is the "
@@ -778,7 +785,7 @@ msgstr ""
 "DCP-o-matic understøtter ikke længere `%1'-filteret, så det er blevet slået "
 "fra."
 
-#: src/lib/config.cc:359 src/lib/config.cc:1114
+#: src/lib/config.cc:357 src/lib/config.cc:1114
 msgid "DCP-o-matic notification"
 msgstr "DCP-o-matic besked"
 
@@ -872,7 +879,7 @@ msgstr "Fejl i fil med undertekster: så %1 men forventede %2"
 msgid "Error: %1"
 msgstr "Fejl: %1"
 
-#: src/lib/hints.cc:408
+#: src/lib/hints.cc:405
 #, fuzzy
 msgid "Examining audio, subtitles and closed captions"
 msgstr "Undersøger billedtekster"
@@ -885,7 +892,7 @@ msgstr "Undersøger indhold"
 msgid "Examining subtitles"
 msgstr "Undersøger undertekster"
 
-#: src/lib/hints.cc:406
+#: src/lib/hints.cc:403
 #, fuzzy
 msgid "Examining subtitles and closed captions"
 msgstr "Undersøger billedtekster"
@@ -916,7 +923,7 @@ msgstr "Afsendelse af e-mail mislykkedes"
 msgid "Feature"
 msgstr "Feature"
 
-#: src/lib/content.cc:464
+#: src/lib/content.cc:468
 msgid "Filename"
 msgstr "Filnavn"
 
@@ -928,11 +935,11 @@ msgstr "Film"
 msgid "Finding length"
 msgstr "Beregner længde"
 
-#: src/lib/content.cc:471
+#: src/lib/content.cc:475
 msgid "Frame rate"
 msgstr "Billedhastighed"
 
-#: src/lib/util.cc:943
+#: src/lib/util.cc:946
 msgid "Friday"
 msgstr "Fredag"
 
@@ -976,11 +983,11 @@ msgstr "Gamma 28 (BT470BG)"
 msgid "Gradient debander"
 msgstr "Gradient debander"
 
-#: src/lib/util.cc:594
+#: src/lib/util.cc:597
 msgid "HI"
 msgstr "HH"
 
-#: src/lib/util.cc:563
+#: src/lib/util.cc:566
 msgid "Hearing impaired"
 msgstr "Hørehæmmede"
 
@@ -1004,18 +1011,18 @@ msgstr "IEC61966-2-1 (sRGB eller sYCC)"
 msgid "IEC61966-2-4"
 msgstr "IEC61966-2-4"
 
-#: src/lib/hints.cc:188
+#: src/lib/hints.cc:185
 msgid "If you do use 25fps you should change your DCP standard to SMPTE."
 msgstr "Når du benytter 25bps bør du ændre DCP standard til SMPTE."
 
-#: src/lib/hints.cc:251
+#: src/lib/hints.cc:248
 msgid ""
 "In general it is now advisable to make SMPTE DCPs unless you have a "
 "particular reason to use Interop.  You are advised to set your DCP to use "
 "the SMPTE standard in the \"DCP\" tab."
 msgstr ""
 
-#: src/lib/hints.cc:573
+#: src/lib/hints.cc:570
 msgid ""
 "It is advisable to put your first subtitle at least 4 seconds after the "
 "start of the DCP to make sure it is seen."
@@ -1029,7 +1036,7 @@ msgstr "Det er uklart hvad der forårsagede denne fejl."
 msgid "JEDEC P22"
 msgstr "JEDEC P22"
 
-#: src/lib/config.cc:349 src/lib/config.cc:1099
+#: src/lib/config.cc:347 src/lib/config.cc:1099
 msgid "KDM delivery: $CPL_NAME"
 msgstr "KDM-levering: $CPL_NAME"
 
@@ -1037,39 +1044,39 @@ msgstr "KDM-levering: $CPL_NAME"
 msgid "Kernel deinterlacer"
 msgstr "Kerne sammenfletter"
 
-#: src/lib/ffmpeg_encoder.cc:251 src/lib/util.cc:588
+#: src/lib/ffmpeg_encoder.cc:253 src/lib/util.cc:591
 msgid "L"
 msgstr "L"
 
-#: src/lib/util.cc:596
+#: src/lib/util.cc:599
 msgid "Lc"
 msgstr "Lc"
 
-#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:557
+#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:560
 msgid "Left"
 msgstr "Venstre"
 
-#: src/lib/util.cc:565
+#: src/lib/util.cc:568
 msgid "Left centre"
 msgstr "Venstre center"
 
-#: src/lib/util.cc:567
+#: src/lib/util.cc:570
 msgid "Left rear surround"
 msgstr "Venstre bag surround"
 
-#: src/lib/util.cc:561
+#: src/lib/util.cc:564
 msgid "Left surround"
 msgstr "Venstre surround"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "Length"
 msgstr "Længde"
 
-#: src/lib/util.cc:591
+#: src/lib/util.cc:594
 msgid "Lfe"
 msgstr "Lfe"
 
-#: src/lib/util.cc:560
+#: src/lib/util.cc:563
 msgid "Lfe (sub)"
 msgstr "Lfe (sub)"
 
@@ -1093,11 +1100,11 @@ msgstr "Logaritmisk (100:1 range)"
 msgid "Logarithmic (316:1 range)"
 msgstr "Logaritmisk  (316:1 range)"
 
-#: src/lib/exceptions.cc:145
+#: src/lib/exceptions.cc:152
 msgid "Lost communication between main and writer processes"
 msgstr ""
 
-#: src/lib/util.cc:592
+#: src/lib/util.cc:595
 msgid "Ls"
 msgstr "Ls"
 
@@ -1109,19 +1116,19 @@ msgstr "Mid-side dekoder"
 msgid "Misc"
 msgstr "Diverse"
 
-#: src/lib/dcp_examiner.cc:164
+#: src/lib/dcp_examiner.cc:175
 msgid "Mismatched audio channel counts in DCP"
 msgstr "Antallet af lydkanaler passer ikke i DCP"
 
-#: src/lib/dcp_examiner.cc:170
+#: src/lib/dcp_examiner.cc:181
 msgid "Mismatched audio sample rates in DCP"
 msgstr "Uoverensstemmelse mellem lydsamplingshastigheder i DCP"
 
-#: src/lib/dcp_examiner.cc:137
+#: src/lib/dcp_examiner.cc:145
 msgid "Mismatched frame rates in DCP"
 msgstr "Billedhastigheder passer ikke i DCP"
 
-#: src/lib/dcp_examiner.cc:145
+#: src/lib/dcp_examiner.cc:153
 msgid "Mismatched video sizes in DCP"
 msgstr "Videostørrelser passer ikke i DCP"
 
@@ -1129,11 +1136,11 @@ msgstr "Videostørrelser passer ikke i DCP"
 msgid "Missing required setting %1"
 msgstr "Mangler påkrævet indstilling %1"
 
-#: src/lib/util.cc:935
+#: src/lib/util.cc:938
 msgid "Monday"
 msgstr "Mandag"
 
-#: src/lib/writer.cc:763
+#: src/lib/writer.cc:759
 msgid "Mono"
 msgstr "Mono"
 
@@ -1157,7 +1164,7 @@ msgstr "Ingen korrekte billedfiler kunne findes i folderen."
 msgid "Noise reduction"
 msgstr "Støjreduktion"
 
-#: src/lib/writer.cc:731 src/lib/writer.cc:738 src/lib/writer.cc:761
+#: src/lib/writer.cc:727 src/lib/writer.cc:734 src/lib/writer.cc:757
 msgid "None"
 msgstr "Ingen"
 
@@ -1194,7 +1201,7 @@ msgstr "Overcomplete wavelet denoiser"
 msgid "P3"
 msgstr "P3"
 
-#: src/lib/util.h:59
+#: src/lib/util.h:64
 msgid ""
 "Please report this problem by using Help -> Report a problem or via email to "
 "carl@dcpomatic.com"
@@ -1206,7 +1213,7 @@ msgstr ""
 msgid "Policy"
 msgstr "Metode (Policy)"
 
-#: src/lib/content.cc:480
+#: src/lib/content.cc:484
 msgid "Prepared for video frame rate"
 msgstr "Forberedt til video billedhastighed"
 
@@ -1222,7 +1229,7 @@ msgstr ""
 msgid "Public Service Announcement"
 msgstr "Publikumsorientering (PSA)"
 
-#: src/lib/ffmpeg_encoder.cc:256 src/lib/util.cc:589
+#: src/lib/ffmpeg_encoder.cc:258 src/lib/util.cc:592
 msgid "R"
 msgstr "R"
 
@@ -1234,7 +1241,7 @@ msgstr "RGB / sRGB (IEC61966-2-1)"
 msgid "Rating"
 msgstr "Censur"
 
-#: src/lib/util.cc:597
+#: src/lib/util.cc:600
 msgid "Rc"
 msgstr "Rc"
 
@@ -1254,19 +1261,19 @@ msgstr "Rec. 601"
 msgid "Rec. 709"
 msgstr "Rec. 709"
 
-#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:558
+#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:561
 msgid "Right"
 msgstr "Højre"
 
-#: src/lib/util.cc:566
+#: src/lib/util.cc:569
 msgid "Right centre"
 msgstr "Højre center"
 
-#: src/lib/util.cc:568
+#: src/lib/util.cc:571
 msgid "Right rear surround"
 msgstr "Højre bag surround"
 
-#: src/lib/util.cc:562
+#: src/lib/util.cc:565
 msgid "Right surround"
 msgstr "Højre surround"
 
@@ -1278,7 +1285,7 @@ msgstr "Roter 90 grader mod uret"
 msgid "Rotate 90 degrees clockwise"
 msgstr "Roter 90 grader med uret"
 
-#: src/lib/util.cc:593
+#: src/lib/util.cc:596
 msgid "Rs"
 msgstr "Rs"
 
@@ -1303,7 +1310,7 @@ msgstr "SMPTE 2085, Y'D'zD'x"
 msgid "SMPTE 240M"
 msgstr "SMPTE 240M"
 
-#: src/lib/hints.cc:615
+#: src/lib/hints.cc:612
 msgid ""
 "SMPTE DCPs with the type FTR (feature) should have markers for the first "
 "frame of end credits (FFEC) and the first frame of moving credits (FFMC).  "
@@ -1341,7 +1348,7 @@ msgstr "SSH-fejl (%1)"
 msgid "SSH error [%1] (%2)"
 msgstr "SSH-fejl (%1)"
 
-#: src/lib/util.cc:945
+#: src/lib/util.cc:948
 msgid "Saturday"
 msgstr "Lørdag"
 
@@ -1357,11 +1364,11 @@ msgstr "Sender email"
 msgid "Short"
 msgstr "Short"
 
-#: src/lib/util.cc:602
+#: src/lib/util.cc:605
 msgid "Sign"
 msgstr ""
 
-#: src/lib/video_content.cc:500
+#: src/lib/video_content.cc:510
 msgid "Size"
 msgstr "Størrelse"
 
@@ -1391,29 +1398,29 @@ msgstr ""
 "De bliver nu undersøgt igen, og det kan være nødvendigt at gennemse deres "
 "indstillinger bagefter."
 
-#: src/lib/hints.cc:554
+#: src/lib/hints.cc:551
 msgid ""
 "Some of your closed captions span more than %1 lines, so they will be "
 "truncated."
 msgstr ""
 "Nogle af underteksterne er på mere end %1 linjer, så de bliver beskåret."
 
-#: src/lib/hints.cc:653
+#: src/lib/hints.cc:650
 msgid ""
 "Some of your content has audio but you have not set the audio language.  It "
 "is advisable to set the audio language in the \"DCP\" tab unless your audio "
 "has no spoken parts."
 msgstr ""
 
-#: src/lib/film.cc:406
+#: src/lib/film.cc:417
 msgid "Some of your content needs a KDM"
 msgstr "Noget af dit indhold mangler en KDM"
 
-#: src/lib/film.cc:409
+#: src/lib/film.cc:420
 msgid "Some of your content needs an OV"
 msgstr "Noget af dit indhold mangler en OV"
 
-#: src/lib/writer.cc:765
+#: src/lib/writer.cc:761
 msgid "Stereo"
 msgstr "Stereo"
 
@@ -1425,7 +1432,7 @@ msgstr "Stereo til 5.1 up-mixer A"
 msgid "Stereo to 5.1 up-mixer B"
 msgstr "Stereo til 5.1 up-mixer B"
 
-#: src/lib/util.cc:933
+#: src/lib/util.cc:936
 msgid "Sunday"
 msgstr "Søndag"
 
@@ -1445,7 +1452,7 @@ msgstr "Test"
 msgid "Text subtitles"
 msgstr "Teks"
 
-#: src/lib/film.cc:389
+#: src/lib/film.cc:400
 msgid "The DCP is empty, perhaps because all the content has zero length."
 msgstr ""
 
@@ -1457,7 +1464,7 @@ msgstr "Certifikatkæden til signering er ugyldig"
 msgid "The certificate chain for signing is invalid (%1)"
 msgstr "Certifikatkæden til signering er ugyldig (%1)"
 
-#: src/lib/video_decoder.cc:86
+#: src/lib/video_decoder.cc:81
 msgid ""
 "The content file %1 is set as 3D but does not appear to contain 3D images.  "
 "Please set it to 2D.  You can still make a 3D DCP from this content by "
@@ -1488,7 +1495,7 @@ msgstr "Filen %1 er blevet trimmet %2 millisekunder kortere."
 msgid "The file %1 has been trimmed by %2 milliseconds more."
 msgstr "Filen %1 er blevet trimmet %2 millisekunder længere."
 
-#: src/lib/hints.cc:241
+#: src/lib/hints.cc:238
 msgid ""
 "There is a large difference between the frame rate of your DCP and that of "
 "some of your content.  This will cause your audio to play back at a much "
@@ -1502,7 +1509,7 @@ msgstr ""
 "indholdet, sålænge det er en billedhastighed der understøttes af det system "
 "DCPen skal afspilles fra."
 
-#: src/lib/dcp_content.cc:657
+#: src/lib/dcp_content.cc:659
 msgid "There is no video in this DCP"
 msgstr "Der er ingen video i denne DCP"
 
@@ -1516,13 +1523,13 @@ msgstr ""
 "kører på et 32 bit operativsystem, så prøv at reducere antallet af "
 "genereringstråde i fanebladet Generelt i Indstillinger."
 
-#: src/lib/util.cc:1146
+#: src/lib/util.cc:1150
 #, fuzzy
 msgid "This KDM was made for DCP-o-matic but not for its leaf certificate."
 msgstr ""
 "KDM var genereret til DCP-o-matic, men ikke til dens 'leaf' certifikat."
 
-#: src/lib/util.cc:1144
+#: src/lib/util.cc:1148
 #, fuzzy
 msgid "This KDM was not made for DCP-o-matic's decryption certificate."
 msgstr "KDM var ikke genereret til DCP-o-matics dekrypterings certifikat."
@@ -1550,7 +1557,7 @@ msgstr ""
 "Denne fil er en KDM. KDMer skal tilføjes til DCP indhold ved at højreklikke "
 "på indholdet og vælge \"Tilføj KDM\"."
 
-#: src/lib/film.cc:581
+#: src/lib/film.cc:595
 msgid ""
 "This film was created with a newer version of DCP-o-matic, and it cannot be "
 "loaded into this version.  Sorry!"
@@ -1558,7 +1565,7 @@ msgstr ""
 "Denne film blev dannet med en nyere version af DCP-o-matic og kan ikke "
 "indlæses i denne version. Beklager!"
 
-#: src/lib/film.cc:566
+#: src/lib/film.cc:580
 msgid ""
 "This film was created with an older version of DCP-o-matic, and "
 "unfortunately it cannot be loaded into this version.  You will need to "
@@ -1568,7 +1575,7 @@ msgstr ""
 "indlæses i denne version. Du er nødt til at lave en ny Film, tilføje dit "
 "indhold og konfigurere det igen. Beklager!"
 
-#: src/lib/util.cc:941
+#: src/lib/util.cc:944
 msgid "Thursday"
 msgstr "Torsdag"
 
@@ -1588,7 +1595,7 @@ msgstr "Transcoder %1"
 msgid "Transitional"
 msgstr "Transitional"
 
-#: src/lib/util.cc:937
+#: src/lib/util.cc:940
 msgid "Tuesday"
 msgstr "Tirsdag"
 
@@ -1613,7 +1620,7 @@ msgstr "ukendt"
 msgid "Unknown error"
 msgstr "Ukendt fejl"
 
-#: src/lib/ffmpeg_decoder.cc:343
+#: src/lib/ffmpeg_decoder.cc:339
 msgid "Unrecognised audio sample format (%1)"
 msgstr "Kunne ikke genkende lydsekvensens format (%1)"
 
@@ -1633,7 +1640,7 @@ msgstr "Uspecificeret"
 msgid "Untitled"
 msgstr "Uden titel"
 
-#: src/lib/util.cc:571 src/lib/util.cc:572
+#: src/lib/util.cc:574 src/lib/util.cc:575
 msgid "Unused"
 msgstr "Ubenyttet"
 
@@ -1645,7 +1652,7 @@ msgstr "Upmix L"
 msgid "Upmix R"
 msgstr "Upmix R"
 
-#: src/lib/util.cc:595
+#: src/lib/util.cc:598
 msgid "VI"
 msgstr "VI"
 
@@ -1657,7 +1664,7 @@ msgstr "Verificer DCP"
 msgid "Vertical flip"
 msgstr "Lodret spejling"
 
-#: src/lib/util.cc:564
+#: src/lib/util.cc:567
 msgid "Visually impaired"
 msgstr "Synshandicappet"
 
@@ -1669,7 +1676,7 @@ msgstr "Venter"
 msgid "Weave filter"
 msgstr "Weavefilter"
 
-#: src/lib/util.cc:939
+#: src/lib/util.cc:942
 msgid "Wednesday"
 msgstr "Onsdag"
 
@@ -1681,7 +1688,7 @@ msgstr "YCOCG"
 msgid "Yet Another Deinterlacing Filter"
 msgstr "Endnu et Deinterlacing Filter"
 
-#: src/lib/hints.cc:201
+#: src/lib/hints.cc:198
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You are advised to change the DCP frame rate "
@@ -1691,7 +1698,7 @@ msgstr ""
 "billedhastighed understøttes ikke af alle projektorer.  Du rådes til at "
 "ændre DCP-billedhastigheden til %2 fps."
 
-#: src/lib/hints.cc:185
+#: src/lib/hints.cc:182
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You may want to consider changing your frame "
@@ -1701,7 +1708,7 @@ msgstr ""
 "billedhastighed understøttes ikke af alle projektorer.  Du rådes til at "
 "ændre billedhastigheden til %2 fps."
 
-#: src/lib/hints.cc:195
+#: src/lib/hints.cc:192
 msgid ""
 "You are set up for a DCP frame rate of 30fps, which is not supported by all "
 "projectors.  Be aware that you may have compatibility problems."
@@ -1710,7 +1717,7 @@ msgstr ""
 "understøttes af alle projektorer.  Vær opmærksom på at der kan opstå "
 "kompatibilitetsproblemer."
 
-#: src/lib/hints.cc:306
+#: src/lib/hints.cc:303
 msgid ""
 "You are using 3D content but your DCP is set to 2D.  Set the DCP to 3D if "
 "you want to play it back on a 3D system (e.g. Real-D, MasterImage etc.)"
@@ -1718,7 +1725,7 @@ msgstr ""
 "Du benytter 3D indhold, men har sat DCPen til 2D. Sæt DCPen til 3D hvis du "
 "vil afspille på et 3D-system. (f.eks. Real-D, MasterImage, etc.)"
 
-#: src/lib/hints.cc:122
+#: src/lib/hints.cc:119
 msgid ""
 "You are using DCP-o-matic's stereo-to-5.1 upmixer.  This is experimental and "
 "may result in poor-quality audio.  If you continue, you should listen to the "
@@ -1729,7 +1736,7 @@ msgstr ""
 "du fortsætter, bør du lytte til DCPen i en biograf for at sikre dig at "
 "lydkvaliteten er i orden."
 
-#: src/lib/hints.cc:290
+#: src/lib/hints.cc:287
 msgid ""
 "You have %1 files that look like they are VOB files from DVD. You should "
 "join them to ensure smooth joins between the files."
@@ -1737,20 +1744,20 @@ msgstr ""
 "Du har %1 filer der ligner VOB-filer fra en DVD. Du bør samle dem for at "
 "sikre gode overgange mellem filerne."
 
-#: src/lib/film.cc:1529
+#: src/lib/film.cc:1578
 msgid ""
 "You have more than one piece of Atmos content, and they do not have the same "
 "frame rate.  You must remove some Atmos content."
 msgstr ""
 
-#: src/lib/hints.cc:561
+#: src/lib/hints.cc:558
 #, fuzzy
 msgid ""
 "You have overlapping closed captions, which are not allowed in Interop "
 "DCPs.  Change your DCP standard to SMPTE."
 msgstr "Du har overlappende undertekster, hvilket ikke er tilladt."
 
-#: src/lib/hints.cc:274
+#: src/lib/hints.cc:271
 msgid ""
 "You have specified a font file which is larger than 640kB.  This is very "
 "likely to cause problems on playback."
@@ -1758,11 +1765,11 @@ msgstr ""
 "Du har valgt en font-fil der er større end 640 kB. Dette vil højst "
 "sandsynligt give problemer ved afspilningen."
 
-#: src/lib/film.cc:385
+#: src/lib/film.cc:396
 msgid "You must add some content to the DCP before creating it"
 msgstr "Du er nødt til at tilføje indhold til DCP'en før du kan danne den"
 
-#: src/lib/hints.cc:112
+#: src/lib/hints.cc:109
 msgid ""
 "Your DCP has fewer than 6 audio channels.  This may cause problems on some "
 "projectors.  You may want to set the DCP to have 6 channels.  It does not "
@@ -1770,7 +1777,7 @@ msgid ""
 "extras with silence."
 msgstr ""
 
-#: src/lib/hints.cc:160
+#: src/lib/hints.cc:157
 #, fuzzy
 msgid ""
 "Your DCP uses an unusual container ratio.  This may cause problems on some "
@@ -1780,13 +1787,13 @@ msgstr ""
 "projektorer. Brug Flat eller Scope som DCPens indholdsformat, hvis det er "
 "muligt"
 
-#: src/lib/hints.cc:340
+#: src/lib/hints.cc:337
 msgid ""
 "Your audio level is very high (on %1).  You should reduce the gain of your "
 "audio content."
 msgstr "Lydniveauet er meget højt (%1). Du bør sænke gain på lyden."
 
-#: src/lib/config.cc:289
+#: src/lib/config.cc:287
 msgid ""
 "Your default container is not valid and has been changed to Flat (1.85:1)"
 msgstr ""
@@ -1813,7 +1820,7 @@ msgstr "[levende billeder]"
 msgid "[still]"
 msgstr "[stillbillede]"
 
-#: src/lib/dcp_subtitle_content.cc:97 src/lib/string_text_file_content.cc:78
+#: src/lib/dcp_subtitle_content.cc:98 src/lib/string_text_file_content.cc:78
 msgid "[subtitles]"
 msgstr "[undertekster]"
 
@@ -1831,11 +1838,11 @@ msgstr "forbindelsestimeout"
 msgid "connecting"
 msgstr "forbinder"
 
-#: src/lib/film.cc:381
+#: src/lib/film.cc:392
 msgid "container"
 msgstr "container"
 
-#: src/lib/film.cc:393
+#: src/lib/film.cc:404
 msgid "content type"
 msgstr "indholdstype"
 
@@ -1891,78 +1898,78 @@ msgstr "fejl ved async_read (%1)"
 msgid "error during async_write (%1)"
 msgstr "fejl ved async_write (%1)"
 
-#: src/lib/content.cc:473 src/lib/content.cc:482
+#: src/lib/content.cc:477 src/lib/content.cc:486
 msgid "frames per second"
 msgstr "billeder pr. sekund"
 
 #. / TRANSLATORS: h here is an abbreviation for hours
-#: src/lib/util.cc:200
+#: src/lib/util.cc:203
 msgid "h"
 msgstr "t"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:750
+#: src/lib/dcp_content.cc:752
 msgid "it does not have closed captions in all its reels."
 msgstr "den har ikke billedtekster på alle spoler."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:739
+#: src/lib/dcp_content.cc:741
 msgid "it does not have open subtitles in all its reels."
 msgstr "den har ikke undertekster på alle spoler."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:706
+#: src/lib/dcp_content.cc:708
 msgid "it does not have sound in all its reels."
 msgstr "den har ikke lyd på alle spoler."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:610
+#: src/lib/dcp_content.cc:612
 msgid "it has a different frame rate to the film."
 msgstr "den har en anden billedhastighed end filmen."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:765
+#: src/lib/dcp_content.cc:767
 msgid ""
 "it has a start trim so its subtitles or closed captions must be re-written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:667
+#: src/lib/dcp_content.cc:669
 msgid "it is 2K and the film is 4K."
 msgstr "den er 2K og filmen er 4K."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:664
+#: src/lib/dcp_content.cc:666
 msgid "it is 4K and the film is 2K."
 msgstr "den er 4K og filmen er 2K."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:598
+#: src/lib/dcp_content.cc:600
 msgid "it is Interop and the film is set to SMPTE."
 msgstr "den er i Interop formatet og filmen er i SMPTE."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:602
+#: src/lib/dcp_content.cc:604
 msgid "it is SMPTE and the film is set to Interop."
 msgstr "den er i SMPTE formatet og filmen er i Interop."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:712
+#: src/lib/dcp_content.cc:714
 msgid "it overlaps other audio content; remove the other content."
 msgstr "den overlapper med anden lyd; fjern det andet indhold."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:770
+#: src/lib/dcp_content.cc:772
 msgid "it overlaps other text content; remove the other content."
 msgstr "den overlapper med anden tekst; fjern det andet indhold."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:677
+#: src/lib/dcp_content.cc:679
 msgid "it overlaps other video content; remove the other content."
 msgstr "den overlapper med andet video indhold; fjern det andet indhold."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:633
+#: src/lib/dcp_content.cc:635
 msgid ""
 "its reel lengths differ from those in the film; set the reel mode to 'split "
 "by video content'."
@@ -1971,12 +1978,12 @@ msgstr ""
 "til 'opdel efter videoindhold'."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:672
+#: src/lib/dcp_content.cc:674
 msgid "its video frame size differs from the film's."
 msgstr "dens billedstørrelse er forskellig fra filmens."
 
 #. / TRANSLATORS: m here is an abbreviation for minutes
-#: src/lib/util.cc:209
+#: src/lib/util.cc:212
 msgid "m"
 msgstr "m"
 
@@ -1984,26 +1991,26 @@ msgstr "m"
 msgid "moving"
 msgstr "flytter"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "name"
 msgstr "navn"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:756
+#: src/lib/dcp_content.cc:758
 msgid ""
 "one of its closed caption has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:743
+#: src/lib/dcp_content.cc:745
 msgid ""
 "one of its subtitle reels has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: s here is an abbreviation for seconds
-#: src/lib/util.cc:219
+#: src/lib/util.cc:222
 msgid "s"
 msgstr "s"
 
@@ -2011,7 +2018,7 @@ msgstr "s"
 msgid "sRGB"
 msgstr "sRGB"
 
-#: src/lib/film.cc:402
+#: src/lib/film.cc:413
 msgid "some of your content is missing"
 msgstr "noget af dit indhold mangler"
 
@@ -2023,7 +2030,7 @@ msgstr "stille"
 msgid "unknown"
 msgstr "ukendt"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "video frames"
 msgstr "videobilleder"
 
diff --git a/src/lib/po/de_DE.po b/src/lib/po/de_DE.po
index 1a98266d9..0df5b7c9b 100644
--- a/src/lib/po/de_DE.po
+++ b/src/lib/po/de_DE.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-08-20 23:10+0200\n"
+"POT-Creation-Date: 2021-10-17 15:26+0200\n"
 "PO-Revision-Date: 2021-08-20 20:44+0200\n"
 "Last-Translator: Carsten Kurz\n"
 "Language-Team: DCP-o-matic translators\n"
@@ -18,7 +18,7 @@ msgstr ""
 "X-Generator: Poedit 3.0\n"
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
 
-#: src/lib/video_content.cc:486
+#: src/lib/video_content.cc:496
 #, c-format
 msgid ""
 "\n"
@@ -27,7 +27,7 @@ msgstr ""
 "\n"
 "Bildrate %.4f fps\n"
 
-#: src/lib/video_content.cc:451
+#: src/lib/video_content.cc:461
 msgid ""
 "\n"
 "Cropped to %1x%2"
@@ -35,7 +35,7 @@ msgstr ""
 "\n"
 "Beschnitten zu %1x%2"
 
-#: src/lib/video_content.cc:444
+#: src/lib/video_content.cc:452
 #, c-format
 msgid ""
 "\n"
@@ -44,7 +44,7 @@ msgstr ""
 "\n"
 "Anzeigeseitenverhältnis (DAR) %.2f:1"
 
-#: src/lib/video_content.cc:474
+#: src/lib/video_content.cc:484
 msgid ""
 "\n"
 "Padded with black to fit container %1 (%2x%3)"
@@ -52,7 +52,7 @@ msgstr ""
 "\n"
 "Mit Schwarz gefüllt auf Containerformat %1 (%2x%3)"
 
-#: src/lib/video_content.cc:464
+#: src/lib/video_content.cc:474
 msgid ""
 "\n"
 "Scaled to %1x%2"
@@ -60,7 +60,7 @@ msgstr ""
 "\n"
 "Skaliert auf %1x%2"
 
-#: src/lib/video_content.cc:468 src/lib/video_content.cc:479
+#: src/lib/video_content.cc:478 src/lib/video_content.cc:489
 #, c-format
 msgid " (%.2f:1)"
 msgstr " (%.2f:1)"
@@ -106,7 +106,7 @@ msgstr "%1 (%2 GB) [%3]"
 msgid "%1 [Atmos]"
 msgstr "%1 [Atmos]"
 
-#: src/lib/dcp_content.cc:318
+#: src/lib/dcp_content.cc:320
 msgid "%1 [DCP]"
 msgstr "%1 [DCP]"
 
@@ -122,7 +122,7 @@ msgstr "%1 [Film]"
 msgid "%1 [video]"
 msgstr "%1 [Bild]"
 
-#: src/lib/video_content.cc:439
+#: src/lib/video_content.cc:447
 #, c-format
 msgid ", pixel aspect ratio %.2f:1"
 msgstr ", Pixelseitenverhältnis %.2f:1"
@@ -171,7 +171,7 @@ msgstr "2.39:1 (DCI Scope)"
 msgid "3D denoiser"
 msgstr "3D Rauschunterdrückung"
 
-#: src/lib/hints.cc:212
+#: src/lib/hints.cc:209
 msgid ""
 "4K 3D is only supported by a very limited number of projectors.  Unless you "
 "know that you will play this DCP back on a capable projector, it is "
@@ -219,7 +219,7 @@ msgstr ""
 "amount=20\">Spende über Paypal £20</a><li><a href=\"https://dcpomatic.com/"
 "donate_amount?amount=10\">Spende über Paypal £10</a></ul><p>Dankeschön!"
 
-#: src/lib/hints.cc:169
+#: src/lib/hints.cc:166
 msgid ""
 "A few projectors have problems playing back very high bit-rate DCPs.  It is "
 "a good idea to drop the JPEG2000 bandwidth down to about 200Mbit/s; this is "
@@ -230,6 +230,13 @@ msgstr ""
 "nicht wesentlich höher als 230MBit/s einstellen. Dies wird kaum Auswirkungen "
 "auf die sichtbare Bildqualität haben."
 
+#: src/lib/text_content.cc:248
+msgid ""
+"A subtitle or closed caption file in this project is marked with the "
+"language '%1', which DCP-o-matic does not recognise.  The file's language "
+"has been cleared."
+msgstr ""
+
 #: src/lib/ffmpeg_content.cc:635
 msgid "ARIB STD-B67 ('Hybrid log-gamma')"
 msgstr "ARIB STD-B67 ('Hybrid log-gamma')"
@@ -238,7 +245,7 @@ msgstr "ARIB STD-B67 ('Hybrid log-gamma')"
 msgid "Advertisement"
 msgstr "Werbung - ADV"
 
-#: src/lib/hints.cc:146
+#: src/lib/hints.cc:143
 msgid ""
 "All of your content is in Scope (2.39:1) but your DCP's container is Flat "
 "(1.85:1).  This will letter-box your content inside a Flat (1.85:1) frame.  "
@@ -252,7 +259,7 @@ msgstr ""
 "Containertyp auf Scope (2.39:1) einstellen. Für Scope-Trailer ist diese "
 "'letter-boxed' Darstellung in einem Flat-Vorprogramm jedoch übliche Praxis."
 
-#: src/lib/hints.cc:150
+#: src/lib/hints.cc:147
 #, fuzzy
 msgid ""
 "All of your content narrower than 1.90:1 but your DCP's container is Scope "
@@ -277,28 +284,28 @@ msgstr "Audio wird analysiert"
 msgid "Analysing subtitles"
 msgstr "Untertitel analysieren"
 
-#: src/lib/hints.cc:368
+#: src/lib/hints.cc:365
 msgid ""
 "At least one marker comes after the end of the project and will be ignored."
 msgstr ""
 "Mindestens ein Marker ist hinter dem Ende des Projekts platziert und wird "
 "daher ignoriert."
 
-#: src/lib/hints.cc:473
+#: src/lib/hints.cc:470
 msgid "At least one of your closed caption files is larger than "
 msgstr "Mindestens eine Ihrer Closed Captions (CCAP) ist grösser als "
 
-#: src/lib/hints.cc:466
+#: src/lib/hints.cc:463
 msgid "At least one of your closed caption files' XML part is larger than "
 msgstr ""
 "Mindestens eine Ihrer Closed Captions (CCAP) -Dateien (XML-Format) ist "
 "grösser als "
 
-#: src/lib/hints.cc:481
+#: src/lib/hints.cc:478
 msgid "At least one of your subtitle files is larger than "
 msgstr "Mindestens eine Ihrer Untertiteldateien ist grösser als "
 
-#: src/lib/hints.cc:445
+#: src/lib/hints.cc:442
 msgid ""
 "At least one of your subtitle lines has more than 52 characters.  It is "
 "recommended to make each line 52 characters at most in length."
@@ -307,7 +314,7 @@ msgstr ""
 "empfohlen, jede Untertitelzeile auf eine Länge von maximal 52 Zeichen zu "
 "beschränken."
 
-#: src/lib/hints.cc:447
+#: src/lib/hints.cc:444
 msgid ""
 "At least one of your subtitle lines has more than 79 characters.  You should "
 "make each line 79 characters at most in length."
@@ -315,7 +322,7 @@ msgstr ""
 "Mindestens eine Ihrer Untertitel-Zeilen hat mehr als 79 Zeichen. Sie sollten "
 "jede Untertitelzeile auf eine Länge von maximal 79 Zeichen begrenzen."
 
-#: src/lib/hints.cc:590
+#: src/lib/hints.cc:587
 msgid ""
 "At least one of your subtitles has more than 3 lines.  It is advisable to "
 "use no more than 3 lines."
@@ -323,7 +330,7 @@ msgstr ""
 "Mindesteins einer Ihrer Untertitel hat mehr als drei Zeilen. Es ist ratsam, "
 "nicht mehr als drei Zeilen für einen Untertitel zu nutzen."
 
-#: src/lib/hints.cc:580
+#: src/lib/hints.cc:577
 msgid ""
 "At least one of your subtitles lasts less than 15 frames.  It is advisable "
 "to make each subtitle at least 15 frames long."
@@ -331,7 +338,7 @@ msgstr ""
 "Mindestens einer Ihrer Untertitel dauert weniger als 15 Frames. Es ist "
 "ratsam, jeden Untertitel eine Länge von mindestens 15 Frames zuzuordnen."
 
-#: src/lib/hints.cc:585
+#: src/lib/hints.cc:582
 msgid ""
 "At least one of your subtitles starts less than 2 frames after the previous "
 "one.  It is advisable to make the gap between subtitles at least 2 frames."
@@ -340,7 +347,7 @@ msgstr ""
 "vorherigen Untertitel. Es ist ratsam, die Lücke zwischen Untertiteln auf "
 "mindestens 2 Frames zu vergrössern."
 
-#: src/lib/hints.cc:633
+#: src/lib/hints.cc:630
 msgid ""
 "At least one piece of subtitle or closed caption content has no specified "
 "language.  It is advisable to set the language for each piece of subtitle or "
@@ -418,15 +425,15 @@ msgstr "Bits pro pixel"
 msgid "Bob Weaver Deinterlacing Filter"
 msgstr "Bob Weaver Deinterlacing Filter"
 
-#: src/lib/util.cc:598
+#: src/lib/util.cc:601
 msgid "BsL"
 msgstr "BsL"
 
-#: src/lib/util.cc:599
+#: src/lib/util.cc:602
 msgid "BsR"
 msgstr "BsR"
 
-#: src/lib/util.cc:590
+#: src/lib/util.cc:593
 msgid "C"
 msgstr "C"
 
@@ -434,7 +441,7 @@ msgstr "C"
 msgid "Cancelled"
 msgstr "Abbruch"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "Cannot contain slashes"
 msgstr "Darf keine Schrägstriche enthalten"
 
@@ -442,13 +449,13 @@ msgstr "Darf keine Schrägstriche enthalten"
 msgid "Cannot handle pixel format %1 during %2"
 msgstr "Kann dieses Pixelformat %1 während %2 nicht bearbeiten"
 
-#: src/lib/film.cc:1662
+#: src/lib/film.cc:1711
 msgid "Cannot make a KDM as this project is not encrypted."
 msgstr ""
 "KDM Erzeugung nicht möglich, da dieses Projekt keine Verschlüsselung "
 "verwendet."
 
-#: src/lib/util.cc:559
+#: src/lib/util.cc:562
 msgid "Centre"
 msgstr "Center"
 
@@ -516,7 +523,7 @@ msgstr "Kombiniere DCPs"
 msgid "Computing digest"
 msgstr "Zusammenfassung berechnen"
 
-#: src/lib/writer.cc:535
+#: src/lib/writer.cc:531
 msgid "Computing digests"
 msgstr "Zusammenfassung ('Hashes') berechnen"
 
@@ -546,7 +553,7 @@ msgstr ""
 msgid "Content to be joined must all have or not have video"
 msgstr "Zu verbindende Inhalte müssen identische Bildeigenschaften aufweisen."
 
-#: src/lib/text_content.cc:305
+#: src/lib/text_content.cc:320
 #, fuzzy
 msgid ""
 "Content to be joined must both be main subtitle languages or both additional."
@@ -554,17 +561,17 @@ msgstr ""
 "Zu verbindende Inhalte müssen den gleichen Zeilenabstand für Untertitel "
 "aufweisen."
 
-#: src/lib/video_content.cc:207
+#: src/lib/video_content.cc:210
 #, fuzzy
 msgid "Content to be joined must have all its video used or not used."
 msgstr "Zu verbindende Inhalte müssen die gleiche Bildrate haben."
 
-#: src/lib/text_content.cc:260
+#: src/lib/text_content.cc:275
 msgid "Content to be joined must have the same 'burn subtitles' setting."
 msgstr ""
 "Zu verbindende Inhalte müssen identische Untertitel-Einstellungen verwenden."
 
-#: src/lib/text_content.cc:256
+#: src/lib/text_content.cc:271
 msgid "Content to be joined must have the same 'use subtitles' setting."
 msgstr ""
 "Zu verbindende Inhalte müssen identische Untertitel-Einstellungen verwenden."
@@ -578,72 +585,72 @@ msgid "Content to be joined must have the same audio gain."
 msgstr ""
 "Zu verbindende Inhalte müssen die gleichen Tonpegeleinstellungen verwenden."
 
-#: src/lib/video_content.cc:239
+#: src/lib/video_content.cc:242
 #, fuzzy
 msgid "Content to be joined must have the same burnt subtitle language."
 msgstr ""
 "Zu verbindende Inhalte müssen identische Untertitel-Einstellungen verwenden."
 
-#: src/lib/video_content.cc:231
+#: src/lib/video_content.cc:234
 msgid "Content to be joined must have the same colour conversion."
 msgstr "Zu verbindende Inhalte müssen die gleiche Farbumwandlung verwenden."
 
-#: src/lib/video_content.cc:219
+#: src/lib/video_content.cc:222
 msgid "Content to be joined must have the same crop."
 msgstr "Zu verbindende Inhalte müssen gleichen Beschnitt verwenden."
 
-#: src/lib/video_content.cc:223
+#: src/lib/video_content.cc:226
 #, fuzzy
 msgid "Content to be joined must have the same custom ratio setting."
 msgstr "Zu verbindende Inhalte müssen die gleiche Skalierung verwenden."
 
-#: src/lib/video_content.cc:227
+#: src/lib/video_content.cc:230
 #, fuzzy
 msgid "Content to be joined must have the same custom size setting."
 msgstr "Zu verbindende Inhalte müssen die gleiche Skalierung verwenden."
 
-#: src/lib/video_content.cc:235
+#: src/lib/video_content.cc:238
 msgid "Content to be joined must have the same fades."
 msgstr ""
 "Zu verbindende Inhalte müssen identische Ein-/Ausblendungs-Einstellungen "
 "verwenden."
 
-#: src/lib/text_content.cc:288
+#: src/lib/text_content.cc:303
 msgid "Content to be joined must have the same outline width."
 msgstr "Zu verbindende Inhalte müssen die gleiche Outline-Stärke verwenden."
 
-#: src/lib/video_content.cc:211
+#: src/lib/video_content.cc:214
 msgid "Content to be joined must have the same picture size."
 msgstr "Zu verbindende Inhalte müssen die gleiche Bildgröße haben."
 
-#: src/lib/text_content.cc:264
+#: src/lib/text_content.cc:279
 msgid "Content to be joined must have the same subtitle X offset."
 msgstr ""
 "Zu verbindende Inhalte müssen den gleichen horizontalen Untertitelversatz "
 "verwenden."
 
-#: src/lib/text_content.cc:272
+#: src/lib/text_content.cc:287
 msgid "Content to be joined must have the same subtitle X scale."
 msgstr ""
 "Zu verbindende Inhalte müssen die gleiche Untertitel X-Skalierung verwenden."
 
-#: src/lib/text_content.cc:268
+#: src/lib/text_content.cc:283
 msgid "Content to be joined must have the same subtitle Y offset."
 msgstr ""
 "Zu verbindende Inhalte müssen den gleichen vertikalen Untertitelversatz "
 "verwenden."
 
-#: src/lib/text_content.cc:276
+#: src/lib/text_content.cc:291
 msgid "Content to be joined must have the same subtitle Y scale."
 msgstr ""
 "Zu verbindende Inhalte müssen die gleiche Untertitel Y-Skalierung verwenden."
 
-#: src/lib/text_content.cc:284
+#: src/lib/text_content.cc:299
 msgid "Content to be joined must have the same subtitle fades."
 msgstr ""
 "Zu verbindende Inhalte müssen die gleichen Ein- und Ausblendzeiten aufweisen."
 
-#: src/lib/text_content.cc:280
+#: src/lib/text_content.cc:295
 msgid "Content to be joined must have the same subtitle line spacing."
 msgstr ""
 "Zu verbindende Inhalte müssen den gleichen Zeilenabstand für Untertitel "
@@ -653,15 +660,15 @@ msgstr ""
 msgid "Content to be joined must have the same video frame rate"
 msgstr "Zu verbindende Inhalte müssen die gleiche Bildrate haben."
 
-#: src/lib/video_content.cc:215
+#: src/lib/video_content.cc:218
 msgid "Content to be joined must have the same video frame type."
 msgstr "Zu verbindende Inhalte müssen den gleichen Bildtyp (z.B. 2D) haben."
 
-#: src/lib/text_content.cc:297
+#: src/lib/text_content.cc:312
 msgid "Content to be joined must use the same DCP track."
 msgstr "Zu verbindende Inhalte müssen die gleiche Spur verwenden."
 
-#: src/lib/text_content.cc:293 src/lib/text_content.cc:313
+#: src/lib/text_content.cc:308 src/lib/text_content.cc:328
 msgid "Content to be joined must use the same fonts."
 msgstr ""
 "Zu verbindende Inhalte müssen die gleichen Zeichensätze für Untertitel "
@@ -671,14 +678,14 @@ msgstr ""
 msgid "Content to be joined must use the same subtitle stream."
 msgstr "Zu verbindende Inhalte müssen die gleiche Untertitelspur verwenden."
 
-#: src/lib/text_content.cc:301
+#: src/lib/text_content.cc:316
 #, fuzzy
 msgid "Content to be joined must use the same text language."
 msgstr ""
 "Zu verbindende Inhalte müssen die gleichen Zeichensätze für Untertitel "
 "verwenden."
 
-#: src/lib/video_content.cc:430
+#: src/lib/video_content.cc:438
 msgid "Content video is %1x%2"
 msgstr "Inhalt Video ist %1x%2"
 
@@ -703,7 +710,7 @@ msgstr "Keine Verbindung zu Server %1 (%2)"
 msgid "Could not create remote directory %1 (%2)"
 msgstr "Konnte entfernten Ordner %1 (%2) nicht erstellen."
 
-#: src/lib/image_examiner.cc:65
+#: src/lib/image_examiner.cc:64
 msgid "Could not decode JPEG2000 file %1 (%2)"
 msgstr "Fehler beim Dekodieren der JPEG2000 Datei %1 (%2)"
 
@@ -739,7 +746,7 @@ msgstr "Heruntergeladene ZIP Datei kann nicht geöffnet werden (%1:%2: %3)"
 msgid "Could not open file for writing"
 msgstr "Datei konnte nicht zum Schreiben geöffnet werden."
 
-#: src/lib/ffmpeg_file_encoder.cc:269
+#: src/lib/ffmpeg_file_encoder.cc:265
 #, fuzzy
 msgid "Could not open output file %1 (%2)"
 msgstr "Datei %1 konnte nicht geschrieben werden (%2)"
@@ -756,19 +763,19 @@ msgstr "Fehler beim Start der Übertragung"
 msgid "Could not write to remote file (%1)"
 msgstr "Entfernte Datei (%1) konnte nicht gespeichert werden"
 
-#: src/lib/util.cc:569
+#: src/lib/util.cc:572
 msgid "D-BOX primary"
 msgstr "D-Box primärer TC"
 
-#: src/lib/util.cc:570
+#: src/lib/util.cc:573
 msgid "D-BOX secondary"
 msgstr "D-BOX sekundärer TC"
 
-#: src/lib/util.cc:600
+#: src/lib/util.cc:603
 msgid "DBP"
 msgstr "DBP"
 
-#: src/lib/util.cc:601
+#: src/lib/util.cc:604
 msgid "DBS"
 msgstr "DBS"
 
@@ -780,7 +787,7 @@ msgstr "DCI Flat"
 msgid "DCI Scope"
 msgstr "DCI Scope"
 
-#: src/lib/dcp_subtitle_content.cc:103
+#: src/lib/dcp_subtitle_content.cc:104
 msgid "DCP XML subtitles"
 msgstr "DCP XML Untertitel"
 
@@ -805,7 +812,7 @@ msgstr ""
 "DCP-o-matic konnte die Datei %1 nicht öffnen (%2). Vielleicht existiert sie "
 "nicht oder ist in einem unerwarteten Format."
 
-#: src/lib/film.cc:1565
+#: src/lib/film.cc:1614
 msgid ""
 "DCP-o-matic had to change your settings for referring to DCPs as OV.  Please "
 "review those settings to make sure they are what you want."
@@ -814,7 +821,7 @@ msgstr ""
 "werden. Bitte prüfen Sie alle Einstellungen noch einmal, ob sie ihren "
 "Wünschen entsprechen."
 
-#: src/lib/film.cc:1533
+#: src/lib/film.cc:1582
 #, fuzzy
 msgid ""
 "DCP-o-matic had to change your settings so that the film's frame rate is the "
@@ -830,7 +837,7 @@ msgid ""
 msgstr ""
 "DCP-o-matic unterstützt das `%1' Filter nicht mehr, er wird deaktiviert."
 
-#: src/lib/config.cc:359 src/lib/config.cc:1114
+#: src/lib/config.cc:357 src/lib/config.cc:1114
 msgid "DCP-o-matic notification"
 msgstr "DCP-o-matic Benachrichtigungen"
 
@@ -923,7 +930,7 @@ msgstr "Fehler in SubRip Datei: Ist %1 , sollte %2 sein"
 msgid "Error: %1"
 msgstr "Fehler: (%1)"
 
-#: src/lib/hints.cc:408
+#: src/lib/hints.cc:405
 #, fuzzy
 msgid "Examining audio, subtitles and closed captions"
 msgstr "Untersuche Closed Captions (CCAP)"
@@ -936,7 +943,7 @@ msgstr "Inhalt wird überprüft"
 msgid "Examining subtitles"
 msgstr "Analysiere Untertitel"
 
-#: src/lib/hints.cc:406
+#: src/lib/hints.cc:403
 #, fuzzy
 msgid "Examining subtitles and closed captions"
 msgstr "Untersuche Closed Captions (CCAP)"
@@ -966,7 +973,7 @@ msgstr "Konnte Email nicht senden"
 msgid "Feature"
 msgstr "Hauptfilm - FTR"
 
-#: src/lib/content.cc:464
+#: src/lib/content.cc:468
 msgid "Filename"
 msgstr "Dateiname"
 
@@ -978,11 +985,11 @@ msgstr "Film"
 msgid "Finding length"
 msgstr "Ermittle Länge"
 
-#: src/lib/content.cc:471
+#: src/lib/content.cc:475
 msgid "Frame rate"
 msgstr "Bildrate"
 
-#: src/lib/util.cc:943
+#: src/lib/util.cc:946
 msgid "Friday"
 msgstr "Freitag"
 
@@ -1026,11 +1033,11 @@ msgstr "Gamma 28 (BT470BG)"
 msgid "Gradient debander"
 msgstr "Gradient Glätter"
 
-#: src/lib/util.cc:594
+#: src/lib/util.cc:597
 msgid "HI"
 msgstr "HI"
 
-#: src/lib/util.cc:563
+#: src/lib/util.cc:566
 msgid "Hearing impaired"
 msgstr "HI"
 
@@ -1054,13 +1061,13 @@ msgstr "IEC61966-2-1 (sRGB or sYCC)"
 msgid "IEC61966-2-4"
 msgstr "IEC61966-2-4"
 
-#: src/lib/hints.cc:188
+#: src/lib/hints.cc:185
 msgid "If you do use 25fps you should change your DCP standard to SMPTE."
 msgstr ""
 "Sofern Sie eine Bildrate von 25fps verwenden, sollten Sie den DCP Standard "
 "für dieses Projekt auf 'SMPTE' setzen!"
 
-#: src/lib/hints.cc:251
+#: src/lib/hints.cc:248
 msgid ""
 "In general it is now advisable to make SMPTE DCPs unless you have a "
 "particular reason to use Interop.  You are advised to set your DCP to use "
@@ -1071,7 +1078,7 @@ msgstr ""
 "den SMPTE-Standard für das DCP zu setzen. Nutzen Sie dazu den \"DCP\" "
 "Tabreiter."
 
-#: src/lib/hints.cc:573
+#: src/lib/hints.cc:570
 msgid ""
 "It is advisable to put your first subtitle at least 4 seconds after the "
 "start of the DCP to make sure it is seen."
@@ -1088,7 +1095,7 @@ msgstr "Ein unbekannter Fehler ist aufgetreten."
 msgid "JEDEC P22"
 msgstr "JEDEC P22"
 
-#: src/lib/config.cc:349 src/lib/config.cc:1099
+#: src/lib/config.cc:347 src/lib/config.cc:1099
 msgid "KDM delivery: $CPL_NAME"
 msgstr "KDM Zustellung: $CPL_NAME"
 
@@ -1096,39 +1103,39 @@ msgstr "KDM Zustellung: $CPL_NAME"
 msgid "Kernel deinterlacer"
 msgstr "Kernel De-Interlacer"
 
-#: src/lib/ffmpeg_encoder.cc:251 src/lib/util.cc:588
+#: src/lib/ffmpeg_encoder.cc:253 src/lib/util.cc:591
 msgid "L"
 msgstr "L"
 
-#: src/lib/util.cc:596
+#: src/lib/util.cc:599
 msgid "Lc"
 msgstr "Lc"
 
-#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:557
+#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:560
 msgid "Left"
 msgstr "Links"
 
-#: src/lib/util.cc:565
+#: src/lib/util.cc:568
 msgid "Left centre"
 msgstr "Center links"
 
-#: src/lib/util.cc:567
+#: src/lib/util.cc:570
 msgid "Left rear surround"
 msgstr "Surround hinten links"
 
-#: src/lib/util.cc:561
+#: src/lib/util.cc:564
 msgid "Left surround"
 msgstr "Surround links"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "Length"
 msgstr "Länge"
 
-#: src/lib/util.cc:591
+#: src/lib/util.cc:594
 msgid "Lfe"
 msgstr "Lfe"
 
-#: src/lib/util.cc:560
+#: src/lib/util.cc:563
 msgid "Lfe (sub)"
 msgstr "LFE (Subwoofer)"
 
@@ -1152,12 +1159,12 @@ msgstr "Logarithmisch (Bereich 100:1)"
 msgid "Logarithmic (316:1 range)"
 msgstr "Logarithmisch  (Bereich 316:1 )"
 
-#: src/lib/exceptions.cc:145
+#: src/lib/exceptions.cc:152
 msgid "Lost communication between main and writer processes"
 msgstr ""
 "Verbindungsverlust zwischen Hauptprozess (Main) und Schreibprozess (Writer)"
 
-#: src/lib/util.cc:592
+#: src/lib/util.cc:595
 msgid "Ls"
 msgstr "Ls"
 
@@ -1169,19 +1176,19 @@ msgstr "Mitte-Seite Decoder"
 msgid "Misc"
 msgstr "Verschiedenes"
 
-#: src/lib/dcp_examiner.cc:164
+#: src/lib/dcp_examiner.cc:175
 msgid "Mismatched audio channel counts in DCP"
 msgstr "Unterschiedliche Audio-Kanalzahlen im DCP"
 
-#: src/lib/dcp_examiner.cc:170
+#: src/lib/dcp_examiner.cc:181
 msgid "Mismatched audio sample rates in DCP"
 msgstr "Unterschiedliche Audioabtastraten im DCP"
 
-#: src/lib/dcp_examiner.cc:137
+#: src/lib/dcp_examiner.cc:145
 msgid "Mismatched frame rates in DCP"
 msgstr "Unterschiedliche Bildraten im DCP"
 
-#: src/lib/dcp_examiner.cc:145
+#: src/lib/dcp_examiner.cc:153
 msgid "Mismatched video sizes in DCP"
 msgstr "Unterschiedliche Auflösungen im DCP"
 
@@ -1189,11 +1196,11 @@ msgstr "Unterschiedliche Auflösungen im DCP"
 msgid "Missing required setting %1"
 msgstr "Benötigte Einstellung %1 fehlt"
 
-#: src/lib/util.cc:935
+#: src/lib/util.cc:938
 msgid "Monday"
 msgstr "Montag"
 
-#: src/lib/writer.cc:763
+#: src/lib/writer.cc:759
 msgid "Mono"
 msgstr "Mono"
 
@@ -1217,7 +1224,7 @@ msgstr "Keine gültigen Bilddaten gefunden."
 msgid "Noise reduction"
 msgstr "Rauschunterdrückung"
 
-#: src/lib/writer.cc:731 src/lib/writer.cc:738 src/lib/writer.cc:761
+#: src/lib/writer.cc:727 src/lib/writer.cc:734 src/lib/writer.cc:757
 msgid "None"
 msgstr "Kein"
 
@@ -1258,7 +1265,7 @@ msgstr "Überbestimmte Wavelet Entrauschung"
 msgid "P3"
 msgstr "P3"
 
-#: src/lib/util.h:59
+#: src/lib/util.h:64
 msgid ""
 "Please report this problem by using Help -> Report a problem or via email to "
 "carl@dcpomatic.com"
@@ -1270,7 +1277,7 @@ msgstr ""
 msgid "Policy"
 msgstr "Vorschrift - POL"
 
-#: src/lib/content.cc:480
+#: src/lib/content.cc:484
 msgid "Prepared for video frame rate"
 msgstr "Angelegt für Bildrate"
 
@@ -1286,7 +1293,7 @@ msgstr "Promotional"
 msgid "Public Service Announcement"
 msgstr "Hinweis - PSA"
 
-#: src/lib/ffmpeg_encoder.cc:256 src/lib/util.cc:589
+#: src/lib/ffmpeg_encoder.cc:258 src/lib/util.cc:592
 msgid "R"
 msgstr "R"
 
@@ -1298,7 +1305,7 @@ msgstr "RGB / sRGB (IEC61966-2-1)"
 msgid "Rating"
 msgstr "Freigabehinweis - RTG"
 
-#: src/lib/util.cc:597
+#: src/lib/util.cc:600
 msgid "Rc"
 msgstr "Rc"
 
@@ -1318,19 +1325,19 @@ msgstr "Rec. 601 (SD)"
 msgid "Rec. 709"
 msgstr "Rec. 709 (HD)"
 
-#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:558
+#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:561
 msgid "Right"
 msgstr "Rechts"
 
-#: src/lib/util.cc:566
+#: src/lib/util.cc:569
 msgid "Right centre"
 msgstr "Center rechts"
 
-#: src/lib/util.cc:568
+#: src/lib/util.cc:571
 msgid "Right rear surround"
 msgstr "Surround hinten rechts"
 
-#: src/lib/util.cc:562
+#: src/lib/util.cc:565
 msgid "Right surround"
 msgstr "Surround rechts"
 
@@ -1342,7 +1349,7 @@ msgstr "90 Grad gegen den Uhrzeigersinn rotieren"
 msgid "Rotate 90 degrees clockwise"
 msgstr "90 Grad im Uhrzeigersinn rotieren"
 
-#: src/lib/util.cc:593
+#: src/lib/util.cc:596
 msgid "Rs"
 msgstr "Rs"
 
@@ -1367,7 +1374,7 @@ msgstr "SMPTE 2085, Y'D'zD'x"
 msgid "SMPTE 240M"
 msgstr "SMPTE 240M"
 
-#: src/lib/hints.cc:615
+#: src/lib/hints.cc:612
 msgid ""
 "SMPTE DCPs with the type FTR (feature) should have markers for the first "
 "frame of end credits (FFEC) and the first frame of moving credits (FFMC).  "
@@ -1409,7 +1416,7 @@ msgstr "SSH Fehler (%1)"
 msgid "SSH error [%1] (%2)"
 msgstr "SSH Fehler (%1)"
 
-#: src/lib/util.cc:945
+#: src/lib/util.cc:948
 msgid "Saturday"
 msgstr "Samstag"
 
@@ -1429,11 +1436,11 @@ msgstr "Kurzfilm - SHR"
 # - Sign as (digital) signature  (DE: Signatur)
 # -Sign as +,- sign (DE: Zeichen)
 # -Sign in the sense of a warning sign/signal (DE Signal)
-#: src/lib/util.cc:602
+#: src/lib/util.cc:605
 msgid "Sign"
 msgstr "Signatur"
 
-#: src/lib/video_content.cc:500
+#: src/lib/video_content.cc:510
 msgid "Size"
 msgstr "Größe"
 
@@ -1464,7 +1471,7 @@ msgstr ""
 "Diese Inhalte werden nun neu untersucht, ggfs. müssen Sie bei Änderungen "
 "deren typspezifische Einstellungen überprüfen."
 
-#: src/lib/hints.cc:554
+#: src/lib/hints.cc:551
 msgid ""
 "Some of your closed captions span more than %1 lines, so they will be "
 "truncated."
@@ -1472,7 +1479,7 @@ msgstr ""
 "Einige ihrer Closed Captions (CCAP) sind länger als %1 Zeile(n). Sie werden "
 "abgeschnitten."
 
-#: src/lib/hints.cc:653
+#: src/lib/hints.cc:650
 msgid ""
 "Some of your content has audio but you have not set the audio language.  It "
 "is advisable to set the audio language in the \"DCP\" tab unless your audio "
@@ -1482,15 +1489,15 @@ msgstr ""
 "festgelegt. Es ist ratsam, die Audio-Sprache im \"DCP\" Tabreiter zu setzen, "
 "außer Ihre Audiospuren haben keine gesprochenen Teile."
 
-#: src/lib/film.cc:406
+#: src/lib/film.cc:417
 msgid "Some of your content needs a KDM"
 msgstr "Teile ihrer Quellinhalte (DCP) benötigen eine KDM"
 
-#: src/lib/film.cc:409
+#: src/lib/film.cc:420
 msgid "Some of your content needs an OV"
 msgstr "Teile ihrer Quellinhalte (DCP) benötigen eine OV-CPL"
 
-#: src/lib/writer.cc:765
+#: src/lib/writer.cc:761
 msgid "Stereo"
 msgstr "Stereo"
 
@@ -1502,7 +1509,7 @@ msgstr "Stereo auf 5.1 up-mixer A"
 msgid "Stereo to 5.1 up-mixer B"
 msgstr "Stereo auf 5.1 up-mixer B"
 
-#: src/lib/util.cc:933
+#: src/lib/util.cc:936
 msgid "Sunday"
 msgstr "Sonntag"
 
@@ -1522,7 +1529,7 @@ msgstr "Test - TST"
 msgid "Text subtitles"
 msgstr "Untertitel (Text)"
 
-#: src/lib/film.cc:389
+#: src/lib/film.cc:400
 msgid "The DCP is empty, perhaps because all the content has zero length."
 msgstr ""
 "Das DCP ist leer, da vielleicht alle Inhalte eine Länge von Null aufweisen"
@@ -1535,7 +1542,7 @@ msgstr "Die Zertifikatskette für die Signatur ist ungültig"
 msgid "The certificate chain for signing is invalid (%1)"
 msgstr "Die Zertifikatskette für Signaturen ist ungültig (%1)"
 
-#: src/lib/video_decoder.cc:86
+#: src/lib/video_decoder.cc:81
 msgid ""
 "The content file %1 is set as 3D but does not appear to contain 3D images.  "
 "Please set it to 2D.  You can still make a 3D DCP from this content by "
@@ -1570,7 +1577,7 @@ msgstr "Die Spur %1 wurde um %2 Millisekunden gekürzt."
 msgid "The file %1 has been trimmed by %2 milliseconds more."
 msgstr "Die Spur %1 wurde um %2 Millisekunden verlängert."
 
-#: src/lib/hints.cc:241
+#: src/lib/hints.cc:238
 msgid ""
 "There is a large difference between the frame rate of your DCP and that of "
 "some of your content.  This will cause your audio to play back at a much "
@@ -1585,7 +1592,7 @@ msgstr ""
 "vorgesehene Projektionssystem diese Bildrate unterstützt, sollten Sie die "
 "DCP Bildrate auf den gleichen oder zumindest einen näheren Wert einstellen."
 
-#: src/lib/dcp_content.cc:657
+#: src/lib/dcp_content.cc:659
 msgid "There is no video in this DCP"
 msgstr "Dieses DCP enthält kein Bild"
 
@@ -1599,14 +1606,14 @@ msgstr ""
 "32-Bit-Betriebssystem ausführen, versuchen Sie, die Anzahl der Rechen-"
 "Threads in den Voreinstellungen n zu reduzieren."
 
-#: src/lib/util.cc:1146
+#: src/lib/util.cc:1150
 #, fuzzy
 msgid "This KDM was made for DCP-o-matic but not for its leaf certificate."
 msgstr ""
 "KDM ist zwar für DCP-o-matic ausgestellt, jedoch nicht für das Leaf-"
 "Zertifikat dieser Installation."
 
-#: src/lib/util.cc:1144
+#: src/lib/util.cc:1148
 #, fuzzy
 msgid "This KDM was not made for DCP-o-matic's decryption certificate."
 msgstr ""
@@ -1646,7 +1653,7 @@ msgstr ""
 "gehöriges geladenes DCP selektieren und mit <RechtsClick> \"KDM zuweisen\" "
 "ausführen!"
 
-#: src/lib/film.cc:581
+#: src/lib/film.cc:595
 msgid ""
 "This film was created with a newer version of DCP-o-matic, and it cannot be "
 "loaded into this version.  Sorry!"
@@ -1655,7 +1662,7 @@ msgstr ""
 "kann leider nicht mit dieser älteren Version geladen werden. Sie müssen den "
 "Film neu erstellen oder eine aktuelle Version installieren. Sorry!"
 
-#: src/lib/film.cc:566
+#: src/lib/film.cc:580
 msgid ""
 "This film was created with an older version of DCP-o-matic, and "
 "unfortunately it cannot be loaded into this version.  You will need to "
@@ -1665,7 +1672,7 @@ msgstr ""
 "kann leider nicht mit dieser Version geladen werden. Sie müssen den Film neu "
 "erstellen. Sorry!"
 
-#: src/lib/util.cc:941
+#: src/lib/util.cc:944
 msgid "Thursday"
 msgstr "Donnerstag"
 
@@ -1685,7 +1692,7 @@ msgstr "Wandle %1 um"
 msgid "Transitional"
 msgstr "Überleitung - XSN"
 
-#: src/lib/util.cc:937
+#: src/lib/util.cc:940
 msgid "Tuesday"
 msgstr "Dienstag"
 
@@ -1710,7 +1717,7 @@ msgstr "unbekannt"
 msgid "Unknown error"
 msgstr "Unbekannter Fehler"
 
-#: src/lib/ffmpeg_decoder.cc:343
+#: src/lib/ffmpeg_decoder.cc:339
 msgid "Unrecognised audio sample format (%1)"
 msgstr "Audio Sample Format (%1) nicht erkannt."
 
@@ -1730,7 +1737,7 @@ msgstr "Unbestimmt"
 msgid "Untitled"
 msgstr "Unbenannt"
 
-#: src/lib/util.cc:571 src/lib/util.cc:572
+#: src/lib/util.cc:574 src/lib/util.cc:575
 msgid "Unused"
 msgstr "Ungenutzt"
 
@@ -1742,7 +1749,7 @@ msgstr "Upmix L"
 msgid "Upmix R"
 msgstr "Upmix R"
 
-#: src/lib/util.cc:595
+#: src/lib/util.cc:598
 msgid "VI"
 msgstr "VI"
 
@@ -1754,7 +1761,7 @@ msgstr "DCP Integrität prüfen"
 msgid "Vertical flip"
 msgstr "Vertikal Spiegeln"
 
-#: src/lib/util.cc:564
+#: src/lib/util.cc:567
 msgid "Visually impaired"
 msgstr "VI"
 
@@ -1766,7 +1773,7 @@ msgstr "Warte..."
 msgid "Weave filter"
 msgstr "Weave Deinterlacer"
 
-#: src/lib/util.cc:939
+#: src/lib/util.cc:942
 msgid "Wednesday"
 msgstr "Mittwoch"
 
@@ -1778,7 +1785,7 @@ msgstr "YCOCG"
 msgid "Yet Another Deinterlacing Filter"
 msgstr "Und ein weiterer De-Interlacer ('YADIF')"
 
-#: src/lib/hints.cc:201
+#: src/lib/hints.cc:198
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You are advised to change the DCP frame rate "
@@ -1789,7 +1796,7 @@ msgstr ""
 "abweichend von 24fps oder 48fps(3D) nicht leichtfertig! Ändern Sie die "
 "Bildrate gegebenenfalls in %2 fps."
 
-#: src/lib/hints.cc:185
+#: src/lib/hints.cc:182
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You may want to consider changing your frame "
@@ -1800,7 +1807,7 @@ msgstr ""
 "abweichend von 24fps oder 48fps(3D) nicht leichtfertig! Ändern Sie die "
 "Bildrate gegebenenfalls in %2 fps!"
 
-#: src/lib/hints.cc:195
+#: src/lib/hints.cc:192
 msgid ""
 "You are set up for a DCP frame rate of 30fps, which is not supported by all "
 "projectors.  Be aware that you may have compatibility problems."
@@ -1809,7 +1816,7 @@ msgstr ""
 "nicht von allen Projektionssystemen unterstützt! Wählen Sie Bildraten "
 "abweichend von 24fps oder 48fps(3D) nicht leichtfertig!"
 
-#: src/lib/hints.cc:306
+#: src/lib/hints.cc:303
 msgid ""
 "You are using 3D content but your DCP is set to 2D.  Set the DCP to 3D if "
 "you want to play it back on a 3D system (e.g. Real-D, MasterImage etc.)"
@@ -1818,7 +1825,7 @@ msgstr ""
 "ihre Inhalte in 3D wiedergeben wollen, wählen Sie unter dem DCP-Reiter "
 "'Bild' '3D DCP' aus. Andernfalls wird ein 2D-DCP erzeugt."
 
-#: src/lib/hints.cc:122
+#: src/lib/hints.cc:119
 msgid ""
 "You are using DCP-o-matic's stereo-to-5.1 upmixer.  This is experimental and "
 "may result in poor-quality audio.  If you continue, you should listen to the "
@@ -1829,7 +1836,7 @@ msgstr ""
 "dieses DCP nach der Erzeugung in einer voll surroundfähigen Abhörumgebung "
 "testen, bevor Sie es zur Verbreitung frei geben."
 
-#: src/lib/hints.cc:290
+#: src/lib/hints.cc:287
 msgid ""
 "You have %1 files that look like they are VOB files from DVD. You should "
 "join them to ensure smooth joins between the files."
@@ -1839,7 +1846,7 @@ msgstr ""
 "'Nahtlos verbinden' verwenden, um Sprünge in der Wiedergabe zu vermeiden."
 
 # "remove some Atmos coment" sounds unspecific. Assuming that the root cauase of the issues are few pieces of content with the false frame rate, the recommendation could be to remove those that contain the false frame rate (could the standard Atmos framerate be set in the config/setings? If yes, this should be mentioned as a solution proposal)
-#: src/lib/film.cc:1529
+#: src/lib/film.cc:1578
 msgid ""
 "You have more than one piece of Atmos content, and they do not have the same "
 "frame rate.  You must remove some Atmos content."
@@ -1848,7 +1855,7 @@ msgstr ""
 "unterschiedliche Frame-Raten. Entfernen Sie die Inhalte, welche die "
 "unpassenden Frame-Raten haben."
 
-#: src/lib/hints.cc:561
+#: src/lib/hints.cc:558
 msgid ""
 "You have overlapping closed captions, which are not allowed in Interop "
 "DCPs.  Change your DCP standard to SMPTE."
@@ -1857,7 +1864,7 @@ msgstr ""
 "nicht zulässig! Bitte entfernen Sie die Überlappung oder ändern Sie den DCP "
 "Wrapping Typ auf 'SMPTE'."
 
-#: src/lib/hints.cc:274
+#: src/lib/hints.cc:271
 msgid ""
 "You have specified a font file which is larger than 640kB.  This is very "
 "likely to cause problems on playback."
@@ -1868,11 +1875,11 @@ msgstr ""
 "speziellen Zeichensatz angewiesen sind, googlen Sie nach 'TI Font "
 "Compressor' und verwenden Sie ggfs. dieses Tool zur Behebung des Problems."
 
-#: src/lib/film.cc:385
+#: src/lib/film.cc:396
 msgid "You must add some content to the DCP before creating it"
 msgstr "Sie müssen erst Inhalte hinzufügen bevor Sie ein DCP erstellen können!"
 
-#: src/lib/hints.cc:112
+#: src/lib/hints.cc:109
 msgid ""
 "Your DCP has fewer than 6 audio channels.  This may cause problems on some "
 "projectors.  You may want to set the DCP to have 6 channels.  It does not "
@@ -1885,7 +1892,7 @@ msgstr ""
 "Audiokanäle haben, werden die nicht genutzten Audiokanäle automatisch mit "
 "Stille aufgefüllt."
 
-#: src/lib/hints.cc:160
+#: src/lib/hints.cc:157
 #, fuzzy
 msgid ""
 "Your DCP uses an unusual container ratio.  This may cause problems on some "
@@ -1895,7 +1902,7 @@ msgstr ""
 "Projektionssystemen Probleme verursachen. Bitte verwenden Sie wann immer "
 "möglich Flat oder Scope Container."
 
-#: src/lib/hints.cc:340
+#: src/lib/hints.cc:337
 msgid ""
 "Your audio level is very high (on %1).  You should reduce the gain of your "
 "audio content."
@@ -1907,7 +1914,7 @@ msgstr ""
 "um -20dBFS RMS. Diese Angaben dienen nur zur Groborientierung. Prüfen Sie "
 "ihre DCPs in einem eingemessenen Kinosaal!"
 
-#: src/lib/config.cc:289
+#: src/lib/config.cc:287
 msgid ""
 "Your default container is not valid and has been changed to Flat (1.85:1)"
 msgstr ""
@@ -1937,7 +1944,7 @@ msgstr "[Bewegte Bilder]"
 msgid "[still]"
 msgstr "[Standbild]"
 
-#: src/lib/dcp_subtitle_content.cc:97 src/lib/string_text_file_content.cc:78
+#: src/lib/dcp_subtitle_content.cc:98 src/lib/string_text_file_content.cc:78
 msgid "[subtitles]"
 msgstr "[Untertitel]"
 
@@ -1955,11 +1962,11 @@ msgstr "Zeit für Verbindungsaufbau abgelaufen"
 msgid "connecting"
 msgstr "verbinde..."
 
-#: src/lib/film.cc:381
+#: src/lib/film.cc:392
 msgid "container"
 msgstr "Containerformat"
 
-#: src/lib/film.cc:393
+#: src/lib/film.cc:404
 msgid "content type"
 msgstr "Inhaltsbeschreibung"
 
@@ -2015,38 +2022,38 @@ msgstr "error during async_read (%1)"
 msgid "error during async_write (%1)"
 msgstr "error during async_write (%1)"
 
-#: src/lib/content.cc:473 src/lib/content.cc:482
+#: src/lib/content.cc:477 src/lib/content.cc:486
 msgid "frames per second"
 msgstr "Bilder pro Sekunde"
 
 #. / TRANSLATORS: h here is an abbreviation for hours
-#: src/lib/util.cc:200
+#: src/lib/util.cc:203
 msgid "h"
 msgstr "h"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:750
+#: src/lib/dcp_content.cc:752
 msgid "it does not have closed captions in all its reels."
 msgstr ""
 "Das DCP enthält in einigen Akten ('Reels') keine Closed Captions (CCAP)."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:739
+#: src/lib/dcp_content.cc:741
 msgid "it does not have open subtitles in all its reels."
 msgstr "Das DCP enthält in einigen Akten ('Reels') keine Untertitel."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:706
+#: src/lib/dcp_content.cc:708
 msgid "it does not have sound in all its reels."
 msgstr "Das DCP enthält in einigen Akten ('Reels') keinen Ton."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:610
+#: src/lib/dcp_content.cc:612
 msgid "it has a different frame rate to the film."
 msgstr "Dieses Projekt verwendet eine andere Bildrate als dieses DCP."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:765
+#: src/lib/dcp_content.cc:767
 msgid ""
 "it has a start trim so its subtitles or closed captions must be re-written."
 msgstr ""
@@ -2054,56 +2061,56 @@ msgstr ""
 "Captions (CCAP) neu geschrieben werden."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:667
+#: src/lib/dcp_content.cc:669
 msgid "it is 2K and the film is 4K."
 msgstr ""
 "es ist in 2k, das gegenwärtige Projekt jedoch 4k. Eine Mischung ist nicht "
 "möglich!"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:664
+#: src/lib/dcp_content.cc:666
 msgid "it is 4K and the film is 2K."
 msgstr ""
 "es ist in 4k, das gegenwärtige Projekt jedoch 2k. Eine Mischung ist nicht "
 "möglich!"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:598
+#: src/lib/dcp_content.cc:600
 msgid "it is Interop and the film is set to SMPTE."
 msgstr ""
 "Dieses Projekt ist auf ’SMPTE’ Standard konfiguriert, das referenzierte DCP "
 "ist jedoch in ‚INTEROP‘! Eine Mischung ist nicht möglich!"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:602
+#: src/lib/dcp_content.cc:604
 msgid "it is SMPTE and the film is set to Interop."
 msgstr ""
 "Dieses Projekt ist auf ‚INTEROP‘ Standard konfiguriert, das referenzierte "
 "DCP ist jedoch in ‚SMPTE‘. Eine Mischung ist nicht möglich!"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:712
+#: src/lib/dcp_content.cc:714
 msgid "it overlaps other audio content; remove the other content."
 msgstr ""
 "Einige Audioanteile überlappen mit diesem DCP, bitte entfernen Sie diese (-"
 ">Zeitleiste)!"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:770
+#: src/lib/dcp_content.cc:772
 msgid "it overlaps other text content; remove the other content."
 msgstr ""
 "Einige Textanteile überlappen in diesem DCP, bitte entfernen Sie diese (-"
 ">Zeitleiste)!"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:677
+#: src/lib/dcp_content.cc:679
 msgid "it overlaps other video content; remove the other content."
 msgstr ""
 "Einige Videoanteile überlappen mit diesem DCP, bitte entfernen Sie diese (-"
 ">Zeitleiste)!"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:633
+#: src/lib/dcp_content.cc:635
 msgid ""
 "its reel lengths differ from those in the film; set the reel mode to 'split "
 "by video content'."
@@ -2112,12 +2119,12 @@ msgstr ""
 "unter 'DCP' muss auf 'An Inhaltsgrenzen aufteilen' gesetzt werden."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:672
+#: src/lib/dcp_content.cc:674
 msgid "its video frame size differs from the film's."
 msgstr "Dieses Projekt verwendet eine andere Bildauflösung als dieses DCP."
 
 #. / TRANSLATORS: m here is an abbreviation for minutes
-#: src/lib/util.cc:209
+#: src/lib/util.cc:212
 msgid "m"
 msgstr "m"
 
@@ -2125,13 +2132,13 @@ msgstr "m"
 msgid "moving"
 msgstr "wird verschoben"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "name"
 msgstr "Name"
 
 # typo in original language? "one if its" -> "one of its"
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:756
+#: src/lib/dcp_content.cc:758
 #, fuzzy
 msgid ""
 "one of its closed caption has a non-zero entry point so it must be re-"
@@ -2142,7 +2149,7 @@ msgstr ""
 
 # typo in original language? "one if its" -> "one of its"
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:743
+#: src/lib/dcp_content.cc:745
 #, fuzzy
 msgid ""
 "one of its subtitle reels has a non-zero entry point so it must be re-"
@@ -2152,7 +2159,7 @@ msgstr ""
 "ungleich Null ist; daher muss er erneut geschrieben werden. UD"
 
 #. / TRANSLATORS: s here is an abbreviation for seconds
-#: src/lib/util.cc:219
+#: src/lib/util.cc:222
 msgid "s"
 msgstr "s"
 
@@ -2160,7 +2167,7 @@ msgstr "s"
 msgid "sRGB"
 msgstr "sRGB"
 
-#: src/lib/film.cc:402
+#: src/lib/film.cc:413
 msgid "some of your content is missing"
 msgstr "Inhalte fehlen"
 
@@ -2172,7 +2179,7 @@ msgstr "Standbild"
 msgid "unknown"
 msgstr "unbekannt"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "video frames"
 msgstr "Video Bilder"
 
diff --git a/src/lib/po/es_ES.po b/src/lib/po/es_ES.po
index 040f7a06d..5566e1955 100644
--- a/src/lib/po/es_ES.po
+++ b/src/lib/po/es_ES.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: LIBDCPOMATIC\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-08-20 23:10+0200\n"
+"POT-Creation-Date: 2021-10-17 15:26+0200\n"
 "PO-Revision-Date: 2018-02-25 14:29-0600\n"
 "Last-Translator: Manuel AC <manuel.acevedo@civantos.>\n"
 "Language-Team: Manuel AC <manuel.acevedo@civantos.com>\n"
@@ -17,7 +17,7 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "X-Generator: Poedit 2.0.6\n"
 
-#: src/lib/video_content.cc:486
+#: src/lib/video_content.cc:496
 #, c-format
 msgid ""
 "\n"
@@ -26,7 +26,7 @@ msgstr ""
 "\n"
 "Velocidad del contenido %.4f\n"
 
-#: src/lib/video_content.cc:451
+#: src/lib/video_content.cc:461
 msgid ""
 "\n"
 "Cropped to %1x%2"
@@ -34,7 +34,7 @@ msgstr ""
 "\n"
 "Recortado a %1x%2"
 
-#: src/lib/video_content.cc:444
+#: src/lib/video_content.cc:452
 #, c-format
 msgid ""
 "\n"
@@ -43,7 +43,7 @@ msgstr ""
 "\n"
 "Proporción de aspecto mostrada %.2f:1"
 
-#: src/lib/video_content.cc:474
+#: src/lib/video_content.cc:484
 msgid ""
 "\n"
 "Padded with black to fit container %1 (%2x%3)"
@@ -51,7 +51,7 @@ msgstr ""
 "\n"
 "Completado con negro para cubrir el contenedor %1 (%2x%3)"
 
-#: src/lib/video_content.cc:464
+#: src/lib/video_content.cc:474
 msgid ""
 "\n"
 "Scaled to %1x%2"
@@ -59,7 +59,7 @@ msgstr ""
 "\n"
 "Redimensionado a %1x%2"
 
-#: src/lib/video_content.cc:468 src/lib/video_content.cc:479
+#: src/lib/video_content.cc:478 src/lib/video_content.cc:489
 #, c-format
 msgid " (%.2f:1)"
 msgstr " (%.2f:1)"
@@ -104,7 +104,7 @@ msgstr ""
 msgid "%1 [Atmos]"
 msgstr "%1 [Atmos]"
 
-#: src/lib/dcp_content.cc:318
+#: src/lib/dcp_content.cc:320
 msgid "%1 [DCP]"
 msgstr "%1 [DCP]"
 
@@ -120,7 +120,7 @@ msgstr "%1 [película]"
 msgid "%1 [video]"
 msgstr "%1 [película]"
 
-#: src/lib/video_content.cc:439
+#: src/lib/video_content.cc:447
 #, c-format
 msgid ", pixel aspect ratio %.2f:1"
 msgstr ", proporción de aspecto de pixel %.2f:1"
@@ -169,7 +169,7 @@ msgstr "2.39 (Scope)"
 msgid "3D denoiser"
 msgstr "reducción de ruido 3D"
 
-#: src/lib/hints.cc:212
+#: src/lib/hints.cc:209
 msgid ""
 "4K 3D is only supported by a very limited number of projectors.  Unless you "
 "know that you will play this DCP back on a capable projector, it is "
@@ -201,7 +201,7 @@ msgid ""
 "Paypal to donate €10</a></ul><p>Thank you!"
 msgstr ""
 
-#: src/lib/hints.cc:169
+#: src/lib/hints.cc:166
 msgid ""
 "A few projectors have problems playing back very high bit-rate DCPs.  It is "
 "a good idea to drop the JPEG2000 bandwidth down to about 200Mbit/s; this is "
@@ -211,6 +211,13 @@ msgstr ""
 "banda muy alto. Es buena idea bajar el ancho de banda JPEG2000 a unos 200 "
 "Mbits/segundo, esto no debería afectar a la calidad de la imagen."
 
+#: src/lib/text_content.cc:248
+msgid ""
+"A subtitle or closed caption file in this project is marked with the "
+"language '%1', which DCP-o-matic does not recognise.  The file's language "
+"has been cleared."
+msgstr ""
+
 #: src/lib/ffmpeg_content.cc:635
 msgid "ARIB STD-B67 ('Hybrid log-gamma')"
 msgstr "ARIB STD-B67 ('Log-gamma híbrido')"
@@ -219,7 +226,7 @@ msgstr "ARIB STD-B67 ('Log-gamma híbrido')"
 msgid "Advertisement"
 msgstr "Publicidad"
 
-#: src/lib/hints.cc:146
+#: src/lib/hints.cc:143
 msgid ""
 "All of your content is in Scope (2.39:1) but your DCP's container is Flat "
 "(1.85:1).  This will letter-box your content inside a Flat (1.85:1) frame.  "
@@ -230,7 +237,7 @@ msgstr ""
 "(1.85:1). Esto creará bandas negras horizontales. Puede que prefieras "
 "seleccionar el contenedor DCP en Scope (2.39:1) en la pestaña \"DCP\"."
 
-#: src/lib/hints.cc:150
+#: src/lib/hints.cc:147
 #, fuzzy
 msgid ""
 "All of your content narrower than 1.90:1 but your DCP's container is Scope "
@@ -255,54 +262,54 @@ msgstr "Analizar audio"
 msgid "Analysing subtitles"
 msgstr "Buscando subtítulos"
 
-#: src/lib/hints.cc:368
+#: src/lib/hints.cc:365
 msgid ""
 "At least one marker comes after the end of the project and will be ignored."
 msgstr ""
 
-#: src/lib/hints.cc:473
+#: src/lib/hints.cc:470
 msgid "At least one of your closed caption files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:466
+#: src/lib/hints.cc:463
 msgid "At least one of your closed caption files' XML part is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:481
+#: src/lib/hints.cc:478
 msgid "At least one of your subtitle files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:445
+#: src/lib/hints.cc:442
 msgid ""
 "At least one of your subtitle lines has more than 52 characters.  It is "
 "recommended to make each line 52 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:447
+#: src/lib/hints.cc:444
 msgid ""
 "At least one of your subtitle lines has more than 79 characters.  You should "
 "make each line 79 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:590
+#: src/lib/hints.cc:587
 msgid ""
 "At least one of your subtitles has more than 3 lines.  It is advisable to "
 "use no more than 3 lines."
 msgstr ""
 
-#: src/lib/hints.cc:580
+#: src/lib/hints.cc:577
 msgid ""
 "At least one of your subtitles lasts less than 15 frames.  It is advisable "
 "to make each subtitle at least 15 frames long."
 msgstr ""
 
-#: src/lib/hints.cc:585
+#: src/lib/hints.cc:582
 msgid ""
 "At least one of your subtitles starts less than 2 frames after the previous "
 "one.  It is advisable to make the gap between subtitles at least 2 frames."
 msgstr ""
 
-#: src/lib/hints.cc:633
+#: src/lib/hints.cc:630
 msgid ""
 "At least one piece of subtitle or closed caption content has no specified "
 "language.  It is advisable to set the language for each piece of subtitle or "
@@ -376,15 +383,15 @@ msgstr "Bits por pixel"
 msgid "Bob Weaver Deinterlacing Filter"
 msgstr "Yet Another Deinterlacing Filter"
 
-#: src/lib/util.cc:598
+#: src/lib/util.cc:601
 msgid "BsL"
 msgstr "BsL"
 
-#: src/lib/util.cc:599
+#: src/lib/util.cc:602
 msgid "BsR"
 msgstr "BsR"
 
-#: src/lib/util.cc:590
+#: src/lib/util.cc:593
 msgid "C"
 msgstr "C"
 
@@ -392,7 +399,7 @@ msgstr "C"
 msgid "Cancelled"
 msgstr "Cancelado"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 #, fuzzy
 msgid "Cannot contain slashes"
 msgstr "no puede contener barras"
@@ -401,11 +408,11 @@ msgstr "no puede contener barras"
 msgid "Cannot handle pixel format %1 during %2"
 msgstr "No se puede usar el formato de pixel %1 para %2"
 
-#: src/lib/film.cc:1662
+#: src/lib/film.cc:1711
 msgid "Cannot make a KDM as this project is not encrypted."
 msgstr ""
 
-#: src/lib/util.cc:559
+#: src/lib/util.cc:562
 msgid "Centre"
 msgstr "Centro"
 
@@ -476,7 +483,7 @@ msgstr ""
 msgid "Computing digest"
 msgstr "Calculando la firma resumen"
 
-#: src/lib/writer.cc:535
+#: src/lib/writer.cc:531
 msgid "Computing digests"
 msgstr "Calculando la firma resumen"
 
@@ -505,23 +512,23 @@ msgstr "Para unir contenido deben tener subtítulos todos o ninguno"
 msgid "Content to be joined must all have or not have video"
 msgstr "Para unir contenido deben tener vídeo todos o ninguno"
 
-#: src/lib/text_content.cc:305
+#: src/lib/text_content.cc:320
 #, fuzzy
 msgid ""
 "Content to be joined must both be main subtitle languages or both additional."
 msgstr ""
 "Para unir contenido debe tener la misma separación de línea de subtítulos."
 
-#: src/lib/video_content.cc:207
+#: src/lib/video_content.cc:210
 #, fuzzy
 msgid "Content to be joined must have all its video used or not used."
 msgstr "Para unir contenido debe tener la misma velocidad de imagen"
 
-#: src/lib/text_content.cc:260
+#: src/lib/text_content.cc:275
 msgid "Content to be joined must have the same 'burn subtitles' setting."
 msgstr "Para unir contenido debe tener la misma opción ‘grabar subtítulos’."
 
-#: src/lib/text_content.cc:256
+#: src/lib/text_content.cc:271
 msgid "Content to be joined must have the same 'use subtitles' setting."
 msgstr "Para unir contenido debe tener la misma opción 'usar subtítulos'."
 
@@ -533,65 +540,65 @@ msgstr "Para unir contenido debe tener el mismo retardo de audio."
 msgid "Content to be joined must have the same audio gain."
 msgstr "Para unir contenido debe tener la misma ganancia de audio."
 
-#: src/lib/video_content.cc:239
+#: src/lib/video_content.cc:242
 #, fuzzy
 msgid "Content to be joined must have the same burnt subtitle language."
 msgstr "Para unir contenido debe tener la misma opción ‘grabar subtítulos’."
 
-#: src/lib/video_content.cc:231
+#: src/lib/video_content.cc:234
 msgid "Content to be joined must have the same colour conversion."
 msgstr "Para unir contenido debe tener la misma conversión de color."
 
-#: src/lib/video_content.cc:219
+#: src/lib/video_content.cc:222
 msgid "Content to be joined must have the same crop."
 msgstr "Para unir contenido debe tener el mismo recorte."
 
-#: src/lib/video_content.cc:223
+#: src/lib/video_content.cc:226
 #, fuzzy
 msgid "Content to be joined must have the same custom ratio setting."
 msgstr "Para unir contenido debe tener la misma redimensión."
 
-#: src/lib/video_content.cc:227
+#: src/lib/video_content.cc:230
 #, fuzzy
 msgid "Content to be joined must have the same custom size setting."
 msgstr "Para unir contenido debe tener la misma redimensión."
 
-#: src/lib/video_content.cc:235
+#: src/lib/video_content.cc:238
 msgid "Content to be joined must have the same fades."
 msgstr "Para unir contenido debe tener los mismos fundidos."
 
-#: src/lib/text_content.cc:288
+#: src/lib/text_content.cc:303
 msgid "Content to be joined must have the same outline width."
 msgstr "Para unir contenido debe tener la misma anchura de contorno."
 
-#: src/lib/video_content.cc:211
+#: src/lib/video_content.cc:214
 msgid "Content to be joined must have the same picture size."
 msgstr "Para unir contenido debe tener el mismo tamaño de imagen."
 
-#: src/lib/text_content.cc:264
+#: src/lib/text_content.cc:279
 msgid "Content to be joined must have the same subtitle X offset."
 msgstr ""
 "Para unir contenido debe tener el mismo desplazamiento de subtítulo en X."
 
-#: src/lib/text_content.cc:272
+#: src/lib/text_content.cc:287
 msgid "Content to be joined must have the same subtitle X scale."
 msgstr ""
 "Para unir contenido debe tener la misma redimensión de subtítulo en  X."
 
-#: src/lib/text_content.cc:268
+#: src/lib/text_content.cc:283
 msgid "Content to be joined must have the same subtitle Y offset."
 msgstr ""
 "Para unir contenido debe tener el mismo desplazamiento de subtítulo en Y."
 
-#: src/lib/text_content.cc:276
+#: src/lib/text_content.cc:291
 msgid "Content to be joined must have the same subtitle Y scale."
 msgstr "Para unir contenido debe tener la misma redimensión de subtítulo en Y."
 
-#: src/lib/text_content.cc:284
+#: src/lib/text_content.cc:299
 msgid "Content to be joined must have the same subtitle fades."
 msgstr "Para unir contenido debe tener el mismo fundido de subtítulos."
 
-#: src/lib/text_content.cc:280
+#: src/lib/text_content.cc:295
 msgid "Content to be joined must have the same subtitle line spacing."
 msgstr ""
 "Para unir contenido debe tener la misma separación de línea de subtítulos."
@@ -600,16 +607,16 @@ msgstr ""
 msgid "Content to be joined must have the same video frame rate"
 msgstr "Para unir contenido debe tener la misma velocidad de imagen"
 
-#: src/lib/video_content.cc:215
+#: src/lib/video_content.cc:218
 msgid "Content to be joined must have the same video frame type."
 msgstr "Para unir contenido debe tener el mismo tamaño de imagen."
 
-#: src/lib/text_content.cc:297
+#: src/lib/text_content.cc:312
 #, fuzzy
 msgid "Content to be joined must use the same DCP track."
 msgstr "Para unir contenido debe usar la misma fuente."
 
-#: src/lib/text_content.cc:293 src/lib/text_content.cc:313
+#: src/lib/text_content.cc:308 src/lib/text_content.cc:328
 msgid "Content to be joined must use the same fonts."
 msgstr "Para unir contenido debe usar la misma fuente."
 
@@ -617,12 +624,12 @@ msgstr "Para unir contenido debe usar la misma fuente."
 msgid "Content to be joined must use the same subtitle stream."
 msgstr "Para unir contenido debe tener el mismo tipo de subtítulos."
 
-#: src/lib/text_content.cc:301
+#: src/lib/text_content.cc:316
 #, fuzzy
 msgid "Content to be joined must use the same text language."
 msgstr "Para unir contenido debe usar la misma fuente."
 
-#: src/lib/video_content.cc:430
+#: src/lib/video_content.cc:438
 msgid "Content video is %1x%2"
 msgstr "El video es %1x%2"
 
@@ -647,7 +654,7 @@ msgstr "No se pudo conectar al servidor %1 (%2)"
 msgid "Could not create remote directory %1 (%2)"
 msgstr "No se pudo crear la carpeta remota %1 (%2)"
 
-#: src/lib/image_examiner.cc:65
+#: src/lib/image_examiner.cc:64
 msgid "Could not decode JPEG2000 file %1 (%2)"
 msgstr "No se pudo descodificar el fichero JPEG2000 %1 (%2)"
 
@@ -686,7 +693,7 @@ msgstr "No se puedo abrir el fichero ZIP descargado"
 msgid "Could not open file for writing"
 msgstr "no se pudo abrir el fichero %1 para escritura (%2)"
 
-#: src/lib/ffmpeg_file_encoder.cc:269
+#: src/lib/ffmpeg_file_encoder.cc:265
 #, fuzzy
 msgid "Could not open output file %1 (%2)"
 msgstr "no se pudo escribir en el fichero %1 (%2)"
@@ -703,19 +710,19 @@ msgstr "No se pudo iniciar la transferencia"
 msgid "Could not write to remote file (%1)"
 msgstr "No se pudo escribir el fichero remoto (%1)"
 
-#: src/lib/util.cc:569
+#: src/lib/util.cc:572
 msgid "D-BOX primary"
 msgstr "Primario D-BOX"
 
-#: src/lib/util.cc:570
+#: src/lib/util.cc:573
 msgid "D-BOX secondary"
 msgstr "Secundario D-BOX"
 
-#: src/lib/util.cc:600
+#: src/lib/util.cc:603
 msgid "DBP"
 msgstr "DBP"
 
-#: src/lib/util.cc:601
+#: src/lib/util.cc:604
 msgid "DBS"
 msgstr "DBS"
 
@@ -727,7 +734,7 @@ msgstr "Flat DCI"
 msgid "DCI Scope"
 msgstr "Scope DCI"
 
-#: src/lib/dcp_subtitle_content.cc:103
+#: src/lib/dcp_subtitle_content.cc:104
 msgid "DCP XML subtitles"
 msgstr "Subtítulos DCP XML"
 
@@ -752,13 +759,13 @@ msgstr ""
 "DCP-o-matic no pudo abrir el fichero %1 (%2). Quizás no existe o está en un "
 "formato inesperado."
 
-#: src/lib/film.cc:1565
+#: src/lib/film.cc:1614
 msgid ""
 "DCP-o-matic had to change your settings for referring to DCPs as OV.  Please "
 "review those settings to make sure they are what you want."
 msgstr ""
 
-#: src/lib/film.cc:1533
+#: src/lib/film.cc:1582
 msgid ""
 "DCP-o-matic had to change your settings so that the film's frame rate is the "
 "same as that of your Atmos content."
@@ -769,7 +776,7 @@ msgid ""
 "DCP-o-matic no longer supports the `%1' filter, so it has been turned off."
 msgstr "DCP-o-matic ya no ofrece el filtro `%1', así que ha sido desactivado."
 
-#: src/lib/config.cc:359 src/lib/config.cc:1114
+#: src/lib/config.cc:357 src/lib/config.cc:1114
 msgid "DCP-o-matic notification"
 msgstr ""
 
@@ -863,7 +870,7 @@ msgstr "Error en el fichero de subtítulos: encontrado %1 cuando se esperaba %2"
 msgid "Error: %1"
 msgstr "Error: %1"
 
-#: src/lib/hints.cc:408
+#: src/lib/hints.cc:405
 #, fuzzy
 msgid "Examining audio, subtitles and closed captions"
 msgstr "Examinar contenido"
@@ -878,7 +885,7 @@ msgstr "Examinar contenido"
 msgid "Examining subtitles"
 msgstr "Buscando subtítulos"
 
-#: src/lib/hints.cc:406
+#: src/lib/hints.cc:403
 #, fuzzy
 msgid "Examining subtitles and closed captions"
 msgstr "Examinar contenido"
@@ -910,7 +917,7 @@ msgstr "Error al enviar el correo electrónico (%1)"
 msgid "Feature"
 msgstr "Película"
 
-#: src/lib/content.cc:464
+#: src/lib/content.cc:468
 msgid "Filename"
 msgstr "Nombre de fichero"
 
@@ -922,11 +929,11 @@ msgstr "Película"
 msgid "Finding length"
 msgstr "Buscando la duración"
 
-#: src/lib/content.cc:471
+#: src/lib/content.cc:475
 msgid "Frame rate"
 msgstr "Velocidad"
 
-#: src/lib/util.cc:943
+#: src/lib/util.cc:946
 msgid "Friday"
 msgstr "Viernes"
 
@@ -970,11 +977,11 @@ msgstr "Gamma 28 (BT470BG)"
 msgid "Gradient debander"
 msgstr "Gradient debander"
 
-#: src/lib/util.cc:594
+#: src/lib/util.cc:597
 msgid "HI"
 msgstr "HI"
 
-#: src/lib/util.cc:563
+#: src/lib/util.cc:566
 msgid "Hearing impaired"
 msgstr "Sordos"
 
@@ -999,18 +1006,18 @@ msgstr "IEC61966-2-1 (sRGB o sYCC)"
 msgid "IEC61966-2-4"
 msgstr "IEC61966-2-4"
 
-#: src/lib/hints.cc:188
+#: src/lib/hints.cc:185
 msgid "If you do use 25fps you should change your DCP standard to SMPTE."
 msgstr ""
 
-#: src/lib/hints.cc:251
+#: src/lib/hints.cc:248
 msgid ""
 "In general it is now advisable to make SMPTE DCPs unless you have a "
 "particular reason to use Interop.  You are advised to set your DCP to use "
 "the SMPTE standard in the \"DCP\" tab."
 msgstr ""
 
-#: src/lib/hints.cc:573
+#: src/lib/hints.cc:570
 msgid ""
 "It is advisable to put your first subtitle at least 4 seconds after the "
 "start of the DCP to make sure it is seen."
@@ -1024,7 +1031,7 @@ msgstr "Error desconocido."
 msgid "JEDEC P22"
 msgstr ""
 
-#: src/lib/config.cc:349 src/lib/config.cc:1099
+#: src/lib/config.cc:347 src/lib/config.cc:1099
 msgid "KDM delivery: $CPL_NAME"
 msgstr "Envío de KDM: $CPL_NAME"
 
@@ -1032,39 +1039,39 @@ msgstr "Envío de KDM: $CPL_NAME"
 msgid "Kernel deinterlacer"
 msgstr "Kernel deinterlacer"
 
-#: src/lib/ffmpeg_encoder.cc:251 src/lib/util.cc:588
+#: src/lib/ffmpeg_encoder.cc:253 src/lib/util.cc:591
 msgid "L"
 msgstr "L"
 
-#: src/lib/util.cc:596
+#: src/lib/util.cc:599
 msgid "Lc"
 msgstr "Lc"
 
-#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:557
+#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:560
 msgid "Left"
 msgstr "Izquierda"
 
-#: src/lib/util.cc:565
+#: src/lib/util.cc:568
 msgid "Left centre"
 msgstr "Centro izquierda"
 
-#: src/lib/util.cc:567
+#: src/lib/util.cc:570
 msgid "Left rear surround"
 msgstr "Surround trasero izquierda"
 
-#: src/lib/util.cc:561
+#: src/lib/util.cc:564
 msgid "Left surround"
 msgstr "Surround izquierda"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "Length"
 msgstr "Duración"
 
-#: src/lib/util.cc:591
+#: src/lib/util.cc:594
 msgid "Lfe"
 msgstr "Lfe"
 
-#: src/lib/util.cc:560
+#: src/lib/util.cc:563
 msgid "Lfe (sub)"
 msgstr "Lfe (bajos)"
 
@@ -1088,11 +1095,11 @@ msgstr "Logarítmico (rango 100:1)"
 msgid "Logarithmic (316:1 range)"
 msgstr "Logarítmico (rango 316:1)"
 
-#: src/lib/exceptions.cc:145
+#: src/lib/exceptions.cc:152
 msgid "Lost communication between main and writer processes"
 msgstr ""
 
-#: src/lib/util.cc:592
+#: src/lib/util.cc:595
 msgid "Ls"
 msgstr "Ls"
 
@@ -1104,19 +1111,19 @@ msgstr "Decodificación medio-lateral"
 msgid "Misc"
 msgstr "Miscelánea"
 
-#: src/lib/dcp_examiner.cc:164
+#: src/lib/dcp_examiner.cc:175
 msgid "Mismatched audio channel counts in DCP"
 msgstr "El número de canales de audio no coincide en el DCP"
 
-#: src/lib/dcp_examiner.cc:170
+#: src/lib/dcp_examiner.cc:181
 msgid "Mismatched audio sample rates in DCP"
 msgstr "La velocidad de reproducción de audio no coincide en el DCP"
 
-#: src/lib/dcp_examiner.cc:137
+#: src/lib/dcp_examiner.cc:145
 msgid "Mismatched frame rates in DCP"
 msgstr "La velocidad de reproducción no coincide en el DCP"
 
-#: src/lib/dcp_examiner.cc:145
+#: src/lib/dcp_examiner.cc:153
 msgid "Mismatched video sizes in DCP"
 msgstr "El tamaño de los vídeos no coincide en el DCP"
 
@@ -1125,11 +1132,11 @@ msgstr "El tamaño de los vídeos no coincide en el DCP"
 msgid "Missing required setting %1"
 msgstr "falta una configuración obligatoria %1"
 
-#: src/lib/util.cc:935
+#: src/lib/util.cc:938
 msgid "Monday"
 msgstr "Lunes"
 
-#: src/lib/writer.cc:763
+#: src/lib/writer.cc:759
 msgid "Mono"
 msgstr "Mono"
 
@@ -1153,7 +1160,7 @@ msgstr "No se encontraron imágenes válidas en la carpeta."
 msgid "Noise reduction"
 msgstr "Reducción de ruido"
 
-#: src/lib/writer.cc:731 src/lib/writer.cc:738 src/lib/writer.cc:761
+#: src/lib/writer.cc:727 src/lib/writer.cc:734 src/lib/writer.cc:757
 msgid "None"
 msgstr "Ninguno"
 
@@ -1192,7 +1199,7 @@ msgstr "Overcomplete wavelet denoiser"
 msgid "P3"
 msgstr "P3"
 
-#: src/lib/util.h:59
+#: src/lib/util.h:64
 msgid ""
 "Please report this problem by using Help -> Report a problem or via email to "
 "carl@dcpomatic.com"
@@ -1202,7 +1209,7 @@ msgstr ""
 msgid "Policy"
 msgstr "Policy"
 
-#: src/lib/content.cc:480
+#: src/lib/content.cc:484
 msgid "Prepared for video frame rate"
 msgstr "Preparado para velocidad de vídeo"
 
@@ -1218,7 +1225,7 @@ msgstr ""
 msgid "Public Service Announcement"
 msgstr "Anuncio de servicio público"
 
-#: src/lib/ffmpeg_encoder.cc:256 src/lib/util.cc:589
+#: src/lib/ffmpeg_encoder.cc:258 src/lib/util.cc:592
 msgid "R"
 msgstr "R"
 
@@ -1230,7 +1237,7 @@ msgstr "RGB / sRGB (IEC61966-2-1)"
 msgid "Rating"
 msgstr "Clasificación"
 
-#: src/lib/util.cc:597
+#: src/lib/util.cc:600
 msgid "Rc"
 msgstr "Rc"
 
@@ -1250,19 +1257,19 @@ msgstr "Rec. 601"
 msgid "Rec. 709"
 msgstr "Rec. 709"
 
-#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:558
+#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:561
 msgid "Right"
 msgstr "Derecha"
 
-#: src/lib/util.cc:566
+#: src/lib/util.cc:569
 msgid "Right centre"
 msgstr "Centro derecha"
 
-#: src/lib/util.cc:568
+#: src/lib/util.cc:571
 msgid "Right rear surround"
 msgstr "Surround trasero derecha"
 
-#: src/lib/util.cc:562
+#: src/lib/util.cc:565
 msgid "Right surround"
 msgstr "Surround derecha"
 
@@ -1274,7 +1281,7 @@ msgstr ""
 msgid "Rotate 90 degrees clockwise"
 msgstr ""
 
-#: src/lib/util.cc:593
+#: src/lib/util.cc:596
 msgid "Rs"
 msgstr "Rs"
 
@@ -1299,7 +1306,7 @@ msgstr "SMPTE 2085, Y’D’zD’x"
 msgid "SMPTE 240M"
 msgstr "SMPTE 240M"
 
-#: src/lib/hints.cc:615
+#: src/lib/hints.cc:612
 msgid ""
 "SMPTE DCPs with the type FTR (feature) should have markers for the first "
 "frame of end credits (FFEC) and the first frame of moving credits (FFMC).  "
@@ -1337,7 +1344,7 @@ msgstr "Error SSH (%1)"
 msgid "SSH error [%1] (%2)"
 msgstr "Error SSH (%1)"
 
-#: src/lib/util.cc:945
+#: src/lib/util.cc:948
 msgid "Saturday"
 msgstr "Sábado"
 
@@ -1353,11 +1360,11 @@ msgstr "Enviando correo"
 msgid "Short"
 msgstr "Cortometraje"
 
-#: src/lib/util.cc:602
+#: src/lib/util.cc:605
 msgid "Sign"
 msgstr ""
 
-#: src/lib/video_content.cc:500
+#: src/lib/video_content.cc:510
 msgid "Size"
 msgstr "Tamaño"
 
@@ -1378,30 +1385,30 @@ msgid ""
 "project in DCP-o-matic, check the settings, then save it before trying again."
 msgstr ""
 
-#: src/lib/hints.cc:554
+#: src/lib/hints.cc:551
 msgid ""
 "Some of your closed captions span more than %1 lines, so they will be "
 "truncated."
 msgstr ""
 
-#: src/lib/hints.cc:653
+#: src/lib/hints.cc:650
 msgid ""
 "Some of your content has audio but you have not set the audio language.  It "
 "is advisable to set the audio language in the \"DCP\" tab unless your audio "
 "has no spoken parts."
 msgstr ""
 
-#: src/lib/film.cc:406
+#: src/lib/film.cc:417
 #, fuzzy
 msgid "Some of your content needs a KDM"
 msgstr "parte de su contenido necesita una KDM"
 
-#: src/lib/film.cc:409
+#: src/lib/film.cc:420
 #, fuzzy
 msgid "Some of your content needs an OV"
 msgstr "parte de su contenido necesita una OV"
 
-#: src/lib/writer.cc:765
+#: src/lib/writer.cc:761
 msgid "Stereo"
 msgstr "Estéreo"
 
@@ -1413,7 +1420,7 @@ msgstr "Upmix de estéreo a 5.1 A"
 msgid "Stereo to 5.1 up-mixer B"
 msgstr "Upmix B de estéreo a 5.1"
 
-#: src/lib/util.cc:933
+#: src/lib/util.cc:936
 msgid "Sunday"
 msgstr "Domingo"
 
@@ -1433,7 +1440,7 @@ msgstr "Test"
 msgid "Text subtitles"
 msgstr "Subtítulos de texto"
 
-#: src/lib/film.cc:389
+#: src/lib/film.cc:400
 msgid "The DCP is empty, perhaps because all the content has zero length."
 msgstr ""
 
@@ -1445,7 +1452,7 @@ msgstr "La cadena de certificados para firmar no es válida"
 msgid "The certificate chain for signing is invalid (%1)"
 msgstr "La cadena de certificados para firmar no es válida (%1)"
 
-#: src/lib/video_decoder.cc:86
+#: src/lib/video_decoder.cc:81
 msgid ""
 "The content file %1 is set as 3D but does not appear to contain 3D images.  "
 "Please set it to 2D.  You can still make a 3D DCP from this content by "
@@ -1476,7 +1483,7 @@ msgstr "El fichero %1 ha sido recortado en %2 milisegundos."
 msgid "The file %1 has been trimmed by %2 milliseconds more."
 msgstr "El fichero %1 ha sido alargado con %2 milisegundos."
 
-#: src/lib/hints.cc:241
+#: src/lib/hints.cc:238
 msgid ""
 "There is a large difference between the frame rate of your DCP and that of "
 "some of your content.  This will cause your audio to play back at a much "
@@ -1485,7 +1492,7 @@ msgid ""
 "systems support your chosen DCP rate."
 msgstr ""
 
-#: src/lib/dcp_content.cc:657
+#: src/lib/dcp_content.cc:659
 msgid "There is no video in this DCP"
 msgstr ""
 
@@ -1499,11 +1506,11 @@ msgstr ""
 "sistema operativo de 32 bits, trate de reducir el número de hilos de "
 "codificación en la sección General de las preferencias."
 
-#: src/lib/util.cc:1146
+#: src/lib/util.cc:1150
 msgid "This KDM was made for DCP-o-matic but not for its leaf certificate."
 msgstr ""
 
-#: src/lib/util.cc:1144
+#: src/lib/util.cc:1148
 msgid "This KDM was not made for DCP-o-matic's decryption certificate."
 msgstr ""
 
@@ -1530,7 +1537,7 @@ msgstr ""
 "Este fichero es una KDM. Las KDM pueden añadirse al DCP pinchando con el "
 "botón derecho sobre el contenido y eligiendo “Añadir KDM”"
 
-#: src/lib/film.cc:581
+#: src/lib/film.cc:595
 msgid ""
 "This film was created with a newer version of DCP-o-matic, and it cannot be "
 "loaded into this version.  Sorry!"
@@ -1539,7 +1546,7 @@ msgstr ""
 "desgraciadamente no s puede cargar. Necesitas crear una nueva película, "
 "volver a añadir y configurar ton contenido. ¡Lo siento!"
 
-#: src/lib/film.cc:566
+#: src/lib/film.cc:580
 msgid ""
 "This film was created with an older version of DCP-o-matic, and "
 "unfortunately it cannot be loaded into this version.  You will need to "
@@ -1549,7 +1556,7 @@ msgstr ""
 "desgraciadamente no s puede cargar. Necesitas crear una nueva película, "
 "volver a añadir y configurar ton contenido. ¡Lo siento!"
 
-#: src/lib/util.cc:941
+#: src/lib/util.cc:944
 msgid "Thursday"
 msgstr "Jueves"
 
@@ -1570,7 +1577,7 @@ msgstr "Codificar %1"
 msgid "Transitional"
 msgstr "Transitional"
 
-#: src/lib/util.cc:937
+#: src/lib/util.cc:940
 msgid "Tuesday"
 msgstr "Martes"
 
@@ -1595,7 +1602,7 @@ msgstr "desconocido"
 msgid "Unknown error"
 msgstr "Error desconocido"
 
-#: src/lib/ffmpeg_decoder.cc:343
+#: src/lib/ffmpeg_decoder.cc:339
 msgid "Unrecognised audio sample format (%1)"
 msgstr "Formato de audio desconocido (%1)"
 
@@ -1615,7 +1622,7 @@ msgstr "Sin especificar"
 msgid "Untitled"
 msgstr "Sin título"
 
-#: src/lib/util.cc:571 src/lib/util.cc:572
+#: src/lib/util.cc:574 src/lib/util.cc:575
 msgid "Unused"
 msgstr "Sin uso"
 
@@ -1627,7 +1634,7 @@ msgstr "Upmix L"
 msgid "Upmix R"
 msgstr "Upmix R"
 
-#: src/lib/util.cc:595
+#: src/lib/util.cc:598
 msgid "VI"
 msgstr "VI"
 
@@ -1639,7 +1646,7 @@ msgstr ""
 msgid "Vertical flip"
 msgstr ""
 
-#: src/lib/util.cc:564
+#: src/lib/util.cc:567
 msgid "Visually impaired"
 msgstr "Ciegos"
 
@@ -1652,7 +1659,7 @@ msgstr "Esperando"
 msgid "Weave filter"
 msgstr "Filtro telecine"
 
-#: src/lib/util.cc:939
+#: src/lib/util.cc:942
 msgid "Wednesday"
 msgstr "Miércoles"
 
@@ -1664,7 +1671,7 @@ msgstr "YCOCG"
 msgid "Yet Another Deinterlacing Filter"
 msgstr "Yet Another Deinterlacing Filter"
 
-#: src/lib/hints.cc:201
+#: src/lib/hints.cc:198
 #, fuzzy
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
@@ -1674,7 +1681,7 @@ msgstr ""
 "Intenta hacer un DCP Interop con una velocidad que no está permitida "
 "oficialmente. Le recomendamos hacer un DCP SMPTE en su lugar."
 
-#: src/lib/hints.cc:185
+#: src/lib/hints.cc:182
 #, fuzzy
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
@@ -1684,7 +1691,7 @@ msgstr ""
 "Intenta hacer un DCP Interop con una velocidad que no está permitida "
 "oficialmente. Le recomendamos hacer un DCP SMPTE en su lugar."
 
-#: src/lib/hints.cc:195
+#: src/lib/hints.cc:192
 #, fuzzy
 msgid ""
 "You are set up for a DCP frame rate of 30fps, which is not supported by all "
@@ -1693,7 +1700,7 @@ msgstr ""
 "Intenta hacer un DCP Interop con una velocidad que no está permitida "
 "oficialmente. Le recomendamos hacer un DCP SMPTE en su lugar."
 
-#: src/lib/hints.cc:306
+#: src/lib/hints.cc:303
 msgid ""
 "You are using 3D content but your DCP is set to 2D.  Set the DCP to 3D if "
 "you want to play it back on a 3D system (e.g. Real-D, MasterImage etc.)"
@@ -1701,14 +1708,14 @@ msgstr ""
 "Estás usando contenido 3D pero el DCP es 2D. Cambia el DCP a 3D si quieres "
 "que funcione en un sistema 3D (ej.: Real-D, MasterImage, etc.)"
 
-#: src/lib/hints.cc:122
+#: src/lib/hints.cc:119
 msgid ""
 "You are using DCP-o-matic's stereo-to-5.1 upmixer.  This is experimental and "
 "may result in poor-quality audio.  If you continue, you should listen to the "
 "resulting DCP in a cinema to make sure that it sounds good."
 msgstr ""
 
-#: src/lib/hints.cc:290
+#: src/lib/hints.cc:287
 msgid ""
 "You have %1 files that look like they are VOB files from DVD. You should "
 "join them to ensure smooth joins between the files."
@@ -1716,19 +1723,19 @@ msgstr ""
 "Hay %1 ficheros que parecen VOBs de un DVD. Deberías unirlos para asegurarte "
 "transiciones suaves."
 
-#: src/lib/film.cc:1529
+#: src/lib/film.cc:1578
 msgid ""
 "You have more than one piece of Atmos content, and they do not have the same "
 "frame rate.  You must remove some Atmos content."
 msgstr ""
 
-#: src/lib/hints.cc:561
+#: src/lib/hints.cc:558
 msgid ""
 "You have overlapping closed captions, which are not allowed in Interop "
 "DCPs.  Change your DCP standard to SMPTE."
 msgstr ""
 
-#: src/lib/hints.cc:274
+#: src/lib/hints.cc:271
 msgid ""
 "You have specified a font file which is larger than 640kB.  This is very "
 "likely to cause problems on playback."
@@ -1736,12 +1743,12 @@ msgstr ""
 "Has seleccionado una fuente de más de 640 Kb. Es muy posible que cause "
 "problemas en la reproducción."
 
-#: src/lib/film.cc:385
+#: src/lib/film.cc:396
 #, fuzzy
 msgid "You must add some content to the DCP before creating it"
 msgstr "tiene que añadir contenido al DCP antes de crearlo"
 
-#: src/lib/hints.cc:112
+#: src/lib/hints.cc:109
 msgid ""
 "Your DCP has fewer than 6 audio channels.  This may cause problems on some "
 "projectors.  You may want to set the DCP to have 6 channels.  It does not "
@@ -1749,7 +1756,7 @@ msgid ""
 "extras with silence."
 msgstr ""
 
-#: src/lib/hints.cc:160
+#: src/lib/hints.cc:157
 #, fuzzy
 msgid ""
 "Your DCP uses an unusual container ratio.  This may cause problems on some "
@@ -1758,7 +1765,7 @@ msgstr ""
 "El DCP utiliza un contenedor inusual.  Esto puede causar problemas en "
 "algunos proyectores.  Si es posible, utilice Flat o Scope como contenedor"
 
-#: src/lib/hints.cc:340
+#: src/lib/hints.cc:337
 msgid ""
 "Your audio level is very high (on %1).  You should reduce the gain of your "
 "audio content."
@@ -1766,7 +1773,7 @@ msgstr ""
 "El nivel de sonido es muy alto (en %1). Deberías reducir la ganancia del "
 "audio."
 
-#: src/lib/config.cc:289
+#: src/lib/config.cc:287
 msgid ""
 "Your default container is not valid and has been changed to Flat (1.85:1)"
 msgstr ""
@@ -1791,7 +1798,7 @@ msgstr "[imágenes en movimiento]"
 msgid "[still]"
 msgstr "[imagen fija]"
 
-#: src/lib/dcp_subtitle_content.cc:97 src/lib/string_text_file_content.cc:78
+#: src/lib/dcp_subtitle_content.cc:98 src/lib/string_text_file_content.cc:78
 msgid "[subtitles]"
 msgstr "[subtítulos]"
 
@@ -1809,11 +1816,11 @@ msgstr "tiempo de conexión agotado"
 msgid "connecting"
 msgstr "conectando"
 
-#: src/lib/film.cc:381
+#: src/lib/film.cc:392
 msgid "container"
 msgstr "continente"
 
-#: src/lib/film.cc:393
+#: src/lib/film.cc:404
 msgid "content type"
 msgstr "tipo de contenido"
 
@@ -1869,89 +1876,89 @@ msgstr "error durante async_read (%1)"
 msgid "error during async_write (%1)"
 msgstr "error durante async_write (%1)"
 
-#: src/lib/content.cc:473 src/lib/content.cc:482
+#: src/lib/content.cc:477 src/lib/content.cc:486
 msgid "frames per second"
 msgstr "imágenes por segundo"
 
 #. / TRANSLATORS: h here is an abbreviation for hours
-#: src/lib/util.cc:200
+#: src/lib/util.cc:203
 msgid "h"
 msgstr "h"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:750
+#: src/lib/dcp_content.cc:752
 #, fuzzy
 msgid "it does not have closed captions in all its reels."
 msgstr "El DCP no tiene sonido en todas las bobinas."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:739
+#: src/lib/dcp_content.cc:741
 #, fuzzy
 msgid "it does not have open subtitles in all its reels."
 msgstr "El DCP no tiene subtítulos en todas las bobinas."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:706
+#: src/lib/dcp_content.cc:708
 #, fuzzy
 msgid "it does not have sound in all its reels."
 msgstr "El DCP no tiene sonido en todas las bobinas."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:610
+#: src/lib/dcp_content.cc:612
 #, fuzzy
 msgid "it has a different frame rate to the film."
 msgstr "La película tiene una velocidad diferente a este DCP."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:765
+#: src/lib/dcp_content.cc:767
 msgid ""
 "it has a start trim so its subtitles or closed captions must be re-written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:667
+#: src/lib/dcp_content.cc:669
 #, fuzzy
 msgid "it is 2K and the film is 4K."
 msgstr "La película es Interop y este DCP es SMPTE."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:664
+#: src/lib/dcp_content.cc:666
 #, fuzzy
 msgid "it is 4K and the film is 2K."
 msgstr "La película es Interop y este DCP es SMPTE."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:598
+#: src/lib/dcp_content.cc:600
 #, fuzzy
 msgid "it is Interop and the film is set to SMPTE."
 msgstr "La película es Interop y este DCP es SMPTE."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:602
+#: src/lib/dcp_content.cc:604
 #, fuzzy
 msgid "it is SMPTE and the film is set to Interop."
 msgstr "La película es SMPTE y este DCP es Interop."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:712
+#: src/lib/dcp_content.cc:714
 #, fuzzy
 msgid "it overlaps other audio content; remove the other content."
 msgstr "Hay otro contenido de audio superpuesto a este DCP; elimínelo."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:770
+#: src/lib/dcp_content.cc:772
 #, fuzzy
 msgid "it overlaps other text content; remove the other content."
 msgstr "Hay otro contenido de vídeo superpuesto a este DCP; elimínelo."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:677
+#: src/lib/dcp_content.cc:679
 #, fuzzy
 msgid "it overlaps other video content; remove the other content."
 msgstr "Hay otro contenido de vídeo superpuesto a este DCP; elimínelo."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:633
+#: src/lib/dcp_content.cc:635
 #, fuzzy
 msgid ""
 "its reel lengths differ from those in the film; set the reel mode to 'split "
@@ -1961,13 +1968,13 @@ msgstr ""
 "seleccione el modo de bobinas ‘dividir por contenido’."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:672
+#: src/lib/dcp_content.cc:674
 #, fuzzy
 msgid "its video frame size differs from the film's."
 msgstr "El tamaño de imagen de vídeo en la película es diferente en el DCP."
 
 #. / TRANSLATORS: m here is an abbreviation for minutes
-#: src/lib/util.cc:209
+#: src/lib/util.cc:212
 msgid "m"
 msgstr "m"
 
@@ -1975,26 +1982,26 @@ msgstr "m"
 msgid "moving"
 msgstr "moviendo"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "name"
 msgstr "nombre"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:756
+#: src/lib/dcp_content.cc:758
 msgid ""
 "one of its closed caption has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:743
+#: src/lib/dcp_content.cc:745
 msgid ""
 "one of its subtitle reels has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: s here is an abbreviation for seconds
-#: src/lib/util.cc:219
+#: src/lib/util.cc:222
 msgid "s"
 msgstr "s"
 
@@ -2002,7 +2009,7 @@ msgstr "s"
 msgid "sRGB"
 msgstr "sRGB"
 
-#: src/lib/film.cc:402
+#: src/lib/film.cc:413
 msgid "some of your content is missing"
 msgstr "falta parte de su contenido"
 
@@ -2014,7 +2021,7 @@ msgstr "imagen fija"
 msgid "unknown"
 msgstr "desconocido"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "video frames"
 msgstr "fotogramas"
 
diff --git a/src/lib/po/fr_FR.po b/src/lib/po/fr_FR.po
index be2d3c551..2f8c028e9 100644
--- a/src/lib/po/fr_FR.po
+++ b/src/lib/po/fr_FR.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: DCP-o-matic FRENCH\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-08-20 23:10+0200\n"
+"POT-Creation-Date: 2021-10-17 15:26+0200\n"
 "PO-Revision-Date: 2019-05-07 14:28+0100\n"
 "Last-Translator: Grégoire AUSINA <gregoire@gisele-productions.eu>\n"
 "Language-Team: \n"
@@ -17,7 +17,7 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "X-Generator: Poedit 1.6.3\n"
 
-#: src/lib/video_content.cc:486
+#: src/lib/video_content.cc:496
 #, c-format
 msgid ""
 "\n"
@@ -26,7 +26,7 @@ msgstr ""
 "\n"
 "Vitesse de défilement du contenu %.4f\n"
 
-#: src/lib/video_content.cc:451
+#: src/lib/video_content.cc:461
 msgid ""
 "\n"
 "Cropped to %1x%2"
@@ -34,7 +34,7 @@ msgstr ""
 "\n"
 "Rogné à %1x%2"
 
-#: src/lib/video_content.cc:444
+#: src/lib/video_content.cc:452
 #, c-format
 msgid ""
 "\n"
@@ -43,7 +43,7 @@ msgstr ""
 "\n"
 "Ratio image %.2f:1"
 
-#: src/lib/video_content.cc:474
+#: src/lib/video_content.cc:484
 msgid ""
 "\n"
 "Padded with black to fit container %1 (%2x%3)"
@@ -51,7 +51,7 @@ msgstr ""
 "\n"
 "Ajout de bandes noires pour remplir le format image cible %1 (%2x%3)"
 
-#: src/lib/video_content.cc:464
+#: src/lib/video_content.cc:474
 msgid ""
 "\n"
 "Scaled to %1x%2"
@@ -59,7 +59,7 @@ msgstr ""
 "\n"
 "Mis à l'échelle à %1x%2"
 
-#: src/lib/video_content.cc:468 src/lib/video_content.cc:479
+#: src/lib/video_content.cc:478 src/lib/video_content.cc:489
 #, c-format
 msgid " (%.2f:1)"
 msgstr " (%.2f:1)"
@@ -104,7 +104,7 @@ msgstr ""
 msgid "%1 [Atmos]"
 msgstr "%1 [Atmos]"
 
-#: src/lib/dcp_content.cc:318
+#: src/lib/dcp_content.cc:320
 msgid "%1 [DCP]"
 msgstr "%1 [DCP]"
 
@@ -120,7 +120,7 @@ msgstr "%1 [film]"
 msgid "%1 [video]"
 msgstr "%1 [vidéo]"
 
-#: src/lib/video_content.cc:439
+#: src/lib/video_content.cc:447
 #, c-format
 msgid ", pixel aspect ratio %.2f:1"
 msgstr ", ratio des pixels %.2f:1"
@@ -169,7 +169,7 @@ msgstr "2.39 (Scope)"
 msgid "3D denoiser"
 msgstr "Débruitage 3D"
 
-#: src/lib/hints.cc:212
+#: src/lib/hints.cc:209
 msgid ""
 "4K 3D is only supported by a very limited number of projectors.  Unless you "
 "know that you will play this DCP back on a capable projector, it is "
@@ -214,7 +214,7 @@ msgstr ""
 "\"https://dcpomatic.com/donate_amount?amount=10\">Aller sur Paypal pour "
 "donner £10</a></ul><p>Merci!"
 
-#: src/lib/hints.cc:169
+#: src/lib/hints.cc:166
 msgid ""
 "A few projectors have problems playing back very high bit-rate DCPs.  It is "
 "a good idea to drop the JPEG2000 bandwidth down to about 200Mbit/s; this is "
@@ -224,6 +224,13 @@ msgstr ""
 "débit. Ce pourrait être une bonne idée d'abaisser la bande passante JPEG2000 "
 "sous les 200Mbit/s. ceci n'aura pas de conséquence visible sur l'image."
 
+#: src/lib/text_content.cc:248
+msgid ""
+"A subtitle or closed caption file in this project is marked with the "
+"language '%1', which DCP-o-matic does not recognise.  The file's language "
+"has been cleared."
+msgstr ""
+
 #: src/lib/ffmpeg_content.cc:635
 msgid "ARIB STD-B67 ('Hybrid log-gamma')"
 msgstr "ARIB STD-B67 ('Hybrid log-gamma')"
@@ -232,7 +239,7 @@ msgstr "ARIB STD-B67 ('Hybrid log-gamma')"
 msgid "Advertisement"
 msgstr "Advertisement"
 
-#: src/lib/hints.cc:146
+#: src/lib/hints.cc:143
 msgid ""
 "All of your content is in Scope (2.39:1) but your DCP's container is Flat "
 "(1.85:1).  This will letter-box your content inside a Flat (1.85:1) frame.  "
@@ -244,7 +251,7 @@ msgstr ""
 "bordures noires en haut et en bas. Vous pourriez préférer choisir le format "
 "Scope (2.39:1) dans l'onglet \"DCP\"."
 
-#: src/lib/hints.cc:150
+#: src/lib/hints.cc:147
 #, fuzzy
 msgid ""
 "All of your content narrower than 1.90:1 but your DCP's container is Scope "
@@ -268,54 +275,54 @@ msgstr "Analyse du son"
 msgid "Analysing subtitles"
 msgstr "Examen des sous-titres"
 
-#: src/lib/hints.cc:368
+#: src/lib/hints.cc:365
 msgid ""
 "At least one marker comes after the end of the project and will be ignored."
 msgstr ""
 
-#: src/lib/hints.cc:473
+#: src/lib/hints.cc:470
 msgid "At least one of your closed caption files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:466
+#: src/lib/hints.cc:463
 msgid "At least one of your closed caption files' XML part is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:481
+#: src/lib/hints.cc:478
 msgid "At least one of your subtitle files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:445
+#: src/lib/hints.cc:442
 msgid ""
 "At least one of your subtitle lines has more than 52 characters.  It is "
 "recommended to make each line 52 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:447
+#: src/lib/hints.cc:444
 msgid ""
 "At least one of your subtitle lines has more than 79 characters.  You should "
 "make each line 79 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:590
+#: src/lib/hints.cc:587
 msgid ""
 "At least one of your subtitles has more than 3 lines.  It is advisable to "
 "use no more than 3 lines."
 msgstr ""
 
-#: src/lib/hints.cc:580
+#: src/lib/hints.cc:577
 msgid ""
 "At least one of your subtitles lasts less than 15 frames.  It is advisable "
 "to make each subtitle at least 15 frames long."
 msgstr ""
 
-#: src/lib/hints.cc:585
+#: src/lib/hints.cc:582
 msgid ""
 "At least one of your subtitles starts less than 2 frames after the previous "
 "one.  It is advisable to make the gap between subtitles at least 2 frames."
 msgstr ""
 
-#: src/lib/hints.cc:633
+#: src/lib/hints.cc:630
 msgid ""
 "At least one piece of subtitle or closed caption content has no specified "
 "language.  It is advisable to set the language for each piece of subtitle or "
@@ -389,15 +396,15 @@ msgstr "bits par pixel"
 msgid "Bob Weaver Deinterlacing Filter"
 msgstr "Un autre filtre de désentrelacement"
 
-#: src/lib/util.cc:598
+#: src/lib/util.cc:601
 msgid "BsL"
 msgstr "BsL"
 
-#: src/lib/util.cc:599
+#: src/lib/util.cc:602
 msgid "BsR"
 msgstr "BsR"
 
-#: src/lib/util.cc:590
+#: src/lib/util.cc:593
 msgid "C"
 msgstr "C"
 
@@ -405,7 +412,7 @@ msgstr "C"
 msgid "Cancelled"
 msgstr "Annulé"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "Cannot contain slashes"
 msgstr "slash non autorisés"
 
@@ -413,11 +420,11 @@ msgstr "slash non autorisés"
 msgid "Cannot handle pixel format %1 during %2"
 msgstr "Format du pixel %1 non géré par %2"
 
-#: src/lib/film.cc:1662
+#: src/lib/film.cc:1711
 msgid "Cannot make a KDM as this project is not encrypted."
 msgstr "Fabrication d'une KDM impossible car ce projet n'est pas crypté."
 
-#: src/lib/util.cc:559
+#: src/lib/util.cc:562
 msgid "Centre"
 msgstr "Centre"
 
@@ -485,7 +492,7 @@ msgstr ""
 msgid "Computing digest"
 msgstr "fabrication rendu"
 
-#: src/lib/writer.cc:535
+#: src/lib/writer.cc:531
 msgid "Computing digests"
 msgstr "sommes de calcul en cours"
 
@@ -515,23 +522,23 @@ msgstr ""
 msgid "Content to be joined must all have or not have video"
 msgstr "Les contenus à ajouter doivent tous avoir ou ne pas avoir de vidéo"
 
-#: src/lib/text_content.cc:305
+#: src/lib/text_content.cc:320
 #, fuzzy
 msgid ""
 "Content to be joined must both be main subtitle languages or both additional."
 msgstr ""
 "Les contenus à ajouter doivent tous avoir le même espacement de lignes."
 
-#: src/lib/video_content.cc:207
+#: src/lib/video_content.cc:210
 #, fuzzy
 msgid "Content to be joined must have all its video used or not used."
 msgstr "Le contenu à ajouter doit avoir la même cadence vidéo."
 
-#: src/lib/text_content.cc:260
+#: src/lib/text_content.cc:275
 msgid "Content to be joined must have the same 'burn subtitles' setting."
 msgstr "Le contenu à ajouter doit avoir le même réglage 'sous-titres gravés'"
 
-#: src/lib/text_content.cc:256
+#: src/lib/text_content.cc:271
 msgid "Content to be joined must have the same 'use subtitles' setting."
 msgstr ""
 "Le contenu à ajouter doit avoir le même réglage 'utiliser les sous-titres'"
@@ -544,72 +551,72 @@ msgstr "Le contenu à ajouter doit présenter le même délais audio"
 msgid "Content to be joined must have the same audio gain."
 msgstr "Le contenu à ajouter doit avoir le même gain audio"
 
-#: src/lib/video_content.cc:239
+#: src/lib/video_content.cc:242
 #, fuzzy
 msgid "Content to be joined must have the same burnt subtitle language."
 msgstr "Le contenu à ajouter doit avoir le même réglage 'sous-titres gravés'"
 
-#: src/lib/video_content.cc:231
+#: src/lib/video_content.cc:234
 msgid "Content to be joined must have the same colour conversion."
 msgstr "Le contenu à ajouter doit avoir le même type de conversion couleur"
 
-#: src/lib/video_content.cc:219
+#: src/lib/video_content.cc:222
 msgid "Content to be joined must have the same crop."
 msgstr "le contenu à ajouter doit avoir les mêmes valeurs de rognage"
 
-#: src/lib/video_content.cc:223
+#: src/lib/video_content.cc:226
 #, fuzzy
 msgid "Content to be joined must have the same custom ratio setting."
 msgstr ""
 "Le contenu à ajouter doit avoir les mêmes paramètres de mise à l'échelle"
 
-#: src/lib/video_content.cc:227
+#: src/lib/video_content.cc:230
 #, fuzzy
 msgid "Content to be joined must have the same custom size setting."
 msgstr ""
 "Le contenu à ajouter doit avoir les mêmes paramètres de mise à l'échelle"
 
-#: src/lib/video_content.cc:235
+#: src/lib/video_content.cc:238
 msgid "Content to be joined must have the same fades."
 msgstr "Le contenu à ajouter doit avoir le même réglage de fondu."
 
-#: src/lib/text_content.cc:288
+#: src/lib/text_content.cc:303
 msgid "Content to be joined must have the same outline width."
 msgstr "Le contenu ajouté doit avoir la même taille de contour."
 
-#: src/lib/video_content.cc:211
+#: src/lib/video_content.cc:214
 msgid "Content to be joined must have the same picture size."
 msgstr "Le contenu à ajouter doit avoir la même taille d'image"
 
-#: src/lib/text_content.cc:264
+#: src/lib/text_content.cc:279
 msgid "Content to be joined must have the same subtitle X offset."
 msgstr ""
 "Le contenu à ajouter doit avoir le même positionnement horizontal des sous-"
 "titres"
 
-#: src/lib/text_content.cc:272
+#: src/lib/text_content.cc:287
 msgid "Content to be joined must have the same subtitle X scale."
 msgstr ""
 "Le contenu à ajouter doit avoir le même réglage d'échelle horizontale de "
 "sous-titres"
 
-#: src/lib/text_content.cc:268
+#: src/lib/text_content.cc:283
 msgid "Content to be joined must have the same subtitle Y offset."
 msgstr ""
 "Le contenu à ajouter doit avoir le même positionnement vertical des sous-"
 "titres"
 
-#: src/lib/text_content.cc:276
+#: src/lib/text_content.cc:291
 msgid "Content to be joined must have the same subtitle Y scale."
 msgstr ""
 "Le contenu à ajouter doit avoir le même réglage d'échelle verticale de sous-"
 "titres"
 
-#: src/lib/text_content.cc:284
+#: src/lib/text_content.cc:299
 msgid "Content to be joined must have the same subtitle fades."
 msgstr "Le contenu ajouté doit avoir le même réglage de fondu."
 
-#: src/lib/text_content.cc:280
+#: src/lib/text_content.cc:295
 msgid "Content to be joined must have the same subtitle line spacing."
 msgstr ""
 "Les contenus à ajouter doivent tous avoir le même espacement de lignes."
@@ -618,15 +625,15 @@ msgstr ""
 msgid "Content to be joined must have the same video frame rate"
 msgstr "Le contenu à ajouter doit avoir la même cadence vidéo."
 
-#: src/lib/video_content.cc:215
+#: src/lib/video_content.cc:218
 msgid "Content to be joined must have the same video frame type."
 msgstr "Le contenu à ajouter doit avoir le même type de trame vidéo"
 
-#: src/lib/text_content.cc:297
+#: src/lib/text_content.cc:312
 msgid "Content to be joined must use the same DCP track."
 msgstr "Le contenu à ajouter doit utiliser la même piste de DCP"
 
-#: src/lib/text_content.cc:293 src/lib/text_content.cc:313
+#: src/lib/text_content.cc:308 src/lib/text_content.cc:328
 msgid "Content to be joined must use the same fonts."
 msgstr "Le contenu à ajouter doit avoir la même police de sous-titres"
 
@@ -634,12 +641,12 @@ msgstr "Le contenu à ajouter doit avoir la même police de sous-titres"
 msgid "Content to be joined must use the same subtitle stream."
 msgstr "Le contenu à ajouter doit avoir le même flux sous titre"
 
-#: src/lib/text_content.cc:301
+#: src/lib/text_content.cc:316
 #, fuzzy
 msgid "Content to be joined must use the same text language."
 msgstr "Le contenu à ajouter doit avoir la même police de sous-titres"
 
-#: src/lib/video_content.cc:430
+#: src/lib/video_content.cc:438
 msgid "Content video is %1x%2"
 msgstr "Le contenu vidéo est %1x%2"
 
@@ -664,7 +671,7 @@ msgstr "Connexion au serveur %1 (%2) impossible"
 msgid "Could not create remote directory %1 (%2)"
 msgstr "Création du dossier distant %1 (%2) impossible"
 
-#: src/lib/image_examiner.cc:65
+#: src/lib/image_examiner.cc:64
 msgid "Could not decode JPEG2000 file %1 (%2)"
 msgstr "Ne parvient pas à décoder le fichier JPEG2000 %1 (%2)"
 
@@ -700,7 +707,7 @@ msgstr "Ouverture du fichier Zip téléchargé impossible (%1:%2: %3)"
 msgid "Could not open file for writing"
 msgstr "Ouverture du fichier pour enregistrer impossible."
 
-#: src/lib/ffmpeg_file_encoder.cc:269
+#: src/lib/ffmpeg_file_encoder.cc:265
 #, fuzzy
 msgid "Could not open output file %1 (%2)"
 msgstr "Écriture vers fichier distant (%1) impossible (%2)"
@@ -717,19 +724,19 @@ msgstr "Transfert de fichier impossible"
 msgid "Could not write to remote file (%1)"
 msgstr "Écriture vers fichier distant (%1) impossible"
 
-#: src/lib/util.cc:569
+#: src/lib/util.cc:572
 msgid "D-BOX primary"
 msgstr "D-BOX primaire"
 
-#: src/lib/util.cc:570
+#: src/lib/util.cc:573
 msgid "D-BOX secondary"
 msgstr "D-BOX secondaire"
 
-#: src/lib/util.cc:600
+#: src/lib/util.cc:603
 msgid "DBP"
 msgstr "DBP"
 
-#: src/lib/util.cc:601
+#: src/lib/util.cc:604
 msgid "DBS"
 msgstr "DBS"
 
@@ -741,7 +748,7 @@ msgstr "DCI Flat"
 msgid "DCI Scope"
 msgstr "DCI Scope"
 
-#: src/lib/dcp_subtitle_content.cc:103
+#: src/lib/dcp_subtitle_content.cc:104
 msgid "DCP XML subtitles"
 msgstr "Sous-titres XML du DCP"
 
@@ -766,7 +773,7 @@ msgstr ""
 "DCP-o-matic ne peut pas ouvrir le fichier %1 (%2). Soit il n'existe pas, "
 "soit il n'est pas dans un format géré."
 
-#: src/lib/film.cc:1565
+#: src/lib/film.cc:1614
 msgid ""
 "DCP-o-matic had to change your settings for referring to DCPs as OV.  Please "
 "review those settings to make sure they are what you want."
@@ -775,7 +782,7 @@ msgstr ""
 "qu'OV. Merci de vérifier ces réglages pour être sûr qu'ils correspondent à "
 "ce que vous attendez."
 
-#: src/lib/film.cc:1533
+#: src/lib/film.cc:1582
 #, fuzzy
 msgid ""
 "DCP-o-matic had to change your settings so that the film's frame rate is the "
@@ -790,7 +797,7 @@ msgid ""
 "DCP-o-matic no longer supports the `%1' filter, so it has been turned off."
 msgstr "DCP-o-matic ne gère plus le filtre `%1'. Celui-ci a été désactivé."
 
-#: src/lib/config.cc:359 src/lib/config.cc:1114
+#: src/lib/config.cc:357 src/lib/config.cc:1114
 msgid "DCP-o-matic notification"
 msgstr "Notification DCP-o-matic"
 
@@ -884,7 +891,7 @@ msgstr ""
 msgid "Error: %1"
 msgstr "Erreur: %1"
 
-#: src/lib/hints.cc:408
+#: src/lib/hints.cc:405
 #, fuzzy
 msgid "Examining audio, subtitles and closed captions"
 msgstr "Examen des sous-titres codés"
@@ -897,7 +904,7 @@ msgstr "Examen du contenu en cours"
 msgid "Examining subtitles"
 msgstr "Examen des sous-titres"
 
-#: src/lib/hints.cc:406
+#: src/lib/hints.cc:403
 #, fuzzy
 msgid "Examining subtitles and closed captions"
 msgstr "Examen des sous-titres codés"
@@ -928,7 +935,7 @@ msgstr "Echec d'envoi email"
 msgid "Feature"
 msgstr "Feature"
 
-#: src/lib/content.cc:464
+#: src/lib/content.cc:468
 msgid "Filename"
 msgstr "Nom de Fichier"
 
@@ -940,11 +947,11 @@ msgstr "Film"
 msgid "Finding length"
 msgstr "Recherche durée"
 
-#: src/lib/content.cc:471
+#: src/lib/content.cc:475
 msgid "Frame rate"
 msgstr "Cadence"
 
-#: src/lib/util.cc:943
+#: src/lib/util.cc:946
 msgid "Friday"
 msgstr "Vendredi"
 
@@ -988,11 +995,11 @@ msgstr "Gamma 28 (BT470BG)"
 msgid "Gradient debander"
 msgstr "Corrections des bandes par dégradé"
 
-#: src/lib/util.cc:594
+#: src/lib/util.cc:597
 msgid "HI"
 msgstr "HI"
 
-#: src/lib/util.cc:563
+#: src/lib/util.cc:566
 msgid "Hearing impaired"
 msgstr "Déficients Auditifs"
 
@@ -1016,20 +1023,20 @@ msgstr "IEC61966-2-1 (sRGB or sYCC)"
 msgid "IEC61966-2-4"
 msgstr "IEC61966-2-4"
 
-#: src/lib/hints.cc:188
+#: src/lib/hints.cc:185
 msgid "If you do use 25fps you should change your DCP standard to SMPTE."
 msgstr ""
 "Si vous utilisez une cadence de 25 ips, vous devriez choisir la norme SMPTE "
 "pour votre DCP "
 
-#: src/lib/hints.cc:251
+#: src/lib/hints.cc:248
 msgid ""
 "In general it is now advisable to make SMPTE DCPs unless you have a "
 "particular reason to use Interop.  You are advised to set your DCP to use "
 "the SMPTE standard in the \"DCP\" tab."
 msgstr ""
 
-#: src/lib/hints.cc:573
+#: src/lib/hints.cc:570
 msgid ""
 "It is advisable to put your first subtitle at least 4 seconds after the "
 "start of the DCP to make sure it is seen."
@@ -1043,7 +1050,7 @@ msgstr "Erreur indéterminée."
 msgid "JEDEC P22"
 msgstr "JEDEC P22"
 
-#: src/lib/config.cc:349 src/lib/config.cc:1099
+#: src/lib/config.cc:347 src/lib/config.cc:1099
 msgid "KDM delivery: $CPL_NAME"
 msgstr "Envoi KDM: $CPL_NAME"
 
@@ -1051,39 +1058,39 @@ msgstr "Envoi KDM: $CPL_NAME"
 msgid "Kernel deinterlacer"
 msgstr "Désentrelaceur noyau"
 
-#: src/lib/ffmpeg_encoder.cc:251 src/lib/util.cc:588
+#: src/lib/ffmpeg_encoder.cc:253 src/lib/util.cc:591
 msgid "L"
 msgstr "G"
 
-#: src/lib/util.cc:596
+#: src/lib/util.cc:599
 msgid "Lc"
 msgstr "Lc"
 
-#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:557
+#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:560
 msgid "Left"
 msgstr "Gauche"
 
-#: src/lib/util.cc:565
+#: src/lib/util.cc:568
 msgid "Left centre"
 msgstr "Centre Gauche"
 
-#: src/lib/util.cc:567
+#: src/lib/util.cc:570
 msgid "Left rear surround"
 msgstr "Ambiance arrière gauche"
 
-#: src/lib/util.cc:561
+#: src/lib/util.cc:564
 msgid "Left surround"
 msgstr "Ambiance gauche"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "Length"
 msgstr "Durée"
 
-#: src/lib/util.cc:591
+#: src/lib/util.cc:594
 msgid "Lfe"
 msgstr "Bf"
 
-#: src/lib/util.cc:560
+#: src/lib/util.cc:563
 msgid "Lfe (sub)"
 msgstr "Basses fréquences"
 
@@ -1107,11 +1114,11 @@ msgstr "Logarithmique (plage 100:1)"
 msgid "Logarithmic (316:1 range)"
 msgstr "Logarithmique (plage 316:1)"
 
-#: src/lib/exceptions.cc:145
+#: src/lib/exceptions.cc:152
 msgid "Lost communication between main and writer processes"
 msgstr ""
 
-#: src/lib/util.cc:592
+#: src/lib/util.cc:595
 msgid "Ls"
 msgstr "ArG"
 
@@ -1123,19 +1130,19 @@ msgstr "codage demi-canal"
 msgid "Misc"
 msgstr "Divers"
 
-#: src/lib/dcp_examiner.cc:164
+#: src/lib/dcp_examiner.cc:175
 msgid "Mismatched audio channel counts in DCP"
 msgstr "Problème de décompte de canaux audio dans le DCP"
 
-#: src/lib/dcp_examiner.cc:170
+#: src/lib/dcp_examiner.cc:181
 msgid "Mismatched audio sample rates in DCP"
 msgstr "Taux d'échantillonnage audio différents dans le DCP"
 
-#: src/lib/dcp_examiner.cc:137
+#: src/lib/dcp_examiner.cc:145
 msgid "Mismatched frame rates in DCP"
 msgstr "Problème de cadence image dans le DCP"
 
-#: src/lib/dcp_examiner.cc:145
+#: src/lib/dcp_examiner.cc:153
 msgid "Mismatched video sizes in DCP"
 msgstr "Problème de taille d'images dans le DCP"
 
@@ -1143,11 +1150,11 @@ msgstr "Problème de taille d'images dans le DCP"
 msgid "Missing required setting %1"
 msgstr "Paramètre requis %1 manquant"
 
-#: src/lib/util.cc:935
+#: src/lib/util.cc:938
 msgid "Monday"
 msgstr "Lundi"
 
-#: src/lib/writer.cc:763
+#: src/lib/writer.cc:759
 msgid "Mono"
 msgstr "Mono"
 
@@ -1171,7 +1178,7 @@ msgstr "Aucun fichier image valide dans ce dossier."
 msgid "Noise reduction"
 msgstr "Réduction de bruit"
 
-#: src/lib/writer.cc:731 src/lib/writer.cc:738 src/lib/writer.cc:761
+#: src/lib/writer.cc:727 src/lib/writer.cc:734 src/lib/writer.cc:757
 msgid "None"
 msgstr "Aucun"
 
@@ -1208,7 +1215,7 @@ msgstr "Réduction de bruit par ondelettes"
 msgid "P3"
 msgstr "P3"
 
-#: src/lib/util.h:59
+#: src/lib/util.h:64
 msgid ""
 "Please report this problem by using Help -> Report a problem or via email to "
 "carl@dcpomatic.com"
@@ -1220,7 +1227,7 @@ msgstr ""
 msgid "Policy"
 msgstr "Policy"
 
-#: src/lib/content.cc:480
+#: src/lib/content.cc:484
 msgid "Prepared for video frame rate"
 msgstr "Préparé pour la cadence image"
 
@@ -1236,7 +1243,7 @@ msgstr "Promo"
 msgid "Public Service Announcement"
 msgstr "Public Service Announcement"
 
-#: src/lib/ffmpeg_encoder.cc:256 src/lib/util.cc:589
+#: src/lib/ffmpeg_encoder.cc:258 src/lib/util.cc:592
 msgid "R"
 msgstr "D"
 
@@ -1248,7 +1255,7 @@ msgstr "RGB / sRGB (IEC61966-2-1)"
 msgid "Rating"
 msgstr "Classification"
 
-#: src/lib/util.cc:597
+#: src/lib/util.cc:600
 msgid "Rc"
 msgstr "Rc"
 
@@ -1268,19 +1275,19 @@ msgstr "Rec. 601"
 msgid "Rec. 709"
 msgstr "Rec. 709"
 
-#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:558
+#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:561
 msgid "Right"
 msgstr "Droit"
 
-#: src/lib/util.cc:566
+#: src/lib/util.cc:569
 msgid "Right centre"
 msgstr "Centre Droit"
 
-#: src/lib/util.cc:568
+#: src/lib/util.cc:571
 msgid "Right rear surround"
 msgstr "Ambiance arrière droite"
 
-#: src/lib/util.cc:562
+#: src/lib/util.cc:565
 msgid "Right surround"
 msgstr "Ambiance droite"
 
@@ -1292,7 +1299,7 @@ msgstr "Pivoter de 90 degrés à gauche"
 msgid "Rotate 90 degrees clockwise"
 msgstr "Pivoter de 90 degrés à droite"
 
-#: src/lib/util.cc:593
+#: src/lib/util.cc:596
 msgid "Rs"
 msgstr "ArD"
 
@@ -1317,7 +1324,7 @@ msgstr "SMPTE 2085, Y'D'zD'x"
 msgid "SMPTE 240M"
 msgstr "SMPTE 240M"
 
-#: src/lib/hints.cc:615
+#: src/lib/hints.cc:612
 msgid ""
 "SMPTE DCPs with the type FTR (feature) should have markers for the first "
 "frame of end credits (FFEC) and the first frame of moving credits (FFMC).  "
@@ -1355,7 +1362,7 @@ msgstr "Erreur SSH (%1)"
 msgid "SSH error [%1] (%2)"
 msgstr "Erreur SSH (%1)"
 
-#: src/lib/util.cc:945
+#: src/lib/util.cc:948
 msgid "Saturday"
 msgstr "Samedi"
 
@@ -1371,11 +1378,11 @@ msgstr "Envoi email"
 msgid "Short"
 msgstr "Short"
 
-#: src/lib/util.cc:602
+#: src/lib/util.cc:605
 msgid "Sign"
 msgstr ""
 
-#: src/lib/video_content.cc:500
+#: src/lib/video_content.cc:510
 msgid "Size"
 msgstr "Taille"
 
@@ -1403,7 +1410,7 @@ msgstr ""
 "\n"
 "Ces fichiers vont être réexaminés. Vous devriez vérifier leurs réglages."
 
-#: src/lib/hints.cc:554
+#: src/lib/hints.cc:551
 msgid ""
 "Some of your closed captions span more than %1 lines, so they will be "
 "truncated."
@@ -1411,22 +1418,22 @@ msgstr ""
 "Certains de vos sous-titres font plus de %1 lignes, aussi seront ils "
 "tronqués."
 
-#: src/lib/hints.cc:653
+#: src/lib/hints.cc:650
 msgid ""
 "Some of your content has audio but you have not set the audio language.  It "
 "is advisable to set the audio language in the \"DCP\" tab unless your audio "
 "has no spoken parts."
 msgstr ""
 
-#: src/lib/film.cc:406
+#: src/lib/film.cc:417
 msgid "Some of your content needs a KDM"
 msgstr "Certains de vos contenus nécessitent une clé"
 
-#: src/lib/film.cc:409
+#: src/lib/film.cc:420
 msgid "Some of your content needs an OV"
 msgstr "Certains de vos contenus nécessitent une OV"
 
-#: src/lib/writer.cc:765
+#: src/lib/writer.cc:761
 msgid "Stereo"
 msgstr "Stéréo"
 
@@ -1438,7 +1445,7 @@ msgstr "Mixage Stéréo vers 5.1 A"
 msgid "Stereo to 5.1 up-mixer B"
 msgstr "Mixage Stéréo vers 5.1 B"
 
-#: src/lib/util.cc:933
+#: src/lib/util.cc:936
 msgid "Sunday"
 msgstr "Dimanche"
 
@@ -1458,7 +1465,7 @@ msgstr "Test"
 msgid "Text subtitles"
 msgstr "Sous-titres textes"
 
-#: src/lib/film.cc:389
+#: src/lib/film.cc:400
 msgid "The DCP is empty, perhaps because all the content has zero length."
 msgstr ""
 
@@ -1470,7 +1477,7 @@ msgstr "Le certificat pour la signature est invalide"
 msgid "The certificate chain for signing is invalid (%1)"
 msgstr "La chaîne du certificat pour la signature est invalide (%1)"
 
-#: src/lib/video_decoder.cc:86
+#: src/lib/video_decoder.cc:81
 msgid ""
 "The content file %1 is set as 3D but does not appear to contain 3D images.  "
 "Please set it to 2D.  You can still make a 3D DCP from this content by "
@@ -1501,7 +1508,7 @@ msgstr "Le fichier %1 a été raccourci de %2 millisecondes."
 msgid "The file %1 has been trimmed by %2 milliseconds more."
 msgstr "Le fichier %1 a été allongé de %2 millisecondes."
 
-#: src/lib/hints.cc:241
+#: src/lib/hints.cc:238
 msgid ""
 "There is a large difference between the frame rate of your DCP and that of "
 "some of your content.  This will cause your audio to play back at a much "
@@ -1515,7 +1522,7 @@ msgstr ""
 "votre DCP à une vitesse plus proche de la cadence de vos contenus, en "
 "espérant que serveurs et projecteurs cibles supportent cette cadence."
 
-#: src/lib/dcp_content.cc:657
+#: src/lib/dcp_content.cc:659
 msgid "There is no video in this DCP"
 msgstr "Il n'y a aucune vidéo dans ce DCP"
 
@@ -1529,12 +1536,12 @@ msgstr ""
 "32 bit, essayez de réduire le nombre de processus à utiliser dans l'onglet "
 "principal des préférences."
 
-#: src/lib/util.cc:1146
+#: src/lib/util.cc:1150
 #, fuzzy
 msgid "This KDM was made for DCP-o-matic but not for its leaf certificate."
 msgstr "La clé a été créée pour DCP-o-matic mais pas pour son certificat."
 
-#: src/lib/util.cc:1144
+#: src/lib/util.cc:1148
 #, fuzzy
 msgid "This KDM was not made for DCP-o-matic's decryption certificate."
 msgstr ""
@@ -1563,7 +1570,7 @@ msgstr ""
 "Ce fichier est une KDM. Les KDM doivent être ajoutées au contenu du DCP en "
 "cliquant droit sur le contenu et en sélectionnant \"Add KDM\"."
 
-#: src/lib/film.cc:581
+#: src/lib/film.cc:595
 msgid ""
 "This film was created with a newer version of DCP-o-matic, and it cannot be "
 "loaded into this version.  Sorry!"
@@ -1571,7 +1578,7 @@ msgstr ""
 "Ce film a été créé avec une nouvelle version de DCP-o-matic et il ne peut "
 "être ouvert dans cette version du programme. Désolé!"
 
-#: src/lib/film.cc:566
+#: src/lib/film.cc:580
 msgid ""
 "This film was created with an older version of DCP-o-matic, and "
 "unfortunately it cannot be loaded into this version.  You will need to "
@@ -1581,7 +1588,7 @@ msgstr ""
 "impossible. Créez un nouveau projet, ajoutez du contenu et reparamétrez. "
 "Désolé !"
 
-#: src/lib/util.cc:941
+#: src/lib/util.cc:944
 msgid "Thursday"
 msgstr "Jeudi"
 
@@ -1601,7 +1608,7 @@ msgstr "transcodage %1"
 msgid "Transitional"
 msgstr "Transitional"
 
-#: src/lib/util.cc:937
+#: src/lib/util.cc:940
 msgid "Tuesday"
 msgstr "Mardi"
 
@@ -1626,7 +1633,7 @@ msgstr "Inconnu"
 msgid "Unknown error"
 msgstr "Erreur inconnue"
 
-#: src/lib/ffmpeg_decoder.cc:343
+#: src/lib/ffmpeg_decoder.cc:339
 msgid "Unrecognised audio sample format (%1)"
 msgstr "Échantillonnage audio (%1) inconnu"
 
@@ -1646,7 +1653,7 @@ msgstr "Non-spécifié"
 msgid "Untitled"
 msgstr "Sans titre"
 
-#: src/lib/util.cc:571 src/lib/util.cc:572
+#: src/lib/util.cc:574 src/lib/util.cc:575
 msgid "Unused"
 msgstr "Non-utilisé"
 
@@ -1658,7 +1665,7 @@ msgstr "Gauche sur-mixé"
 msgid "Upmix R"
 msgstr "Droit sur-mixé"
 
-#: src/lib/util.cc:595
+#: src/lib/util.cc:598
 msgid "VI"
 msgstr "VI"
 
@@ -1670,7 +1677,7 @@ msgstr "Vérifier le DCP"
 msgid "Vertical flip"
 msgstr "Inversion verticale"
 
-#: src/lib/util.cc:564
+#: src/lib/util.cc:567
 msgid "Visually impaired"
 msgstr "Déficients Visuels"
 
@@ -1682,7 +1689,7 @@ msgstr "En cours"
 msgid "Weave filter"
 msgstr "Canevas"
 
-#: src/lib/util.cc:939
+#: src/lib/util.cc:942
 msgid "Wednesday"
 msgstr "Mercredi"
 
@@ -1694,7 +1701,7 @@ msgstr "YCOCG"
 msgid "Yet Another Deinterlacing Filter"
 msgstr "Un autre filtre de désentrelacement"
 
-#: src/lib/hints.cc:201
+#: src/lib/hints.cc:198
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You are advised to change the DCP frame rate "
@@ -1704,7 +1711,7 @@ msgstr ""
 "cadence n'est pas supportée par tous les projecteurs. Nous vous conseillons "
 "de modifier la cadence de votre DCP à %2 ips."
 
-#: src/lib/hints.cc:185
+#: src/lib/hints.cc:182
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You may want to consider changing your frame "
@@ -1714,7 +1721,7 @@ msgstr ""
 "cadence n'est pas supportée par tous les projecteurs. Nous pourriez "
 "envisager de modifier la cadence de votre DCP à %2 ips."
 
-#: src/lib/hints.cc:195
+#: src/lib/hints.cc:192
 msgid ""
 "You are set up for a DCP frame rate of 30fps, which is not supported by all "
 "projectors.  Be aware that you may have compatibility problems."
@@ -1723,7 +1730,7 @@ msgstr ""
 "supportée par tous les projecteurs. Attention à de probables problèmes de "
 "compatibilité."
 
-#: src/lib/hints.cc:306
+#: src/lib/hints.cc:303
 msgid ""
 "You are using 3D content but your DCP is set to 2D.  Set the DCP to 3D if "
 "you want to play it back on a 3D system (e.g. Real-D, MasterImage etc.)"
@@ -1732,7 +1739,7 @@ msgstr ""
 "sortie DCP sur 3D si vous souhaitez le projeter sur un système 3D (par "
 "exemple : Real-D, MasterImage etc.)"
 
-#: src/lib/hints.cc:122
+#: src/lib/hints.cc:119
 msgid ""
 "You are using DCP-o-matic's stereo-to-5.1 upmixer.  This is experimental and "
 "may result in poor-quality audio.  If you continue, you should listen to the "
@@ -1742,7 +1749,7 @@ msgstr ""
 "expérimental et un son de mauvaise qualité pourrait en résulter. Si vous "
 "continuez, essayez d'écouter le résultat dans un cinéma afin de vérifier."
 
-#: src/lib/hints.cc:290
+#: src/lib/hints.cc:287
 msgid ""
 "You have %1 files that look like they are VOB files from DVD. You should "
 "join them to ensure smooth joins between the files."
@@ -1750,13 +1757,13 @@ msgstr ""
 "Vous avez  %1 fichiers qui ressemblent à des fichiers VOB issus de DVD. Vous "
 "devriez les assembler pour vous assurer des transitions fluides."
 
-#: src/lib/film.cc:1529
+#: src/lib/film.cc:1578
 msgid ""
 "You have more than one piece of Atmos content, and they do not have the same "
 "frame rate.  You must remove some Atmos content."
 msgstr ""
 
-#: src/lib/hints.cc:561
+#: src/lib/hints.cc:558
 msgid ""
 "You have overlapping closed captions, which are not allowed in Interop "
 "DCPs.  Change your DCP standard to SMPTE."
@@ -1764,7 +1771,7 @@ msgstr ""
 "Des sous-titres se chevauchent, ce qui n'est pas autorisé dans les DCP au "
 "standard Interop. Modifiez votre standard de DCP en SMPTE."
 
-#: src/lib/hints.cc:274
+#: src/lib/hints.cc:271
 msgid ""
 "You have specified a font file which is larger than 640kB.  This is very "
 "likely to cause problems on playback."
@@ -1772,11 +1779,11 @@ msgstr ""
 "Vous avez choisi un fichier police de caractère qui est plus lourd que 640 "
 "kB. Cela peut poser des problèmes en lecture."
 
-#: src/lib/film.cc:385
+#: src/lib/film.cc:396
 msgid "You must add some content to the DCP before creating it"
 msgstr "Vous devez ajouter des contenus au DCP avant de le créer"
 
-#: src/lib/hints.cc:112
+#: src/lib/hints.cc:109
 msgid ""
 "Your DCP has fewer than 6 audio channels.  This may cause problems on some "
 "projectors.  You may want to set the DCP to have 6 channels.  It does not "
@@ -1784,7 +1791,7 @@ msgid ""
 "extras with silence."
 msgstr ""
 
-#: src/lib/hints.cc:160
+#: src/lib/hints.cc:157
 #, fuzzy
 msgid ""
 "Your DCP uses an unusual container ratio.  This may cause problems on some "
@@ -1794,7 +1801,7 @@ msgstr ""
 "problèmes sur certains projecteurs. Si possible, utilisez le Flat ou le "
 "Scope comme format image pour le DCP."
 
-#: src/lib/hints.cc:340
+#: src/lib/hints.cc:337
 msgid ""
 "Your audio level is very high (on %1).  You should reduce the gain of your "
 "audio content."
@@ -1802,7 +1809,7 @@ msgstr ""
 "Votre volume sonore est très élevé (sur %1). Vous devriez réduire le dain de "
 "votre contenu audio."
 
-#: src/lib/config.cc:289
+#: src/lib/config.cc:287
 msgid ""
 "Your default container is not valid and has been changed to Flat (1.85:1)"
 msgstr ""
@@ -1831,7 +1838,7 @@ msgstr "[séquence d'images]"
 msgid "[still]"
 msgstr "[image fixe]"
 
-#: src/lib/dcp_subtitle_content.cc:97 src/lib/string_text_file_content.cc:78
+#: src/lib/dcp_subtitle_content.cc:98 src/lib/string_text_file_content.cc:78
 msgid "[subtitles]"
 msgstr "[sous-titres]"
 
@@ -1849,11 +1856,11 @@ msgstr "temps de connexion expiré"
 msgid "connecting"
 msgstr "connexion"
 
-#: src/lib/film.cc:381
+#: src/lib/film.cc:392
 msgid "container"
 msgstr "conteneur"
 
-#: src/lib/film.cc:393
+#: src/lib/film.cc:404
 msgid "content type"
 msgstr "type de contenu"
 
@@ -1909,78 +1916,78 @@ msgstr "erreur pendant async_read (%1)"
 msgid "error during async_write (%1)"
 msgstr "erreur pendant async_write (%1)"
 
-#: src/lib/content.cc:473 src/lib/content.cc:482
+#: src/lib/content.cc:477 src/lib/content.cc:486
 msgid "frames per second"
 msgstr "images par seconde"
 
 #. / TRANSLATORS: h here is an abbreviation for hours
-#: src/lib/util.cc:200
+#: src/lib/util.cc:203
 msgid "h"
 msgstr "h"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:750
+#: src/lib/dcp_content.cc:752
 msgid "it does not have closed captions in all its reels."
 msgstr "Pas de sous-titres dans toutes ses bobines"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:739
+#: src/lib/dcp_content.cc:741
 msgid "it does not have open subtitles in all its reels."
 msgstr "Pas de sous-titres ouverts dans toutes ses bobines"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:706
+#: src/lib/dcp_content.cc:708
 msgid "it does not have sound in all its reels."
 msgstr "Pas de son dans toutes ses bobines"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:610
+#: src/lib/dcp_content.cc:612
 msgid "it has a different frame rate to the film."
 msgstr "Vitesse de défilement différente du film"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:765
+#: src/lib/dcp_content.cc:767
 msgid ""
 "it has a start trim so its subtitles or closed captions must be re-written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:667
+#: src/lib/dcp_content.cc:669
 msgid "it is 2K and the film is 4K."
 msgstr "C'est du 2K mais le film est en 4K."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:664
+#: src/lib/dcp_content.cc:666
 msgid "it is 4K and the film is 2K."
 msgstr "C'est du 4K mais le film est en 2K."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:598
+#: src/lib/dcp_content.cc:600
 msgid "it is Interop and the film is set to SMPTE."
 msgstr "Format Interop alors que le DCP est SMPTE."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:602
+#: src/lib/dcp_content.cc:604
 msgid "it is SMPTE and the film is set to Interop."
 msgstr "Format SMPTE alors que le DCP est interop."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:712
+#: src/lib/dcp_content.cc:714
 msgid "it overlaps other audio content; remove the other content."
 msgstr "Contenus audio superposés, enlevez les autres contenus."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:770
+#: src/lib/dcp_content.cc:772
 msgid "it overlaps other text content; remove the other content."
 msgstr "Contenus sous-titres superposés, enlevez les autres contenus."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:677
+#: src/lib/dcp_content.cc:679
 msgid "it overlaps other video content; remove the other content."
 msgstr "Contenus vidéo superposés, enlevez les autres contenus."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:633
+#: src/lib/dcp_content.cc:635
 msgid ""
 "its reel lengths differ from those in the film; set the reel mode to 'split "
 "by video content'."
@@ -1989,12 +1996,12 @@ msgstr ""
 "le mode 'découper par contenu vidéo'. "
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:672
+#: src/lib/dcp_content.cc:674
 msgid "its video frame size differs from the film's."
 msgstr "La taille de l'image du film diffère de celle du DCP"
 
 #. / TRANSLATORS: m here is an abbreviation for minutes
-#: src/lib/util.cc:209
+#: src/lib/util.cc:212
 msgid "m"
 msgstr "m"
 
@@ -2002,26 +2009,26 @@ msgstr "m"
 msgid "moving"
 msgstr "séquence"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "name"
 msgstr "nom"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:756
+#: src/lib/dcp_content.cc:758
 msgid ""
 "one of its closed caption has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:743
+#: src/lib/dcp_content.cc:745
 msgid ""
 "one of its subtitle reels has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: s here is an abbreviation for seconds
-#: src/lib/util.cc:219
+#: src/lib/util.cc:222
 msgid "s"
 msgstr "s"
 
@@ -2029,7 +2036,7 @@ msgstr "s"
 msgid "sRGB"
 msgstr "sRGB"
 
-#: src/lib/film.cc:402
+#: src/lib/film.cc:413
 msgid "some of your content is missing"
 msgstr "Certains de vos contenus sont manquants"
 
@@ -2041,7 +2048,7 @@ msgstr "fixe"
 msgid "unknown"
 msgstr "Inconnu"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "video frames"
 msgstr "images"
 
diff --git a/src/lib/po/it_IT.po b/src/lib/po/it_IT.po
index 94989a4fb..15d82715a 100644
--- a/src/lib/po/it_IT.po
+++ b/src/lib/po/it_IT.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: IT VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-08-20 23:10+0200\n"
+"POT-Creation-Date: 2021-10-17 15:26+0200\n"
 "PO-Revision-Date: 2018-09-30 14:16+0200\n"
 "Last-Translator: William Fanelli <william.f@impronte.com>\n"
 "Language-Team: \n"
@@ -17,7 +17,7 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "X-Generator: Poedit 2.0.7\n"
 
-#: src/lib/video_content.cc:486
+#: src/lib/video_content.cc:496
 #, c-format
 msgid ""
 "\n"
@@ -26,7 +26,7 @@ msgstr ""
 "\n"
 "Frequenza fotogrammi del contenuto %.4f\n"
 
-#: src/lib/video_content.cc:451
+#: src/lib/video_content.cc:461
 msgid ""
 "\n"
 "Cropped to %1x%2"
@@ -34,7 +34,7 @@ msgstr ""
 "\n"
 "Ritagliato a %1x%2"
 
-#: src/lib/video_content.cc:444
+#: src/lib/video_content.cc:452
 #, c-format
 msgid ""
 "\n"
@@ -43,7 +43,7 @@ msgstr ""
 "\n"
 "Rapporto schermo %.2f:1"
 
-#: src/lib/video_content.cc:474
+#: src/lib/video_content.cc:484
 msgid ""
 "\n"
 "Padded with black to fit container %1 (%2x%3)"
@@ -51,7 +51,7 @@ msgstr ""
 "\n"
 "Aggiunto nero per adattare al contenitore %1 (%2x%3)"
 
-#: src/lib/video_content.cc:464
+#: src/lib/video_content.cc:474
 msgid ""
 "\n"
 "Scaled to %1x%2"
@@ -59,7 +59,7 @@ msgstr ""
 "\n"
 "Scalato a %1x%2"
 
-#: src/lib/video_content.cc:468 src/lib/video_content.cc:479
+#: src/lib/video_content.cc:478 src/lib/video_content.cc:489
 #, c-format
 msgid " (%.2f:1)"
 msgstr " (%.2f:1)"
@@ -104,7 +104,7 @@ msgstr ""
 msgid "%1 [Atmos]"
 msgstr "%1 [Atmos]"
 
-#: src/lib/dcp_content.cc:318
+#: src/lib/dcp_content.cc:320
 msgid "%1 [DCP]"
 msgstr "%1 [DCP]"
 
@@ -120,7 +120,7 @@ msgstr "%1 [film]"
 msgid "%1 [video]"
 msgstr "%1 [video]"
 
-#: src/lib/video_content.cc:439
+#: src/lib/video_content.cc:447
 #, c-format
 msgid ", pixel aspect ratio %.2f:1"
 msgstr ", rapporto pixel %.2f:1"
@@ -169,7 +169,7 @@ msgstr "2.39 (Scope)"
 msgid "3D denoiser"
 msgstr "Riduzione rumore 3D"
 
-#: src/lib/hints.cc:212
+#: src/lib/hints.cc:209
 msgid ""
 "4K 3D is only supported by a very limited number of projectors.  Unless you "
 "know that you will play this DCP back on a capable projector, it is "
@@ -201,7 +201,7 @@ msgid ""
 "Paypal to donate €10</a></ul><p>Thank you!"
 msgstr ""
 
-#: src/lib/hints.cc:169
+#: src/lib/hints.cc:166
 msgid ""
 "A few projectors have problems playing back very high bit-rate DCPs.  It is "
 "a good idea to drop the JPEG2000 bandwidth down to about 200Mbit/s; this is "
@@ -211,6 +211,13 @@ msgstr ""
 "rate molto alto. È consigliato mantenere la banda JPEG2000 intorno ai "
 "200Mbit/s; è improbabile che si vedano effetti significativi sull'immagine."
 
+#: src/lib/text_content.cc:248
+msgid ""
+"A subtitle or closed caption file in this project is marked with the "
+"language '%1', which DCP-o-matic does not recognise.  The file's language "
+"has been cleared."
+msgstr ""
+
 #: src/lib/ffmpeg_content.cc:635
 msgid "ARIB STD-B67 ('Hybrid log-gamma')"
 msgstr "ARIB STD-B67 ('log-gamma ibrido')"
@@ -219,7 +226,7 @@ msgstr "ARIB STD-B67 ('log-gamma ibrido')"
 msgid "Advertisement"
 msgstr "Pubblicità"
 
-#: src/lib/hints.cc:146
+#: src/lib/hints.cc:143
 msgid ""
 "All of your content is in Scope (2.39:1) but your DCP's container is Flat "
 "(1.85:1).  This will letter-box your content inside a Flat (1.85:1) frame.  "
@@ -231,7 +238,7 @@ msgstr ""
 "Forse è preferibile impostare il contenitore DCP su Scope (2.39:1) nel tab "
 "\"DCP\"."
 
-#: src/lib/hints.cc:150
+#: src/lib/hints.cc:147
 #, fuzzy
 msgid ""
 "All of your content narrower than 1.90:1 but your DCP's container is Scope "
@@ -256,54 +263,54 @@ msgstr "Analizza l'audio"
 msgid "Analysing subtitles"
 msgstr "Trova sottotitoli"
 
-#: src/lib/hints.cc:368
+#: src/lib/hints.cc:365
 msgid ""
 "At least one marker comes after the end of the project and will be ignored."
 msgstr ""
 
-#: src/lib/hints.cc:473
+#: src/lib/hints.cc:470
 msgid "At least one of your closed caption files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:466
+#: src/lib/hints.cc:463
 msgid "At least one of your closed caption files' XML part is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:481
+#: src/lib/hints.cc:478
 msgid "At least one of your subtitle files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:445
+#: src/lib/hints.cc:442
 msgid ""
 "At least one of your subtitle lines has more than 52 characters.  It is "
 "recommended to make each line 52 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:447
+#: src/lib/hints.cc:444
 msgid ""
 "At least one of your subtitle lines has more than 79 characters.  You should "
 "make each line 79 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:590
+#: src/lib/hints.cc:587
 msgid ""
 "At least one of your subtitles has more than 3 lines.  It is advisable to "
 "use no more than 3 lines."
 msgstr ""
 
-#: src/lib/hints.cc:580
+#: src/lib/hints.cc:577
 msgid ""
 "At least one of your subtitles lasts less than 15 frames.  It is advisable "
 "to make each subtitle at least 15 frames long."
 msgstr ""
 
-#: src/lib/hints.cc:585
+#: src/lib/hints.cc:582
 msgid ""
 "At least one of your subtitles starts less than 2 frames after the previous "
 "one.  It is advisable to make the gap between subtitles at least 2 frames."
 msgstr ""
 
-#: src/lib/hints.cc:633
+#: src/lib/hints.cc:630
 msgid ""
 "At least one piece of subtitle or closed caption content has no specified "
 "language.  It is advisable to set the language for each piece of subtitle or "
@@ -377,15 +384,15 @@ msgstr "Bits per pixel"
 msgid "Bob Weaver Deinterlacing Filter"
 msgstr "Altro filtro di deinterlacciamento"
 
-#: src/lib/util.cc:598
+#: src/lib/util.cc:601
 msgid "BsL"
 msgstr "BsL"
 
-#: src/lib/util.cc:599
+#: src/lib/util.cc:602
 msgid "BsR"
 msgstr "BsR"
 
-#: src/lib/util.cc:590
+#: src/lib/util.cc:593
 msgid "C"
 msgstr "C"
 
@@ -393,7 +400,7 @@ msgstr "C"
 msgid "Cancelled"
 msgstr "Cancellato"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "Cannot contain slashes"
 msgstr "Non può contenere slash"
 
@@ -401,12 +408,12 @@ msgstr "Non può contenere slash"
 msgid "Cannot handle pixel format %1 during %2"
 msgstr "Impossibile gestire il formato pixel %1 durante %2"
 
-#: src/lib/film.cc:1662
+#: src/lib/film.cc:1711
 msgid "Cannot make a KDM as this project is not encrypted."
 msgstr ""
 "Impossibile creare un KDM in quanto questo progetto non è crittografato."
 
-#: src/lib/util.cc:559
+#: src/lib/util.cc:562
 msgid "Centre"
 msgstr "Centro"
 
@@ -475,7 +482,7 @@ msgstr ""
 msgid "Computing digest"
 msgstr "Calcolo assimilazione dati"
 
-#: src/lib/writer.cc:535
+#: src/lib/writer.cc:531
 msgid "Computing digests"
 msgstr "Calcolo assimilazioni dati"
 
@@ -504,24 +511,24 @@ msgstr "Tutti i contenuti da unire possono avere o non avere i sottotitoli"
 msgid "Content to be joined must all have or not have video"
 msgstr "Tutti i contenuti da unire possono avere o non avere la traccia video"
 
-#: src/lib/text_content.cc:305
+#: src/lib/text_content.cc:320
 #, fuzzy
 msgid ""
 "Content to be joined must both be main subtitle languages or both additional."
 msgstr "Il contenuto da unire deve avere la stessa interlinea dei sottotitoli."
 
-#: src/lib/video_content.cc:207
+#: src/lib/video_content.cc:210
 #, fuzzy
 msgid "Content to be joined must have all its video used or not used."
 msgstr "Il contenuto da unire deve avere la stessa frequenza fotogrammi"
 
-#: src/lib/text_content.cc:260
+#: src/lib/text_content.cc:275
 msgid "Content to be joined must have the same 'burn subtitles' setting."
 msgstr ""
 "Il contenuto da unire deve avere le stesse impostazioni di 'masterizza "
 "sottotitoli'."
 
-#: src/lib/text_content.cc:256
+#: src/lib/text_content.cc:271
 msgid "Content to be joined must have the same 'use subtitles' setting."
 msgstr ""
 "Il contenuto da unire deve avere le stesse impostazioni di 'usa sottotitoli'."
@@ -534,67 +541,67 @@ msgstr "Il contenuto da unire deve avere lo stesso ritardo audio."
 msgid "Content to be joined must have the same audio gain."
 msgstr "Il contenuto da unire deve avere lo stesso guadagno audio."
 
-#: src/lib/video_content.cc:239
+#: src/lib/video_content.cc:242
 #, fuzzy
 msgid "Content to be joined must have the same burnt subtitle language."
 msgstr ""
 "Il contenuto da unire deve avere le stesse impostazioni di 'masterizza "
 "sottotitoli'."
 
-#: src/lib/video_content.cc:231
+#: src/lib/video_content.cc:234
 msgid "Content to be joined must have the same colour conversion."
 msgstr "Il contenuto da unire deve avere la stessa conversione del colore."
 
-#: src/lib/video_content.cc:219
+#: src/lib/video_content.cc:222
 msgid "Content to be joined must have the same crop."
 msgstr "Il contenuto da unire deve avere lo stesso ritaglio."
 
-#: src/lib/video_content.cc:223
+#: src/lib/video_content.cc:226
 #, fuzzy
 msgid "Content to be joined must have the same custom ratio setting."
 msgstr "Il contenuto da unire deve avere la stessa scala."
 
-#: src/lib/video_content.cc:227
+#: src/lib/video_content.cc:230
 #, fuzzy
 msgid "Content to be joined must have the same custom size setting."
 msgstr "Il contenuto da unire deve avere la stessa scala."
 
-#: src/lib/video_content.cc:235
+#: src/lib/video_content.cc:238
 msgid "Content to be joined must have the same fades."
 msgstr "Il contenuto da unire deve avere le stesse dissolvenze."
 
-#: src/lib/text_content.cc:288
+#: src/lib/text_content.cc:303
 msgid "Content to be joined must have the same outline width."
 msgstr "Il contenuto da unire deve avere la stessa dimensione."
 
-#: src/lib/video_content.cc:211
+#: src/lib/video_content.cc:214
 msgid "Content to be joined must have the same picture size."
 msgstr "Il contenuto da unire deve avere la stessa dimensione dell'immagine."
 
-#: src/lib/text_content.cc:264
+#: src/lib/text_content.cc:279
 msgid "Content to be joined must have the same subtitle X offset."
 msgstr ""
 "Il contenuto da unire deve avere lo stesso spostamento X dei sottotitoli."
 
-#: src/lib/text_content.cc:272
+#: src/lib/text_content.cc:287
 msgid "Content to be joined must have the same subtitle X scale."
 msgstr "Il contenuto da unire deve avere la stessa scala X dei sottotitoli."
 
-#: src/lib/text_content.cc:268
+#: src/lib/text_content.cc:283
 msgid "Content to be joined must have the same subtitle Y offset."
 msgstr ""
 "Il contenuto da unire deve avere lo stesso spostamento Y dei sottotitoli."
 
-#: src/lib/text_content.cc:276
+#: src/lib/text_content.cc:291
 msgid "Content to be joined must have the same subtitle Y scale."
 msgstr "Il contenuto da unire deve avere la stessa scala Y dei sottotitoli."
 
-#: src/lib/text_content.cc:284
+#: src/lib/text_content.cc:299
 msgid "Content to be joined must have the same subtitle fades."
 msgstr ""
 "Il contenuto da unire deve avere le stesse dissolvenze dei sottotitoli."
 
-#: src/lib/text_content.cc:280
+#: src/lib/text_content.cc:295
 msgid "Content to be joined must have the same subtitle line spacing."
 msgstr "Il contenuto da unire deve avere la stessa interlinea dei sottotitoli."
 
@@ -602,16 +609,16 @@ msgstr "Il contenuto da unire deve avere la stessa interlinea dei sottotitoli."
 msgid "Content to be joined must have the same video frame rate"
 msgstr "Il contenuto da unire deve avere la stessa frequenza fotogrammi"
 
-#: src/lib/video_content.cc:215
+#: src/lib/video_content.cc:218
 msgid "Content to be joined must have the same video frame type."
 msgstr "Il contenuto da unire deve avere lo stesso tipo di fotogramma video."
 
-#: src/lib/text_content.cc:297
+#: src/lib/text_content.cc:312
 #, fuzzy
 msgid "Content to be joined must use the same DCP track."
 msgstr "Il contenuto da unire deve usare gli stessi caratteri."
 
-#: src/lib/text_content.cc:293 src/lib/text_content.cc:313
+#: src/lib/text_content.cc:308 src/lib/text_content.cc:328
 msgid "Content to be joined must use the same fonts."
 msgstr "Il contenuto da unire deve usare gli stessi caratteri."
 
@@ -619,12 +626,12 @@ msgstr "Il contenuto da unire deve usare gli stessi caratteri."
 msgid "Content to be joined must use the same subtitle stream."
 msgstr "Il contenuto da unire deve usare lo stesso flusso di sottotitoli."
 
-#: src/lib/text_content.cc:301
+#: src/lib/text_content.cc:316
 #, fuzzy
 msgid "Content to be joined must use the same text language."
 msgstr "Il contenuto da unire deve usare gli stessi caratteri."
 
-#: src/lib/video_content.cc:430
+#: src/lib/video_content.cc:438
 msgid "Content video is %1x%2"
 msgstr "Il contenuto video è %1x%2"
 
@@ -649,7 +656,7 @@ msgstr "Impossibile connettersi al server %1 (%2)"
 msgid "Could not create remote directory %1 (%2)"
 msgstr "Impossibile creare la cartella remota %1 (%2)"
 
-#: src/lib/image_examiner.cc:65
+#: src/lib/image_examiner.cc:64
 msgid "Could not decode JPEG2000 file %1 (%2)"
 msgstr "Impossibile decodificare il file JPEG2000 %1 (%2)"
 
@@ -688,7 +695,7 @@ msgstr "Impossibile aprire il file ZIP scaricato"
 msgid "Could not open file for writing"
 msgstr "impossibile aprire il file %1 per la scrittura (%2)"
 
-#: src/lib/ffmpeg_file_encoder.cc:269
+#: src/lib/ffmpeg_file_encoder.cc:265
 #, fuzzy
 msgid "Could not open output file %1 (%2)"
 msgstr "Impossibile scrivere il file %1 (%2)"
@@ -705,19 +712,19 @@ msgstr "Impossibile avviare il trasferimento"
 msgid "Could not write to remote file (%1)"
 msgstr "Impossibile scrivere il file remoto (%1)"
 
-#: src/lib/util.cc:569
+#: src/lib/util.cc:572
 msgid "D-BOX primary"
 msgstr "D-BOX principale"
 
-#: src/lib/util.cc:570
+#: src/lib/util.cc:573
 msgid "D-BOX secondary"
 msgstr "D-BOX secondario"
 
-#: src/lib/util.cc:600
+#: src/lib/util.cc:603
 msgid "DBP"
 msgstr "DBP"
 
-#: src/lib/util.cc:601
+#: src/lib/util.cc:604
 msgid "DBS"
 msgstr "DBS"
 
@@ -729,7 +736,7 @@ msgstr "DCI Flat"
 msgid "DCI Scope"
 msgstr "DCI Scope"
 
-#: src/lib/dcp_subtitle_content.cc:103
+#: src/lib/dcp_subtitle_content.cc:104
 msgid "DCP XML subtitles"
 msgstr "DCP XML sottotitoli"
 
@@ -754,13 +761,13 @@ msgstr ""
 "DCP-o-MATIC non riesce ad aprire il file %1 (%2). Forse non esiste oppure è "
 "un formato non riconosciuto."
 
-#: src/lib/film.cc:1565
+#: src/lib/film.cc:1614
 msgid ""
 "DCP-o-matic had to change your settings for referring to DCPs as OV.  Please "
 "review those settings to make sure they are what you want."
 msgstr ""
 
-#: src/lib/film.cc:1533
+#: src/lib/film.cc:1582
 msgid ""
 "DCP-o-matic had to change your settings so that the film's frame rate is the "
 "same as that of your Atmos content."
@@ -772,7 +779,7 @@ msgid ""
 msgstr ""
 "DCP-o-MATIC non supporta più il filtro '%1', quindi è stato disattivato."
 
-#: src/lib/config.cc:359 src/lib/config.cc:1114
+#: src/lib/config.cc:357 src/lib/config.cc:1114
 msgid "DCP-o-matic notification"
 msgstr "DCP-o-MATIC notifica"
 
@@ -866,7 +873,7 @@ msgstr "Errore nel file dei sottotitoli: letto %1 ma era atteso %2"
 msgid "Error: %1"
 msgstr "Errore: %1"
 
-#: src/lib/hints.cc:408
+#: src/lib/hints.cc:405
 #, fuzzy
 msgid "Examining audio, subtitles and closed captions"
 msgstr "Esamino il contenuto"
@@ -880,7 +887,7 @@ msgstr "Analisi contenuto"
 msgid "Examining subtitles"
 msgstr "Trova sottotitoli"
 
-#: src/lib/hints.cc:406
+#: src/lib/hints.cc:403
 #, fuzzy
 msgid "Examining subtitles and closed captions"
 msgstr "Esamino il contenuto"
@@ -912,7 +919,7 @@ msgstr "Invio email fallito (%1)"
 msgid "Feature"
 msgstr "Lungometraggio"
 
-#: src/lib/content.cc:464
+#: src/lib/content.cc:468
 msgid "Filename"
 msgstr "Nome file"
 
@@ -924,11 +931,11 @@ msgstr "Film"
 msgid "Finding length"
 msgstr "Determina lunghezza"
 
-#: src/lib/content.cc:471
+#: src/lib/content.cc:475
 msgid "Frame rate"
 msgstr "Frequenza  fotogrammi"
 
-#: src/lib/util.cc:943
+#: src/lib/util.cc:946
 msgid "Friday"
 msgstr "Venerdì"
 
@@ -972,11 +979,11 @@ msgstr "Gamma 28 (BT470BG)"
 msgid "Gradient debander"
 msgstr "Gradiente debander"
 
-#: src/lib/util.cc:594
+#: src/lib/util.cc:597
 msgid "HI"
 msgstr "HI"
 
-#: src/lib/util.cc:563
+#: src/lib/util.cc:566
 msgid "Hearing impaired"
 msgstr "Non udenti"
 
@@ -1000,18 +1007,18 @@ msgstr "IEC61966-2-1 (sRGB o sYCC)"
 msgid "IEC61966-2-4"
 msgstr "IEC61966-2-4"
 
-#: src/lib/hints.cc:188
+#: src/lib/hints.cc:185
 msgid "If you do use 25fps you should change your DCP standard to SMPTE."
 msgstr ""
 
-#: src/lib/hints.cc:251
+#: src/lib/hints.cc:248
 msgid ""
 "In general it is now advisable to make SMPTE DCPs unless you have a "
 "particular reason to use Interop.  You are advised to set your DCP to use "
 "the SMPTE standard in the \"DCP\" tab."
 msgstr ""
 
-#: src/lib/hints.cc:573
+#: src/lib/hints.cc:570
 msgid ""
 "It is advisable to put your first subtitle at least 4 seconds after the "
 "start of the DCP to make sure it is seen."
@@ -1025,7 +1032,7 @@ msgstr "Non è chiaro cosa ha causato l'errore."
 msgid "JEDEC P22"
 msgstr "JEDEC P22"
 
-#: src/lib/config.cc:349 src/lib/config.cc:1099
+#: src/lib/config.cc:347 src/lib/config.cc:1099
 msgid "KDM delivery: $CPL_NAME"
 msgstr "Consegna KDM: $NOME_CPL"
 
@@ -1033,39 +1040,39 @@ msgstr "Consegna KDM: $NOME_CPL"
 msgid "Kernel deinterlacer"
 msgstr "Deinterlacciatore Kernel"
 
-#: src/lib/ffmpeg_encoder.cc:251 src/lib/util.cc:588
+#: src/lib/ffmpeg_encoder.cc:253 src/lib/util.cc:591
 msgid "L"
 msgstr "L"
 
-#: src/lib/util.cc:596
+#: src/lib/util.cc:599
 msgid "Lc"
 msgstr "Lc"
 
-#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:557
+#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:560
 msgid "Left"
 msgstr "Sinistro"
 
-#: src/lib/util.cc:565
+#: src/lib/util.cc:568
 msgid "Left centre"
 msgstr "Sinistro centro"
 
-#: src/lib/util.cc:567
+#: src/lib/util.cc:570
 msgid "Left rear surround"
 msgstr "Surround posteriore sinistro"
 
-#: src/lib/util.cc:561
+#: src/lib/util.cc:564
 msgid "Left surround"
 msgstr "Surround sinistro"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "Length"
 msgstr "Lunghezza"
 
-#: src/lib/util.cc:591
+#: src/lib/util.cc:594
 msgid "Lfe"
 msgstr "Lfe"
 
-#: src/lib/util.cc:560
+#: src/lib/util.cc:563
 msgid "Lfe (sub)"
 msgstr "Lfe (sub)"
 
@@ -1089,11 +1096,11 @@ msgstr "Logaritmico (ampiezza 100:1)"
 msgid "Logarithmic (316:1 range)"
 msgstr "Logaritmico (ampiezza 316:1)"
 
-#: src/lib/exceptions.cc:145
+#: src/lib/exceptions.cc:152
 msgid "Lost communication between main and writer processes"
 msgstr ""
 
-#: src/lib/util.cc:592
+#: src/lib/util.cc:595
 msgid "Ls"
 msgstr "Ls"
 
@@ -1105,19 +1112,19 @@ msgstr "Decodificatore Mid-Side"
 msgid "Misc"
 msgstr "Varie"
 
-#: src/lib/dcp_examiner.cc:164
+#: src/lib/dcp_examiner.cc:175
 msgid "Mismatched audio channel counts in DCP"
 msgstr "Il numero di canali audio nel DCP non corrisponde"
 
-#: src/lib/dcp_examiner.cc:170
+#: src/lib/dcp_examiner.cc:181
 msgid "Mismatched audio sample rates in DCP"
 msgstr "La frequenza di campionamento audio nel DCP non corrisponde"
 
-#: src/lib/dcp_examiner.cc:137
+#: src/lib/dcp_examiner.cc:145
 msgid "Mismatched frame rates in DCP"
 msgstr "La frequenza fotogrammi nel DCP non corrisponde"
 
-#: src/lib/dcp_examiner.cc:145
+#: src/lib/dcp_examiner.cc:153
 msgid "Mismatched video sizes in DCP"
 msgstr "La dimensione video nel DCP non corrisponde"
 
@@ -1125,11 +1132,11 @@ msgstr "La dimensione video nel DCP non corrisponde"
 msgid "Missing required setting %1"
 msgstr "Impostazione obbligatoria mancante %1"
 
-#: src/lib/util.cc:935
+#: src/lib/util.cc:938
 msgid "Monday"
 msgstr "Lunedì"
 
-#: src/lib/writer.cc:763
+#: src/lib/writer.cc:759
 msgid "Mono"
 msgstr "Mono"
 
@@ -1153,7 +1160,7 @@ msgstr "Nessun file immagine valido trovato nella cartella."
 msgid "Noise reduction"
 msgstr "Riduzione rumore"
 
-#: src/lib/writer.cc:731 src/lib/writer.cc:738 src/lib/writer.cc:761
+#: src/lib/writer.cc:727 src/lib/writer.cc:734 src/lib/writer.cc:757
 msgid "None"
 msgstr "Nulla"
 
@@ -1192,7 +1199,7 @@ msgstr "Analisi per la riduzione del rumore completata"
 msgid "P3"
 msgstr "P3"
 
-#: src/lib/util.h:59
+#: src/lib/util.h:64
 msgid ""
 "Please report this problem by using Help -> Report a problem or via email to "
 "carl@dcpomatic.com"
@@ -1202,7 +1209,7 @@ msgstr ""
 msgid "Policy"
 msgstr "Linea di condotta"
 
-#: src/lib/content.cc:480
+#: src/lib/content.cc:484
 msgid "Prepared for video frame rate"
 msgstr "Preparato per la frequenza fotogrammi del video"
 
@@ -1218,7 +1225,7 @@ msgstr ""
 msgid "Public Service Announcement"
 msgstr "Annuncio di pubblico servizio"
 
-#: src/lib/ffmpeg_encoder.cc:256 src/lib/util.cc:589
+#: src/lib/ffmpeg_encoder.cc:258 src/lib/util.cc:592
 msgid "R"
 msgstr "R"
 
@@ -1230,7 +1237,7 @@ msgstr "RGB / sRGB (IEC61966-2-1)"
 msgid "Rating"
 msgstr "Punteggio"
 
-#: src/lib/util.cc:597
+#: src/lib/util.cc:600
 msgid "Rc"
 msgstr "Rc"
 
@@ -1250,19 +1257,19 @@ msgstr "Rec. 601"
 msgid "Rec. 709"
 msgstr "Rec. 709"
 
-#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:558
+#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:561
 msgid "Right"
 msgstr "Destro"
 
-#: src/lib/util.cc:566
+#: src/lib/util.cc:569
 msgid "Right centre"
 msgstr "Destro centro"
 
-#: src/lib/util.cc:568
+#: src/lib/util.cc:571
 msgid "Right rear surround"
 msgstr "Surround posteriore destro"
 
-#: src/lib/util.cc:562
+#: src/lib/util.cc:565
 msgid "Right surround"
 msgstr "Surround destro"
 
@@ -1274,7 +1281,7 @@ msgstr "Ruota di 90 gradi in senso antiorario"
 msgid "Rotate 90 degrees clockwise"
 msgstr "Ruota di 90 gradi in senso orario"
 
-#: src/lib/util.cc:593
+#: src/lib/util.cc:596
 msgid "Rs"
 msgstr "Rs"
 
@@ -1299,7 +1306,7 @@ msgstr "SMPTE 2085, Y'D'zD'x"
 msgid "SMPTE 240M"
 msgstr "SMPTE 240M"
 
-#: src/lib/hints.cc:615
+#: src/lib/hints.cc:612
 msgid ""
 "SMPTE DCPs with the type FTR (feature) should have markers for the first "
 "frame of end credits (FFEC) and the first frame of moving credits (FFMC).  "
@@ -1337,7 +1344,7 @@ msgstr "Errore SSH (%1)"
 msgid "SSH error [%1] (%2)"
 msgstr "Errore SSH (%1)"
 
-#: src/lib/util.cc:945
+#: src/lib/util.cc:948
 msgid "Saturday"
 msgstr "Sabato"
 
@@ -1353,11 +1360,11 @@ msgstr "Invia e-mail"
 msgid "Short"
 msgstr "Corto"
 
-#: src/lib/util.cc:602
+#: src/lib/util.cc:605
 msgid "Sign"
 msgstr ""
 
-#: src/lib/video_content.cc:500
+#: src/lib/video_content.cc:510
 msgid "Size"
 msgstr "Dimensione"
 
@@ -1378,28 +1385,28 @@ msgid ""
 "project in DCP-o-matic, check the settings, then save it before trying again."
 msgstr ""
 
-#: src/lib/hints.cc:554
+#: src/lib/hints.cc:551
 msgid ""
 "Some of your closed captions span more than %1 lines, so they will be "
 "truncated."
 msgstr ""
 
-#: src/lib/hints.cc:653
+#: src/lib/hints.cc:650
 msgid ""
 "Some of your content has audio but you have not set the audio language.  It "
 "is advisable to set the audio language in the \"DCP\" tab unless your audio "
 "has no spoken parts."
 msgstr ""
 
-#: src/lib/film.cc:406
+#: src/lib/film.cc:417
 msgid "Some of your content needs a KDM"
 msgstr "Alcuni dei tuoi contenuti richiedono una KDM"
 
-#: src/lib/film.cc:409
+#: src/lib/film.cc:420
 msgid "Some of your content needs an OV"
 msgstr "Alcuni dei tuoi contenuti richiedono un OV"
 
-#: src/lib/writer.cc:765
+#: src/lib/writer.cc:761
 msgid "Stereo"
 msgstr "Stereo"
 
@@ -1411,7 +1418,7 @@ msgstr "Da Stereo a 5.1 up-mixer A"
 msgid "Stereo to 5.1 up-mixer B"
 msgstr "Da Stereo a 5.1 up-mixer B"
 
-#: src/lib/util.cc:933
+#: src/lib/util.cc:936
 msgid "Sunday"
 msgstr "Domenica"
 
@@ -1431,7 +1438,7 @@ msgstr "Test"
 msgid "Text subtitles"
 msgstr "Testo sottotitoli"
 
-#: src/lib/film.cc:389
+#: src/lib/film.cc:400
 msgid "The DCP is empty, perhaps because all the content has zero length."
 msgstr ""
 
@@ -1443,7 +1450,7 @@ msgstr "La catena del certificato per la firma non è valida"
 msgid "The certificate chain for signing is invalid (%1)"
 msgstr "La catena del certificato per la firma non è valida (%1)"
 
-#: src/lib/video_decoder.cc:86
+#: src/lib/video_decoder.cc:81
 msgid ""
 "The content file %1 is set as 3D but does not appear to contain 3D images.  "
 "Please set it to 2D.  You can still make a 3D DCP from this content by "
@@ -1474,7 +1481,7 @@ msgstr "Il file %1 é stato tagliato di %2 millisecondi in meno."
 msgid "The file %1 has been trimmed by %2 milliseconds more."
 msgstr "Il file %1 é stato tagliato di %2 millisecondi in piú."
 
-#: src/lib/hints.cc:241
+#: src/lib/hints.cc:238
 msgid ""
 "There is a large difference between the frame rate of your DCP and that of "
 "some of your content.  This will cause your audio to play back at a much "
@@ -1489,7 +1496,7 @@ msgstr ""
 "che i sistemi di proiezione selezionati supportino la frequenza del DCP "
 "scelta."
 
-#: src/lib/dcp_content.cc:657
+#: src/lib/dcp_content.cc:659
 msgid "There is no video in this DCP"
 msgstr "Nessun video in questo DCP"
 
@@ -1503,11 +1510,11 @@ msgstr ""
 "operativo a 32 bit, provare a ridurre il numero di thread di codifica nella "
 "scheda Generale delle Preferenze."
 
-#: src/lib/util.cc:1146
+#: src/lib/util.cc:1150
 msgid "This KDM was made for DCP-o-matic but not for its leaf certificate."
 msgstr ""
 
-#: src/lib/util.cc:1144
+#: src/lib/util.cc:1148
 msgid "This KDM was not made for DCP-o-matic's decryption certificate."
 msgstr ""
 
@@ -1534,7 +1541,7 @@ msgstr ""
 "Questo file è un KDM, deve essere aggiunti al contenuto DCP facendo clic con "
 "il pulsante destro del mouse sul contenuto e scegliendo \"Aggiungi KDM\"."
 
-#: src/lib/film.cc:581
+#: src/lib/film.cc:595
 msgid ""
 "This film was created with a newer version of DCP-o-matic, and it cannot be "
 "loaded into this version.  Sorry!"
@@ -1542,7 +1549,7 @@ msgstr ""
 "Questo film è stato creato con una versione più recente di DCP-o-matic e non "
 "può essere caricato in questa versione. Scusate!"
 
-#: src/lib/film.cc:566
+#: src/lib/film.cc:580
 msgid ""
 "This film was created with an older version of DCP-o-matic, and "
 "unfortunately it cannot be loaded into this version.  You will need to "
@@ -1553,7 +1560,7 @@ msgstr ""
 "nuovo film, aggiungere nuovamente i tuoi contenuti e configurarli "
 "nuovamente. Scusate!"
 
-#: src/lib/util.cc:941
+#: src/lib/util.cc:944
 msgid "Thursday"
 msgstr "Giovedì"
 
@@ -1574,7 +1581,7 @@ msgstr "Transcodifica %1"
 msgid "Transitional"
 msgstr "Di transizione"
 
-#: src/lib/util.cc:937
+#: src/lib/util.cc:940
 msgid "Tuesday"
 msgstr "Martedì"
 
@@ -1599,7 +1606,7 @@ msgstr "sconosciuto"
 msgid "Unknown error"
 msgstr "Errore sconosciuto"
 
-#: src/lib/ffmpeg_decoder.cc:343
+#: src/lib/ffmpeg_decoder.cc:339
 msgid "Unrecognised audio sample format (%1)"
 msgstr "Formato campionamento audio non riconosciuto (%1)"
 
@@ -1619,7 +1626,7 @@ msgstr "Non specificato"
 msgid "Untitled"
 msgstr "Senza titolo"
 
-#: src/lib/util.cc:571 src/lib/util.cc:572
+#: src/lib/util.cc:574 src/lib/util.cc:575
 msgid "Unused"
 msgstr "Non utilizzato"
 
@@ -1631,7 +1638,7 @@ msgstr "Upmix L"
 msgid "Upmix R"
 msgstr "Upmix R"
 
-#: src/lib/util.cc:595
+#: src/lib/util.cc:598
 msgid "VI"
 msgstr "VI"
 
@@ -1643,7 +1650,7 @@ msgstr "Verifica DCP"
 msgid "Vertical flip"
 msgstr "Vibrazione verticale"
 
-#: src/lib/util.cc:564
+#: src/lib/util.cc:567
 msgid "Visually impaired"
 msgstr "Visivamente alterata"
 
@@ -1655,7 +1662,7 @@ msgstr "Attendere"
 msgid "Weave filter"
 msgstr "Filtro Weave"
 
-#: src/lib/util.cc:939
+#: src/lib/util.cc:942
 msgid "Wednesday"
 msgstr "Mercoledì"
 
@@ -1667,7 +1674,7 @@ msgstr "YCOCG"
 msgid "Yet Another Deinterlacing Filter"
 msgstr "Altro filtro di deinterlacciamento"
 
-#: src/lib/hints.cc:201
+#: src/lib/hints.cc:198
 #, fuzzy
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
@@ -1678,7 +1685,7 @@ msgstr ""
 "supportata . Si consiglia di modificare la frequenza fotogrammi del DCP o di "
 "creare un DCP SMPTE."
 
-#: src/lib/hints.cc:185
+#: src/lib/hints.cc:182
 #, fuzzy
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
@@ -1689,7 +1696,7 @@ msgstr ""
 "supportata . Si consiglia di modificare la frequenza fotogrammi del DCP o di "
 "creare un DCP SMPTE."
 
-#: src/lib/hints.cc:195
+#: src/lib/hints.cc:192
 #, fuzzy
 msgid ""
 "You are set up for a DCP frame rate of 30fps, which is not supported by all "
@@ -1699,7 +1706,7 @@ msgstr ""
 "supportata . Si consiglia di modificare la frequenza fotogrammi del DCP o di "
 "creare un DCP SMPTE."
 
-#: src/lib/hints.cc:306
+#: src/lib/hints.cc:303
 msgid ""
 "You are using 3D content but your DCP is set to 2D.  Set the DCP to 3D if "
 "you want to play it back on a 3D system (e.g. Real-D, MasterImage etc.)"
@@ -1708,7 +1715,7 @@ msgstr ""
 "3D se vuoi vedere il contenuto su un vero sistema 3D (come Real-D, "
 "MasterImage, ecc.)"
 
-#: src/lib/hints.cc:122
+#: src/lib/hints.cc:119
 msgid ""
 "You are using DCP-o-matic's stereo-to-5.1 upmixer.  This is experimental and "
 "may result in poor-quality audio.  If you continue, you should listen to the "
@@ -1719,7 +1726,7 @@ msgstr ""
 "dovresti ascoltare il DCP creato in un cinema per assicurarti che il suono "
 "sia buono."
 
-#: src/lib/hints.cc:290
+#: src/lib/hints.cc:287
 msgid ""
 "You have %1 files that look like they are VOB files from DVD. You should "
 "join them to ensure smooth joins between the files."
@@ -1727,19 +1734,19 @@ msgstr ""
 "Hai %1 files che sembrano provenire da un DVD (files VOB). Dovresti unirli "
 "per assicurare una transizione senza salti."
 
-#: src/lib/film.cc:1529
+#: src/lib/film.cc:1578
 msgid ""
 "You have more than one piece of Atmos content, and they do not have the same "
 "frame rate.  You must remove some Atmos content."
 msgstr ""
 
-#: src/lib/hints.cc:561
+#: src/lib/hints.cc:558
 msgid ""
 "You have overlapping closed captions, which are not allowed in Interop "
 "DCPs.  Change your DCP standard to SMPTE."
 msgstr ""
 
-#: src/lib/hints.cc:274
+#: src/lib/hints.cc:271
 msgid ""
 "You have specified a font file which is larger than 640kB.  This is very "
 "likely to cause problems on playback."
@@ -1747,11 +1754,11 @@ msgstr ""
 "Hai specificato un font la cui dimensione supera i 640kB. Probabilmente ci "
 "saranno problemi nella riproduzione."
 
-#: src/lib/film.cc:385
+#: src/lib/film.cc:396
 msgid "You must add some content to the DCP before creating it"
 msgstr "Devi aggiungere dei contenuti al DCP prima di crearlo"
 
-#: src/lib/hints.cc:112
+#: src/lib/hints.cc:109
 msgid ""
 "Your DCP has fewer than 6 audio channels.  This may cause problems on some "
 "projectors.  You may want to set the DCP to have 6 channels.  It does not "
@@ -1759,7 +1766,7 @@ msgid ""
 "extras with silence."
 msgstr ""
 
-#: src/lib/hints.cc:160
+#: src/lib/hints.cc:157
 #, fuzzy
 msgid ""
 "Your DCP uses an unusual container ratio.  This may cause problems on some "
@@ -1769,7 +1776,7 @@ msgstr ""
 "causare problemi su alcuni proiettori. Se possibile, usa Flat o Scope come "
 "contenitore per il DCP"
 
-#: src/lib/hints.cc:340
+#: src/lib/hints.cc:337
 msgid ""
 "Your audio level is very high (on %1).  You should reduce the gain of your "
 "audio content."
@@ -1777,7 +1784,7 @@ msgstr ""
 "Il tuo livello audio è molto alto (su %1). Dovresti ridurre il guadagno del "
 "tuo contenuto audio."
 
-#: src/lib/config.cc:289
+#: src/lib/config.cc:287
 msgid ""
 "Your default container is not valid and has been changed to Flat (1.85:1)"
 msgstr "Contenitore non valido. Modificato automaticamente in Flat (1.85:1)"
@@ -1805,7 +1812,7 @@ msgstr "[spostamento immagini]"
 msgid "[still]"
 msgstr "[fermo immagine]"
 
-#: src/lib/dcp_subtitle_content.cc:97 src/lib/string_text_file_content.cc:78
+#: src/lib/dcp_subtitle_content.cc:98 src/lib/string_text_file_content.cc:78
 msgid "[subtitles]"
 msgstr "[sottotitoli]"
 
@@ -1823,11 +1830,11 @@ msgstr "connessione scaduta"
 msgid "connecting"
 msgstr "connessione in corso"
 
-#: src/lib/film.cc:381
+#: src/lib/film.cc:392
 msgid "container"
 msgstr "contenitore"
 
-#: src/lib/film.cc:393
+#: src/lib/film.cc:404
 msgid "content type"
 msgstr "tipo di contenuto"
 
@@ -1883,83 +1890,83 @@ msgstr "errore durante la lettura asincrona (%1)"
 msgid "error during async_write (%1)"
 msgstr "errore durante la scrittura asincrona (%1)"
 
-#: src/lib/content.cc:473 src/lib/content.cc:482
+#: src/lib/content.cc:477 src/lib/content.cc:486
 msgid "frames per second"
 msgstr "fotogrammi per secondo"
 
 #. / TRANSLATORS: h here is an abbreviation for hours
-#: src/lib/util.cc:200
+#: src/lib/util.cc:203
 msgid "h"
 msgstr "h"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:750
+#: src/lib/dcp_content.cc:752
 #, fuzzy
 msgid "it does not have closed captions in all its reels."
 msgstr "il DCP non ha sonoro in nessuna delle parti."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:739
+#: src/lib/dcp_content.cc:741
 #, fuzzy
 msgid "it does not have open subtitles in all its reels."
 msgstr "il DCP non ha sottotitoli in nessuna delle parti."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:706
+#: src/lib/dcp_content.cc:708
 msgid "it does not have sound in all its reels."
 msgstr "il DCP non ha sonoro in nessuna delle parti."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:610
+#: src/lib/dcp_content.cc:612
 msgid "it has a different frame rate to the film."
 msgstr "il DCP ha una frequenza fotogrammi diversa rispetto al film."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:765
+#: src/lib/dcp_content.cc:767
 msgid ""
 "it has a start trim so its subtitles or closed captions must be re-written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:667
+#: src/lib/dcp_content.cc:669
 #, fuzzy
 msgid "it is 2K and the film is 4K."
 msgstr "il film è impostato su Interop e questo DCP è SMPTE."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:664
+#: src/lib/dcp_content.cc:666
 #, fuzzy
 msgid "it is 4K and the film is 2K."
 msgstr "il film è impostato su Interop e questo DCP è SMPTE."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:598
+#: src/lib/dcp_content.cc:600
 msgid "it is Interop and the film is set to SMPTE."
 msgstr "il film è impostato su Interop e questo DCP è SMPTE."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:602
+#: src/lib/dcp_content.cc:604
 msgid "it is SMPTE and the film is set to Interop."
 msgstr "il film è impostato su SMPTE e questo DCP è Interop."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:712
+#: src/lib/dcp_content.cc:714
 msgid "it overlaps other audio content; remove the other content."
 msgstr "c'è un altro flusso audio che si sovrappone; rimuoverlo."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:770
+#: src/lib/dcp_content.cc:772
 #, fuzzy
 msgid "it overlaps other text content; remove the other content."
 msgstr "c'è un altro flusso video che si sovrappone; rimuoverlo."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:677
+#: src/lib/dcp_content.cc:679
 msgid "it overlaps other video content; remove the other content."
 msgstr "c'è un altro flusso video che si sovrappone; rimuoverlo."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:633
+#: src/lib/dcp_content.cc:635
 msgid ""
 "its reel lengths differ from those in the film; set the reel mode to 'split "
 "by video content'."
@@ -1968,12 +1975,12 @@ msgstr ""
 "bobina su \"dividi per contenuto video\"."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:672
+#: src/lib/dcp_content.cc:674
 msgid "its video frame size differs from the film's."
 msgstr "la dimensione del frame nel film è diversa da quella del DCP."
 
 #. / TRANSLATORS: m here is an abbreviation for minutes
-#: src/lib/util.cc:209
+#: src/lib/util.cc:212
 msgid "m"
 msgstr "m"
 
@@ -1981,26 +1988,26 @@ msgstr "m"
 msgid "moving"
 msgstr "spostamento"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "name"
 msgstr "nome"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:756
+#: src/lib/dcp_content.cc:758
 msgid ""
 "one of its closed caption has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:743
+#: src/lib/dcp_content.cc:745
 msgid ""
 "one of its subtitle reels has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: s here is an abbreviation for seconds
-#: src/lib/util.cc:219
+#: src/lib/util.cc:222
 msgid "s"
 msgstr "s"
 
@@ -2008,7 +2015,7 @@ msgstr "s"
 msgid "sRGB"
 msgstr "sRGB"
 
-#: src/lib/film.cc:402
+#: src/lib/film.cc:413
 msgid "some of your content is missing"
 msgstr "alcuni dei tuoi contenuti sono mancanti"
 
@@ -2020,7 +2027,7 @@ msgstr "fermo immagine"
 msgid "unknown"
 msgstr "sconosciuto"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "video frames"
 msgstr "fotogrammi video"
 
diff --git a/src/lib/po/nl_NL.po b/src/lib/po/nl_NL.po
index 2a2f245f6..7ad926587 100644
--- a/src/lib/po/nl_NL.po
+++ b/src/lib/po/nl_NL.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: DCP-o-matic\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-08-20 23:10+0200\n"
+"POT-Creation-Date: 2021-10-17 15:26+0200\n"
 "PO-Revision-Date: 2021-08-24 02:42+0200\n"
 "Last-Translator: Rob van Nieuwkerk <dcpomatic-translations@berrymount.nl>\n"
 "Language-Team: Rob van Nieuwkerk <dcpomatic-translations@berrymount.nl>\n"
@@ -18,7 +18,7 @@ msgstr ""
 "X-Generator: Poedit 2.3\n"
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
 
-#: src/lib/video_content.cc:486
+#: src/lib/video_content.cc:496
 #, c-format
 msgid ""
 "\n"
@@ -27,7 +27,7 @@ msgstr ""
 "\n"
 "Content frame rate %.4f\n"
 
-#: src/lib/video_content.cc:451
+#: src/lib/video_content.cc:461
 msgid ""
 "\n"
 "Cropped to %1x%2"
@@ -35,7 +35,7 @@ msgstr ""
 "\n"
 "Bijgesneden naar %1x%2"
 
-#: src/lib/video_content.cc:444
+#: src/lib/video_content.cc:452
 #, c-format
 msgid ""
 "\n"
@@ -44,7 +44,7 @@ msgstr ""
 "\n"
 "Weergave-beeldverhouding %.2f:1"
 
-#: src/lib/video_content.cc:474
+#: src/lib/video_content.cc:484
 msgid ""
 "\n"
 "Padded with black to fit container %1 (%2x%3)"
@@ -52,7 +52,7 @@ msgstr ""
 "\n"
 "Opgevuld met zwart om in container %1 (%2x%3) te passen"
 
-#: src/lib/video_content.cc:464
+#: src/lib/video_content.cc:474
 msgid ""
 "\n"
 "Scaled to %1x%2"
@@ -60,7 +60,7 @@ msgstr ""
 "\n"
 "Geschaald naar %1x%2"
 
-#: src/lib/video_content.cc:468 src/lib/video_content.cc:479
+#: src/lib/video_content.cc:478 src/lib/video_content.cc:489
 #, c-format
 msgid " (%.2f:1)"
 msgstr " (%.2f:1)"
@@ -105,7 +105,7 @@ msgstr "%1 (%2 GB) [%3]"
 msgid "%1 [Atmos]"
 msgstr "%1 [Atmos]"
 
-#: src/lib/dcp_content.cc:318
+#: src/lib/dcp_content.cc:320
 msgid "%1 [DCP]"
 msgstr "%1 [DCP]"
 
@@ -121,7 +121,7 @@ msgstr "%1 [video]"
 msgid "%1 [video]"
 msgstr "%1 [video]"
 
-#: src/lib/video_content.cc:439
+#: src/lib/video_content.cc:447
 #, c-format
 msgid ", pixel aspect ratio %.2f:1"
 msgstr ", pixel-beeldverhouding %.2f:1"
@@ -170,7 +170,7 @@ msgstr "2,39:1 (Scope)"
 msgid "3D denoiser"
 msgstr "3D-ruisonderdrukking"
 
-#: src/lib/hints.cc:212
+#: src/lib/hints.cc:209
 msgid ""
 "4K 3D is only supported by a very limited number of projectors.  Unless you "
 "know that you will play this DCP back on a capable projector, it is "
@@ -217,7 +217,7 @@ msgstr ""
 "\"https://dcpomatic.com/donate_amount?amount=10\">Ga naar Paypal om €10 te "
 "doneren</a></ul><p>Dank u wel!"
 
-#: src/lib/hints.cc:169
+#: src/lib/hints.cc:166
 msgid ""
 "A few projectors have problems playing back very high bit-rate DCPs.  It is "
 "a good idea to drop the JPEG2000 bandwidth down to about 200Mbit/s; this is "
@@ -228,6 +228,13 @@ msgstr ""
 "terug te brengen; dit heeft vrijwel zeker geen zichtbaar effect op de "
 "beeldkwaliteit."
 
+#: src/lib/text_content.cc:248
+msgid ""
+"A subtitle or closed caption file in this project is marked with the "
+"language '%1', which DCP-o-matic does not recognise.  The file's language "
+"has been cleared."
+msgstr ""
+
 #: src/lib/ffmpeg_content.cc:635
 msgid "ARIB STD-B67 ('Hybrid log-gamma')"
 msgstr "ARIB STD-B67 ('Hybrid Log-Gamma')"
@@ -236,7 +243,7 @@ msgstr "ARIB STD-B67 ('Hybrid Log-Gamma')"
 msgid "Advertisement"
 msgstr "Advertisement"
 
-#: src/lib/hints.cc:146
+#: src/lib/hints.cc:143
 msgid ""
 "All of your content is in Scope (2.39:1) but your DCP's container is Flat "
 "(1.85:1).  This will letter-box your content inside a Flat (1.85:1) frame.  "
@@ -248,7 +255,7 @@ msgstr ""
 "balken zullen komen.  Mogelijk wilt u de DCP-container op Scope (2,39:1) "
 "instellen bij de DCP-instellingen."
 
-#: src/lib/hints.cc:150
+#: src/lib/hints.cc:147
 msgid ""
 "All of your content narrower than 1.90:1 but your DCP's container is Scope "
 "(2.39:1).  This will pillar-box your content.  You may prefer to set your "
@@ -271,26 +278,26 @@ msgstr "Analyseren audio"
 msgid "Analysing subtitles"
 msgstr "Analyseren ondertitels"
 
-#: src/lib/hints.cc:368
+#: src/lib/hints.cc:365
 msgid ""
 "At least one marker comes after the end of the project and will be ignored."
 msgstr ""
 "Ten minste één marker komt na het einde van het project en wordt genegeerd."
 
-#: src/lib/hints.cc:473
+#: src/lib/hints.cc:470
 msgid "At least one of your closed caption files is larger than "
 msgstr "Ten minste één van uw closed caption bestanden is groter dan "
 
-#: src/lib/hints.cc:466
+#: src/lib/hints.cc:463
 msgid "At least one of your closed caption files' XML part is larger than "
 msgstr ""
 "Ten minste één XML-gedeelte van uw closed caption bestanden is groter dan "
 
-#: src/lib/hints.cc:481
+#: src/lib/hints.cc:478
 msgid "At least one of your subtitle files is larger than "
 msgstr "Ten minste één van uw ondertitelbestanden is groter dan "
 
-#: src/lib/hints.cc:445
+#: src/lib/hints.cc:442
 msgid ""
 "At least one of your subtitle lines has more than 52 characters.  It is "
 "recommended to make each line 52 characters at most in length."
@@ -298,7 +305,7 @@ msgstr ""
 "Ten minste één van uw ondertitel-regels heeft meer dan 52 tekens.  Het wordt "
 "aanbevolen om niet meer dan 52 tekens in een regel te gebruiken."
 
-#: src/lib/hints.cc:447
+#: src/lib/hints.cc:444
 msgid ""
 "At least one of your subtitle lines has more than 79 characters.  You should "
 "make each line 79 characters at most in length."
@@ -306,7 +313,7 @@ msgstr ""
 "Ten minste één van uw ondertitel-regels heeft meer dan 79 tekens.  U moet "
 "elke regel maximaal 79 tekens lang maken."
 
-#: src/lib/hints.cc:590
+#: src/lib/hints.cc:587
 msgid ""
 "At least one of your subtitles has more than 3 lines.  It is advisable to "
 "use no more than 3 lines."
@@ -314,7 +321,7 @@ msgstr ""
 "Ten minste één van uw ondertitels heeft meer dan 3 regels.  Het is "
 "verstandig om niet meer dan 3 regels te gebruiken."
 
-#: src/lib/hints.cc:580
+#: src/lib/hints.cc:577
 msgid ""
 "At least one of your subtitles lasts less than 15 frames.  It is advisable "
 "to make each subtitle at least 15 frames long."
@@ -322,7 +329,7 @@ msgstr ""
 "Ten minste één van uw ondertitels duurt minder dan 15 frames.  Het is "
 "verstandig om elke ondertitel minstens 15 frames lang te maken."
 
-#: src/lib/hints.cc:585
+#: src/lib/hints.cc:582
 msgid ""
 "At least one of your subtitles starts less than 2 frames after the previous "
 "one.  It is advisable to make the gap between subtitles at least 2 frames."
@@ -330,7 +337,7 @@ msgstr ""
 "Ten minste één van uw ondertitels begint minder dan 2 frames na de vorige.  "
 "Het is verstandig om minstens 2 frames tussen ondertitels te laten."
 
-#: src/lib/hints.cc:633
+#: src/lib/hints.cc:630
 msgid ""
 "At least one piece of subtitle or closed caption content has no specified "
 "language.  It is advisable to set the language for each piece of subtitle or "
@@ -407,15 +414,15 @@ msgstr "Bits per pixel"
 msgid "Bob Weaver Deinterlacing Filter"
 msgstr "Bob Weaver Deinterlacing Filter"
 
-#: src/lib/util.cc:598
+#: src/lib/util.cc:601
 msgid "BsL"
 msgstr "BsL"
 
-#: src/lib/util.cc:599
+#: src/lib/util.cc:602
 msgid "BsR"
 msgstr "BsR"
 
-#: src/lib/util.cc:590
+#: src/lib/util.cc:593
 msgid "C"
 msgstr "C"
 
@@ -423,7 +430,7 @@ msgstr "C"
 msgid "Cancelled"
 msgstr "Geannuleerd"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "Cannot contain slashes"
 msgstr "Mag geen slash bevatten"
 
@@ -431,11 +438,11 @@ msgstr "Mag geen slash bevatten"
 msgid "Cannot handle pixel format %1 during %2"
 msgstr "Kan pixelformaat %1 niet verwerken tijdens %2"
 
-#: src/lib/film.cc:1662
+#: src/lib/film.cc:1711
 msgid "Cannot make a KDM as this project is not encrypted."
 msgstr "Kan geen KDM maken omdat dit project niet is versleuteld."
 
-#: src/lib/util.cc:559
+#: src/lib/util.cc:562
 msgid "Centre"
 msgstr "Midden (C)"
 
@@ -503,7 +510,7 @@ msgstr "Combineer DCP's"
 msgid "Computing digest"
 msgstr "Berekenen samenvatting"
 
-#: src/lib/writer.cc:535
+#: src/lib/writer.cc:531
 msgid "Computing digests"
 msgstr "Berekenen samenvattingen"
 
@@ -537,26 +544,26 @@ msgstr ""
 "Samen te voegen content moet allemaal wel video, of allemaal geen video "
 "hebben"
 
-#: src/lib/text_content.cc:305
+#: src/lib/text_content.cc:320
 msgid ""
 "Content to be joined must both be main subtitle languages or both additional."
 msgstr ""
 "Samen te voegen content moet beide hoofd-ondertitelingstalen zijn of beide "
 "aanvullend."
 
-#: src/lib/video_content.cc:207
+#: src/lib/video_content.cc:210
 msgid "Content to be joined must have all its video used or not used."
 msgstr ""
 "Video van samen te voegen content moet allemaal wel, of allemaal niet "
 "gebruikt worden."
 
-#: src/lib/text_content.cc:260
+#: src/lib/text_content.cc:275
 msgid "Content to be joined must have the same 'burn subtitles' setting."
 msgstr ""
 "Samen te voegen content moeten dezelfde 'inbranden ondertitels'-instelling "
 "hebben."
 
-#: src/lib/text_content.cc:256
+#: src/lib/text_content.cc:271
 msgid "Content to be joined must have the same 'use subtitles' setting."
 msgstr ""
 "Samen te voegen content moet dezelfde 'gebruik ondertitels'-instelling "
@@ -570,69 +577,69 @@ msgstr "Samen te voegen content moet dezelfde audio-vertraging hebben."
 msgid "Content to be joined must have the same audio gain."
 msgstr "Samen te voegen content moet dezelfde audio-versterking hebben."
 
-#: src/lib/video_content.cc:239
+#: src/lib/video_content.cc:242
 msgid "Content to be joined must have the same burnt subtitle language."
 msgstr ""
 "Samen te voegen content moet dezelfde taal voor ingebrande ondertitels "
 "hebben."
 
-#: src/lib/video_content.cc:231
+#: src/lib/video_content.cc:234
 msgid "Content to be joined must have the same colour conversion."
 msgstr "Samen te voegen content moet dezelfde kleurconversie hebben."
 
-#: src/lib/video_content.cc:219
+#: src/lib/video_content.cc:222
 msgid "Content to be joined must have the same crop."
 msgstr "Samen te voegen content moet dezelfde bijsnijding hebben."
 
-#: src/lib/video_content.cc:223
+#: src/lib/video_content.cc:226
 msgid "Content to be joined must have the same custom ratio setting."
 msgstr ""
 "Samen te voegen content moet dezelfde instelling voor aangepaste "
 "beeldverhouding hebben."
 
-#: src/lib/video_content.cc:227
+#: src/lib/video_content.cc:230
 msgid "Content to be joined must have the same custom size setting."
 msgstr ""
 "Samen te voegen content moet dezelfde instelling voor aangepaste grootte "
 "hebben."
 
-#: src/lib/video_content.cc:235
+#: src/lib/video_content.cc:238
 msgid "Content to be joined must have the same fades."
 msgstr "Samen te voegen content moet dezelfde fade-instelling hebben."
 
-#: src/lib/text_content.cc:288
+#: src/lib/text_content.cc:303
 msgid "Content to be joined must have the same outline width."
 msgstr ""
 "Samen te voegen content moet dezelfde ondertitel omlijnings-breedte hebben."
 
-#: src/lib/video_content.cc:211
+#: src/lib/video_content.cc:214
 msgid "Content to be joined must have the same picture size."
 msgstr "Samen te voegen content moet dezelfde beeldgrootte hebben."
 
-#: src/lib/text_content.cc:264
+#: src/lib/text_content.cc:279
 msgid "Content to be joined must have the same subtitle X offset."
 msgstr ""
 "Samen te voegen content moet dezelfde ondertitel X-verschuiving hebben."
 
-#: src/lib/text_content.cc:272
+#: src/lib/text_content.cc:287
 msgid "Content to be joined must have the same subtitle X scale."
 msgstr "Samen te voegen content moet dezelfde ondertitel X-schaling hebben."
 
-#: src/lib/text_content.cc:268
+#: src/lib/text_content.cc:283
 msgid "Content to be joined must have the same subtitle Y offset."
 msgstr ""
 "Samen te voegen content moet dezelfde ondertitel Y-verschuiving hebben."
 
-#: src/lib/text_content.cc:276
+#: src/lib/text_content.cc:291
 msgid "Content to be joined must have the same subtitle Y scale."
 msgstr "Samen te voegen content moet dezelfde ondertitel Y-schaling hebben."
 
-#: src/lib/text_content.cc:284
+#: src/lib/text_content.cc:299
 msgid "Content to be joined must have the same subtitle fades."
 msgstr ""
 "Samen te voegen content moet dezelfde ondertitel fade-instelling hebben."
 
-#: src/lib/text_content.cc:280
+#: src/lib/text_content.cc:295
 msgid "Content to be joined must have the same subtitle line spacing."
 msgstr ""
 "Samen te voegen content moet dezelfde regelafstand voor ondertitels hebben."
@@ -641,15 +648,15 @@ msgstr ""
 msgid "Content to be joined must have the same video frame rate"
 msgstr "Samen te voegen content moet dezelfde video frame rate hebben"
 
-#: src/lib/video_content.cc:215
+#: src/lib/video_content.cc:218
 msgid "Content to be joined must have the same video frame type."
 msgstr "Samen te voegen content moet hetzelfde video frame type hebben."
 
-#: src/lib/text_content.cc:297
+#: src/lib/text_content.cc:312
 msgid "Content to be joined must use the same DCP track."
 msgstr "Samen te voegen content moet dezelfde DCP track gebruiken."
 
-#: src/lib/text_content.cc:293 src/lib/text_content.cc:313
+#: src/lib/text_content.cc:308 src/lib/text_content.cc:328
 msgid "Content to be joined must use the same fonts."
 msgstr "Samen te voegen content moet hetzelfde lettertype gebruiken."
 
@@ -657,11 +664,11 @@ msgstr "Samen te voegen content moet hetzelfde lettertype gebruiken."
 msgid "Content to be joined must use the same subtitle stream."
 msgstr "Samen te voegen content moet dezelfde ondertitel-stream gebruiken."
 
-#: src/lib/text_content.cc:301
+#: src/lib/text_content.cc:316
 msgid "Content to be joined must use the same text language."
 msgstr "Samen te voegen content moet dezelfde tekst-taal hebben."
 
-#: src/lib/video_content.cc:430
+#: src/lib/video_content.cc:438
 msgid "Content video is %1x%2"
 msgstr "Content-video is %1x%2"
 
@@ -685,7 +692,7 @@ msgstr "Kan geen verbinding maken met server %1 (%2)"
 msgid "Could not create remote directory %1 (%2)"
 msgstr "Kan externe map %1 niet aanmaken (%2)"
 
-#: src/lib/image_examiner.cc:65
+#: src/lib/image_examiner.cc:64
 msgid "Could not decode JPEG2000 file %1 (%2)"
 msgstr "Kan JPEG2000-bestand %1 niet decoderen (%2)"
 
@@ -721,7 +728,7 @@ msgstr "Kan gedownload ZIP-bestand niet openen (%1:%2: %3)"
 msgid "Could not open file for writing"
 msgstr "Kan bestand niet openen om te schrijven"
 
-#: src/lib/ffmpeg_file_encoder.cc:269
+#: src/lib/ffmpeg_file_encoder.cc:265
 msgid "Could not open output file %1 (%2)"
 msgstr "Kan output-bestand %1 niet openen (%2)"
 
@@ -737,19 +744,19 @@ msgstr "Kan overdracht niet starten"
 msgid "Could not write to remote file (%1)"
 msgstr "Kan extern bestand niet schrijven (%1)"
 
-#: src/lib/util.cc:569
+#: src/lib/util.cc:572
 msgid "D-BOX primary"
 msgstr "D-BOX primair (DBP)"
 
-#: src/lib/util.cc:570
+#: src/lib/util.cc:573
 msgid "D-BOX secondary"
 msgstr "D-BOX secundair (DBS)"
 
-#: src/lib/util.cc:600
+#: src/lib/util.cc:603
 msgid "DBP"
 msgstr "DBP"
 
-#: src/lib/util.cc:601
+#: src/lib/util.cc:604
 msgid "DBS"
 msgstr "DBS"
 
@@ -761,7 +768,7 @@ msgstr "DCI Flat"
 msgid "DCI Scope"
 msgstr "DCI Scope"
 
-#: src/lib/dcp_subtitle_content.cc:103
+#: src/lib/dcp_subtitle_content.cc:104
 msgid "DCP XML subtitles"
 msgstr "DCP XML ondertitels"
 
@@ -786,7 +793,7 @@ msgstr ""
 "DCP-o-matic kan het bestand %1 (%2) niet openen.  Misschien bestaat het niet "
 "of wordt het formaat niet ondersteund."
 
-#: src/lib/film.cc:1565
+#: src/lib/film.cc:1614
 msgid ""
 "DCP-o-matic had to change your settings for referring to DCPs as OV.  Please "
 "review those settings to make sure they are what you want."
@@ -795,7 +802,7 @@ msgstr ""
 "Controleer a.u.b. deze instellingen om er zeker van te zijn dat ze zijn "
 "zoals u wilt."
 
-#: src/lib/film.cc:1533
+#: src/lib/film.cc:1582
 msgid ""
 "DCP-o-matic had to change your settings so that the film's frame rate is the "
 "same as that of your Atmos content."
@@ -810,7 +817,7 @@ msgstr ""
 "DCP-o-matic ondersteunt het filter `%1' niet langer, daarom is het "
 "uitgeschakeld."
 
-#: src/lib/config.cc:359 src/lib/config.cc:1114
+#: src/lib/config.cc:357 src/lib/config.cc:1114
 msgid "DCP-o-matic notification"
 msgstr "DCP-o-matic notificatie"
 
@@ -901,7 +908,7 @@ msgstr "Fout in ondertitelbestand: %1 gelezen terwijl %2 verwacht werd"
 msgid "Error: %1"
 msgstr "Fout: %1"
 
-#: src/lib/hints.cc:408
+#: src/lib/hints.cc:405
 msgid "Examining audio, subtitles and closed captions"
 msgstr "Onderzoeken audio, ondertitels en closed captions"
 
@@ -913,7 +920,7 @@ msgstr "Onderzoeken content"
 msgid "Examining subtitles"
 msgstr "Onderzoeken ondertitels"
 
-#: src/lib/hints.cc:406
+#: src/lib/hints.cc:403
 msgid "Examining subtitles and closed captions"
 msgstr "Onderzoeken ondertitels en closed captions"
 
@@ -941,7 +948,7 @@ msgstr "Verzenden e-mail mislukt"
 msgid "Feature"
 msgstr "Feature"
 
-#: src/lib/content.cc:464
+#: src/lib/content.cc:468
 msgid "Filename"
 msgstr "Bestandsnaam"
 
@@ -953,11 +960,11 @@ msgstr "Film"
 msgid "Finding length"
 msgstr "Bepalen lengte"
 
-#: src/lib/content.cc:471
+#: src/lib/content.cc:475
 msgid "Frame rate"
 msgstr "Frame rate"
 
-#: src/lib/util.cc:943
+#: src/lib/util.cc:946
 msgid "Friday"
 msgstr "Vrijdag"
 
@@ -1001,11 +1008,11 @@ msgstr "Gamma 28 (BT470BG)"
 msgid "Gradient debander"
 msgstr "Gradient debander"
 
-#: src/lib/util.cc:594
+#: src/lib/util.cc:597
 msgid "HI"
 msgstr "HI"
 
-#: src/lib/util.cc:563
+#: src/lib/util.cc:566
 msgid "Hearing impaired"
 msgstr "Slechthorenden (HI)"
 
@@ -1029,13 +1036,13 @@ msgstr "IEC61966-2-1 (sRGB of sYCC)"
 msgid "IEC61966-2-4"
 msgstr "IEC61966-2-4"
 
-#: src/lib/hints.cc:188
+#: src/lib/hints.cc:185
 msgid "If you do use 25fps you should change your DCP standard to SMPTE."
 msgstr ""
 "Als u een frame rate van 25 fps gebruikt, moet u de DCP-standaard wijzigen "
 "in SMPTE."
 
-#: src/lib/hints.cc:251
+#: src/lib/hints.cc:248
 msgid ""
 "In general it is now advisable to make SMPTE DCPs unless you have a "
 "particular reason to use Interop.  You are advised to set your DCP to use "
@@ -1045,7 +1052,7 @@ msgstr ""
 "bepaalde reden heeft om Interop te gebruiken.  U wordt geadviseerd om de DCP-"
 "standaard op SMPTE in te stellen in het \"DCP\"-tabblad."
 
-#: src/lib/hints.cc:573
+#: src/lib/hints.cc:570
 msgid ""
 "It is advisable to put your first subtitle at least 4 seconds after the "
 "start of the DCP to make sure it is seen."
@@ -1061,7 +1068,7 @@ msgstr "Het is onbekend hoe deze fout is ontstaan."
 msgid "JEDEC P22"
 msgstr "JEDEC P22"
 
-#: src/lib/config.cc:349 src/lib/config.cc:1099
+#: src/lib/config.cc:347 src/lib/config.cc:1099
 msgid "KDM delivery: $CPL_NAME"
 msgstr "KDM-levering: $CPL_NAME"
 
@@ -1069,39 +1076,39 @@ msgstr "KDM-levering: $CPL_NAME"
 msgid "Kernel deinterlacer"
 msgstr "Kernel deinterlacer"
 
-#: src/lib/ffmpeg_encoder.cc:251 src/lib/util.cc:588
+#: src/lib/ffmpeg_encoder.cc:253 src/lib/util.cc:591
 msgid "L"
 msgstr "L"
 
-#: src/lib/util.cc:596
+#: src/lib/util.cc:599
 msgid "Lc"
 msgstr "Lc"
 
-#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:557
+#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:560
 msgid "Left"
 msgstr "Links (L)"
 
-#: src/lib/util.cc:565
+#: src/lib/util.cc:568
 msgid "Left centre"
 msgstr "Links midden (Lc)"
 
-#: src/lib/util.cc:567
+#: src/lib/util.cc:570
 msgid "Left rear surround"
 msgstr "Achter surround links (BsL)"
 
-#: src/lib/util.cc:561
+#: src/lib/util.cc:564
 msgid "Left surround"
 msgstr "Links surround (Ls)"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "Length"
 msgstr "Lengte"
 
-#: src/lib/util.cc:591
+#: src/lib/util.cc:594
 msgid "Lfe"
 msgstr "Lfe"
 
-#: src/lib/util.cc:560
+#: src/lib/util.cc:563
 msgid "Lfe (sub)"
 msgstr "Subwoofer (Lfe)"
 
@@ -1125,11 +1132,11 @@ msgstr "Logaritmisch (100: 1 bereik)"
 msgid "Logarithmic (316:1 range)"
 msgstr "Logaritmisch (316: 1 bereik)"
 
-#: src/lib/exceptions.cc:145
+#: src/lib/exceptions.cc:152
 msgid "Lost communication between main and writer processes"
 msgstr "Verbroken communicatie tussen hoofd- en schrijfprocessen"
 
-#: src/lib/util.cc:592
+#: src/lib/util.cc:595
 msgid "Ls"
 msgstr "Ls"
 
@@ -1141,19 +1148,19 @@ msgstr "Midden-zijkant decoder"
 msgid "Misc"
 msgstr "Diversen"
 
-#: src/lib/dcp_examiner.cc:164
+#: src/lib/dcp_examiner.cc:175
 msgid "Mismatched audio channel counts in DCP"
 msgstr "Ongelijke aantallen audio-kanalen in DCP"
 
-#: src/lib/dcp_examiner.cc:170
+#: src/lib/dcp_examiner.cc:181
 msgid "Mismatched audio sample rates in DCP"
 msgstr "Ongelijke audio sample rates in DCP"
 
-#: src/lib/dcp_examiner.cc:137
+#: src/lib/dcp_examiner.cc:145
 msgid "Mismatched frame rates in DCP"
 msgstr "Ongelijke frame rates in DCP"
 
-#: src/lib/dcp_examiner.cc:145
+#: src/lib/dcp_examiner.cc:153
 msgid "Mismatched video sizes in DCP"
 msgstr "Ongelijke beeldgroottes in DCP"
 
@@ -1161,11 +1168,11 @@ msgstr "Ongelijke beeldgroottes in DCP"
 msgid "Missing required setting %1"
 msgstr "Ontbrekende verplichte instelling %1"
 
-#: src/lib/util.cc:935
+#: src/lib/util.cc:938
 msgid "Monday"
 msgstr "Maandag"
 
-#: src/lib/writer.cc:763
+#: src/lib/writer.cc:759
 msgid "Mono"
 msgstr "Mono"
 
@@ -1189,7 +1196,7 @@ msgstr "Geen geldige beeldbestanden gevonden in de map."
 msgid "Noise reduction"
 msgstr "Ruisonderdrukking"
 
-#: src/lib/writer.cc:731 src/lib/writer.cc:738 src/lib/writer.cc:761
+#: src/lib/writer.cc:727 src/lib/writer.cc:734 src/lib/writer.cc:757
 msgid "None"
 msgstr "Geen"
 
@@ -1230,7 +1237,7 @@ msgstr "Overcomplete wavelet denoiser"
 msgid "P3"
 msgstr "P3"
 
-#: src/lib/util.h:59
+#: src/lib/util.h:64
 msgid ""
 "Please report this problem by using Help -> Report a problem or via email to "
 "carl@dcpomatic.com"
@@ -1242,7 +1249,7 @@ msgstr ""
 msgid "Policy"
 msgstr "Policy"
 
-#: src/lib/content.cc:480
+#: src/lib/content.cc:484
 msgid "Prepared for video frame rate"
 msgstr "Voorbereid voor video frame rate"
 
@@ -1258,7 +1265,7 @@ msgstr "Promo"
 msgid "Public Service Announcement"
 msgstr "Public Service Announcement"
 
-#: src/lib/ffmpeg_encoder.cc:256 src/lib/util.cc:589
+#: src/lib/ffmpeg_encoder.cc:258 src/lib/util.cc:592
 msgid "R"
 msgstr "R"
 
@@ -1270,7 +1277,7 @@ msgstr "RGB / sRGB (IEC61966-2-1)"
 msgid "Rating"
 msgstr "Rating"
 
-#: src/lib/util.cc:597
+#: src/lib/util.cc:600
 msgid "Rc"
 msgstr "Rc"
 
@@ -1290,19 +1297,19 @@ msgstr "Rec. 601"
 msgid "Rec. 709"
 msgstr "Rec. 709"
 
-#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:558
+#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:561
 msgid "Right"
 msgstr "Rechts (R)"
 
-#: src/lib/util.cc:566
+#: src/lib/util.cc:569
 msgid "Right centre"
 msgstr "Rechts midden (Rc)"
 
-#: src/lib/util.cc:568
+#: src/lib/util.cc:571
 msgid "Right rear surround"
 msgstr "Achter surround rechts (Bsr)"
 
-#: src/lib/util.cc:562
+#: src/lib/util.cc:565
 msgid "Right surround"
 msgstr "Rechts surround (Rs)"
 
@@ -1314,7 +1321,7 @@ msgstr "Roteer 90 graden tegen de klok in"
 msgid "Rotate 90 degrees clockwise"
 msgstr "Roteer 90 graden met de klok mee"
 
-#: src/lib/util.cc:593
+#: src/lib/util.cc:596
 msgid "Rs"
 msgstr "Rs"
 
@@ -1339,7 +1346,7 @@ msgstr "SMPTE 2085, Y'D'zD'x"
 msgid "SMPTE 240M"
 msgstr "SMPTE 240M"
 
-#: src/lib/hints.cc:615
+#: src/lib/hints.cc:612
 msgid ""
 "SMPTE DCPs with the type FTR (feature) should have markers for the first "
 "frame of end credits (FFEC) and the first frame of moving credits (FFMC).  "
@@ -1379,7 +1386,7 @@ msgstr "SSH-fout [%1]"
 msgid "SSH error [%1] (%2)"
 msgstr "SSH-fout [%1] (%2)"
 
-#: src/lib/util.cc:945
+#: src/lib/util.cc:948
 msgid "Saturday"
 msgstr "Zaterdag"
 
@@ -1395,11 +1402,11 @@ msgstr "Verzenden e-mail"
 msgid "Short"
 msgstr "Short"
 
-#: src/lib/util.cc:602
+#: src/lib/util.cc:605
 msgid "Sign"
 msgstr "Sign"
 
-#: src/lib/video_content.cc:500
+#: src/lib/video_content.cc:510
 msgid "Size"
 msgstr "Grootte"
 
@@ -1427,7 +1434,7 @@ msgstr ""
 "Open het project in DCP-o-matic, controleer de instellingen en bewaar "
 "voordat u het opnieuw probeert."
 
-#: src/lib/hints.cc:554
+#: src/lib/hints.cc:551
 msgid ""
 "Some of your closed captions span more than %1 lines, so they will be "
 "truncated."
@@ -1435,7 +1442,7 @@ msgstr ""
 "Een deel van uw closed captions heeft meer dan %1 regels, dus worden ze "
 "afgekapt."
 
-#: src/lib/hints.cc:653
+#: src/lib/hints.cc:650
 msgid ""
 "Some of your content has audio but you have not set the audio language.  It "
 "is advisable to set the audio language in the \"DCP\" tab unless your audio "
@@ -1445,15 +1452,15 @@ msgstr ""
 "ingesteld.  Het is raadzaam om de audio-taal in te stellen in het \"DCP\"-"
 "tabblad, tenzij uw audio geen gesproken delen heeft."
 
-#: src/lib/film.cc:406
+#: src/lib/film.cc:417
 msgid "Some of your content needs a KDM"
 msgstr "Een deel van uw content heeft een KDM nodig"
 
-#: src/lib/film.cc:409
+#: src/lib/film.cc:420
 msgid "Some of your content needs an OV"
 msgstr "Een deel van uw content heeft een OV nodig"
 
-#: src/lib/writer.cc:765
+#: src/lib/writer.cc:761
 msgid "Stereo"
 msgstr "Stereo"
 
@@ -1465,7 +1472,7 @@ msgstr "Stereo naar 5.1 up-mixer A"
 msgid "Stereo to 5.1 up-mixer B"
 msgstr "Stereo naar 5.1 up-mixer B"
 
-#: src/lib/util.cc:933
+#: src/lib/util.cc:936
 msgid "Sunday"
 msgstr "Zondag"
 
@@ -1485,7 +1492,7 @@ msgstr "Test"
 msgid "Text subtitles"
 msgstr "Tekst-ondertitels"
 
-#: src/lib/film.cc:389
+#: src/lib/film.cc:400
 msgid "The DCP is empty, perhaps because all the content has zero length."
 msgstr "De DCP is leeg, misschien omdat alle content lengte nul heeft."
 
@@ -1497,7 +1504,7 @@ msgstr "De certificaat-keten voor ondertekening is ongeldig"
 msgid "The certificate chain for signing is invalid (%1)"
 msgstr "De certificaat-keten voor ondertekening is ongeldig (%1)"
 
-#: src/lib/video_decoder.cc:86
+#: src/lib/video_decoder.cc:81
 msgid ""
 "The content file %1 is set as 3D but does not appear to contain 3D images.  "
 "Please set it to 2D.  You can still make a 3D DCP from this content by "
@@ -1531,7 +1538,7 @@ msgstr "Van het bestand %1 is %2 milliseconden minder weggeknipt."
 msgid "The file %1 has been trimmed by %2 milliseconds more."
 msgstr "Van het bestand %1 is %2 milliseconden meer weggeknipt."
 
-#: src/lib/hints.cc:241
+#: src/lib/hints.cc:238
 msgid ""
 "There is a large difference between the frame rate of your DCP and that of "
 "some of your content.  This will cause your audio to play back at a much "
@@ -1546,7 +1553,7 @@ msgstr ""
 "op voorwaarde dat uw doelprojectiesystemen de door u gekozen DCP frame rate "
 "ondersteunen."
 
-#: src/lib/dcp_content.cc:657
+#: src/lib/dcp_content.cc:659
 msgid "There is no video in this DCP"
 msgstr "Deze DCP heeft geen video"
 
@@ -1560,12 +1567,12 @@ msgstr ""
 "threads te verminderen in het \"Algemeen\"-tabblad bij Voorkeuren als u een "
 "32-bit operating system draait."
 
-#: src/lib/util.cc:1146
+#: src/lib/util.cc:1150
 msgid "This KDM was made for DCP-o-matic but not for its leaf certificate."
 msgstr ""
 "Deze KDM is gemaakt voor DCP-o-matic maar niet voor het leaf-certificaat."
 
-#: src/lib/util.cc:1144
+#: src/lib/util.cc:1148
 msgid "This KDM was not made for DCP-o-matic's decryption certificate."
 msgstr ""
 "Deze KDM is niet gemaakt voor het ontsleutelings-certificaat van DCP-o-matic."
@@ -1601,7 +1608,7 @@ msgstr ""
 "met de rechtermuisknop op de content te klikken en \"Voeg KDM toe\" te "
 "kiezen."
 
-#: src/lib/film.cc:581
+#: src/lib/film.cc:595
 msgid ""
 "This film was created with a newer version of DCP-o-matic, and it cannot be "
 "loaded into this version.  Sorry!"
@@ -1609,7 +1616,7 @@ msgstr ""
 "Deze film is aangemaakt met een nieuwere versie van DCP-o-matic en kan niet "
 "met deze versie geladen worden. Sorry!"
 
-#: src/lib/film.cc:566
+#: src/lib/film.cc:580
 msgid ""
 "This film was created with an older version of DCP-o-matic, and "
 "unfortunately it cannot be loaded into this version.  You will need to "
@@ -1619,7 +1626,7 @@ msgstr ""
 "met deze versie geladen worden.  U moet een nieuwe film aanmaken en de "
 "content opnieuw toevoegen en configureren. Sorry!"
 
-#: src/lib/util.cc:941
+#: src/lib/util.cc:944
 msgid "Thursday"
 msgstr "Donderdag"
 
@@ -1639,7 +1646,7 @@ msgstr "Transcoderen %1"
 msgid "Transitional"
 msgstr "Transitional"
 
-#: src/lib/util.cc:937
+#: src/lib/util.cc:940
 msgid "Tuesday"
 msgstr "Dinsdag"
 
@@ -1663,7 +1670,7 @@ msgstr "Onbekend"
 msgid "Unknown error"
 msgstr "Onbekende fout"
 
-#: src/lib/ffmpeg_decoder.cc:343
+#: src/lib/ffmpeg_decoder.cc:339
 msgid "Unrecognised audio sample format (%1)"
 msgstr "Niet herkend audio sample-formaat (%1)"
 
@@ -1683,7 +1690,7 @@ msgstr "Niet gespecificeerd"
 msgid "Untitled"
 msgstr "Zonder titel"
 
-#: src/lib/util.cc:571 src/lib/util.cc:572
+#: src/lib/util.cc:574 src/lib/util.cc:575
 msgid "Unused"
 msgstr "Ongebruikt"
 
@@ -1695,7 +1702,7 @@ msgstr "Upmix L"
 msgid "Upmix R"
 msgstr "Upmix R"
 
-#: src/lib/util.cc:595
+#: src/lib/util.cc:598
 msgid "VI"
 msgstr "VI"
 
@@ -1707,7 +1714,7 @@ msgstr "Controleer DCP"
 msgid "Vertical flip"
 msgstr "Spiegel verticaal"
 
-#: src/lib/util.cc:564
+#: src/lib/util.cc:567
 msgid "Visually impaired"
 msgstr "Slechtzienden (VI)"
 
@@ -1719,7 +1726,7 @@ msgstr "Wachten"
 msgid "Weave filter"
 msgstr "Weave-filter"
 
-#: src/lib/util.cc:939
+#: src/lib/util.cc:942
 msgid "Wednesday"
 msgstr "Woensdag"
 
@@ -1731,7 +1738,7 @@ msgstr "YCOCG"
 msgid "Yet Another Deinterlacing Filter"
 msgstr "Yet Another Deinterlacing Filter"
 
-#: src/lib/hints.cc:201
+#: src/lib/hints.cc:198
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You are advised to change the DCP frame rate "
@@ -1741,7 +1748,7 @@ msgstr ""
 "wordt niet door alle projectoren ondersteund.  U wordt geadviseerd om de DCP "
 "frame rate te wijzigen in %2 fps."
 
-#: src/lib/hints.cc:185
+#: src/lib/hints.cc:182
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You may want to consider changing your frame "
@@ -1751,7 +1758,7 @@ msgstr ""
 "wordt niet door alle projectoren ondersteund.  U kunt overwegen om de DCP "
 "frame rate te wijzigen in %2 fps."
 
-#: src/lib/hints.cc:195
+#: src/lib/hints.cc:192
 msgid ""
 "You are set up for a DCP frame rate of 30fps, which is not supported by all "
 "projectors.  Be aware that you may have compatibility problems."
@@ -1760,7 +1767,7 @@ msgstr ""
 "wordt niet door alle projectoren ondersteund.  Houd er rekening mee dat u "
 "compatibiliteitsproblemen kunt krijgen."
 
-#: src/lib/hints.cc:306
+#: src/lib/hints.cc:303
 msgid ""
 "You are using 3D content but your DCP is set to 2D.  Set the DCP to 3D if "
 "you want to play it back on a 3D system (e.g. Real-D, MasterImage etc.)"
@@ -1768,7 +1775,7 @@ msgstr ""
 "U gebruikt 3D-content, maar uw DCP is op 2D ingesteld.  Stel de DCP in op 3D "
 "als u hem wilt afspelen op een 3D-systeem (bv. Real-D, MasterImage etc.)"
 
-#: src/lib/hints.cc:122
+#: src/lib/hints.cc:119
 msgid ""
 "You are using DCP-o-matic's stereo-to-5.1 upmixer.  This is experimental and "
 "may result in poor-quality audio.  If you continue, you should listen to the "
@@ -1779,7 +1786,7 @@ msgstr ""
 "doorgaat, kunt u beter in een bioscoop naar de resulterende DCP luisteren om "
 "er zeker van te zijn dat het goed klinkt."
 
-#: src/lib/hints.cc:290
+#: src/lib/hints.cc:287
 msgid ""
 "You have %1 files that look like they are VOB files from DVD. You should "
 "join them to ensure smooth joins between the files."
@@ -1787,7 +1794,7 @@ msgstr ""
 "U heeft %1 bestanden die VOB-bestanden van een DVD lijken te zijn.  U kunt "
 "deze beter samenvoegen om van soepele aansluitingen verzekerd te zijn."
 
-#: src/lib/film.cc:1529
+#: src/lib/film.cc:1578
 msgid ""
 "You have more than one piece of Atmos content, and they do not have the same "
 "frame rate.  You must remove some Atmos content."
@@ -1795,7 +1802,7 @@ msgstr ""
 "U heeft meer dan één stuk Atmos-content en ze hebben niet dezelfde frame "
 "rate.  U moet een deel van de Atmos-content verwijderen."
 
-#: src/lib/hints.cc:561
+#: src/lib/hints.cc:558
 msgid ""
 "You have overlapping closed captions, which are not allowed in Interop "
 "DCPs.  Change your DCP standard to SMPTE."
@@ -1803,7 +1810,7 @@ msgstr ""
 "U heeft overlappende closed captions.  Die zijn niet toegestaan in Interop "
 "DCP's.  Verander uw DCP-standaard in SMPTE."
 
-#: src/lib/hints.cc:274
+#: src/lib/hints.cc:271
 msgid ""
 "You have specified a font file which is larger than 640kB.  This is very "
 "likely to cause problems on playback."
@@ -1811,11 +1818,11 @@ msgstr ""
 "U heeft een lettertype-bestand gespecificeerd dat groter is dan 640kB.  Dit "
 "zal zeer waarschijnlijk problemen bij het afspelen geven."
 
-#: src/lib/film.cc:385
+#: src/lib/film.cc:396
 msgid "You must add some content to the DCP before creating it"
 msgstr "U moet content aan de DCP toevoegen voor hij gemaakt kan worden"
 
-#: src/lib/hints.cc:112
+#: src/lib/hints.cc:109
 msgid ""
 "Your DCP has fewer than 6 audio channels.  This may cause problems on some "
 "projectors.  You may want to set the DCP to have 6 channels.  It does not "
@@ -1827,7 +1834,7 @@ msgstr ""
 "maakt niet uit of uw content minder kanalen heeft, DCP-o-matic vult de extra "
 "kanalen met stilte."
 
-#: src/lib/hints.cc:160
+#: src/lib/hints.cc:157
 msgid ""
 "Your DCP uses an unusual container ratio.  This may cause problems on some "
 "projectors.  If possible, use Flat or Scope for the DCP container ratio."
@@ -1836,7 +1843,7 @@ msgstr ""
 "problemen geven met sommige projectoren.  Gebruik, indien mogelijk, Flat of "
 "Scope voor de container-beeldverhouding van de DCP."
 
-#: src/lib/hints.cc:340
+#: src/lib/hints.cc:337
 msgid ""
 "Your audio level is very high (on %1).  You should reduce the gain of your "
 "audio content."
@@ -1844,7 +1851,7 @@ msgstr ""
 "Uw audio-niveau is zeer hoog (op %1).  U kunt beter de versterking van uw "
 "audio-content verminderen."
 
-#: src/lib/config.cc:289
+#: src/lib/config.cc:287
 msgid ""
 "Your default container is not valid and has been changed to Flat (1.85:1)"
 msgstr "Uw standaardcontainer is niet geldig en is gewijzigd in Flat (1,85:1)"
@@ -1871,7 +1878,7 @@ msgstr "[bewegende beelden]"
 msgid "[still]"
 msgstr "[stilstaand beeld]"
 
-#: src/lib/dcp_subtitle_content.cc:97 src/lib/string_text_file_content.cc:78
+#: src/lib/dcp_subtitle_content.cc:98 src/lib/string_text_file_content.cc:78
 msgid "[subtitles]"
 msgstr "[ondertitels]"
 
@@ -1889,11 +1896,11 @@ msgstr "time-out van verbinding"
 msgid "connecting"
 msgstr "verbinden"
 
-#: src/lib/film.cc:381
+#: src/lib/film.cc:392
 msgid "container"
 msgstr "container"
 
-#: src/lib/film.cc:393
+#: src/lib/film.cc:404
 msgid "content type"
 msgstr "content-type"
 
@@ -1945,37 +1952,37 @@ msgstr "fout tijdens async_read (%1)"
 msgid "error during async_write (%1)"
 msgstr "fout tijdens async_write (%1)"
 
-#: src/lib/content.cc:473 src/lib/content.cc:482
+#: src/lib/content.cc:477 src/lib/content.cc:486
 msgid "frames per second"
 msgstr "frames per seconde"
 
 #. / TRANSLATORS: h here is an abbreviation for hours
-#: src/lib/util.cc:200
+#: src/lib/util.cc:203
 msgid "h"
 msgstr "h"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:750
+#: src/lib/dcp_content.cc:752
 msgid "it does not have closed captions in all its reels."
 msgstr "hij heeft niet closed captions in alle reels."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:739
+#: src/lib/dcp_content.cc:741
 msgid "it does not have open subtitles in all its reels."
 msgstr "hij heeft niet open ondertitels in alle reels."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:706
+#: src/lib/dcp_content.cc:708
 msgid "it does not have sound in all its reels."
 msgstr "hij heeft niet audio in alle reels."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:610
+#: src/lib/dcp_content.cc:612
 msgid "it has a different frame rate to the film."
 msgstr "hij heeft een andere frame rate dan de film."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:765
+#: src/lib/dcp_content.cc:767
 msgid ""
 "it has a start trim so its subtitles or closed captions must be re-written."
 msgstr ""
@@ -1983,42 +1990,42 @@ msgstr ""
 "captions moeten opnieuw geschreven worden."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:667
+#: src/lib/dcp_content.cc:669
 msgid "it is 2K and the film is 4K."
 msgstr "hij is 2K en de film is 4k."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:664
+#: src/lib/dcp_content.cc:666
 msgid "it is 4K and the film is 2K."
 msgstr "hij is 4K en de film is 2K."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:598
+#: src/lib/dcp_content.cc:600
 msgid "it is Interop and the film is set to SMPTE."
 msgstr "hij is Interop en de film is SMPTE."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:602
+#: src/lib/dcp_content.cc:604
 msgid "it is SMPTE and the film is set to Interop."
 msgstr "hij is SMPTE en de film is Interop."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:712
+#: src/lib/dcp_content.cc:714
 msgid "it overlaps other audio content; remove the other content."
 msgstr "hij overlapt met andere audio-content; verwijder deze andere content."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:770
+#: src/lib/dcp_content.cc:772
 msgid "it overlaps other text content; remove the other content."
 msgstr "hij overlapt met andere tekst-content; verwijder deze andere content."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:677
+#: src/lib/dcp_content.cc:679
 msgid "it overlaps other video content; remove the other content."
 msgstr "hij overlapt met andere video-content; verwijder deze andere content."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:633
+#: src/lib/dcp_content.cc:635
 msgid ""
 "its reel lengths differ from those in the film; set the reel mode to 'split "
 "by video content'."
@@ -2027,12 +2034,12 @@ msgstr ""
 "'splits per video-content'."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:672
+#: src/lib/dcp_content.cc:674
 msgid "its video frame size differs from the film's."
 msgstr "zijn video-beeldgrootte verschilt van die in de film."
 
 #. / TRANSLATORS: m here is an abbreviation for minutes
-#: src/lib/util.cc:209
+#: src/lib/util.cc:212
 msgid "m"
 msgstr "m"
 
@@ -2040,12 +2047,12 @@ msgstr "m"
 msgid "moving"
 msgstr "verplaatsen"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "name"
 msgstr "naam"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:756
+#: src/lib/dcp_content.cc:758
 msgid ""
 "one of its closed caption has a non-zero entry point so it must be re-"
 "written."
@@ -2054,7 +2061,7 @@ msgstr ""
 "moet opnieuw geschreven worden."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:743
+#: src/lib/dcp_content.cc:745
 msgid ""
 "one of its subtitle reels has a non-zero entry point so it must be re-"
 "written."
@@ -2063,7 +2070,7 @@ msgstr ""
 "moet opnieuw geschreven worden."
 
 #. / TRANSLATORS: s here is an abbreviation for seconds
-#: src/lib/util.cc:219
+#: src/lib/util.cc:222
 msgid "s"
 msgstr "s"
 
@@ -2071,7 +2078,7 @@ msgstr "s"
 msgid "sRGB"
 msgstr "sRGB"
 
-#: src/lib/film.cc:402
+#: src/lib/film.cc:413
 msgid "some of your content is missing"
 msgstr "een deel van uw content ontbreekt"
 
@@ -2083,7 +2090,7 @@ msgstr "stilstaand beeld"
 msgid "unknown"
 msgstr "onbekend"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "video frames"
 msgstr "video frames"
 
diff --git a/src/lib/po/pl_PL.po b/src/lib/po/pl_PL.po
index 0e515a01a..c86dde863 100644
--- a/src/lib/po/pl_PL.po
+++ b/src/lib/po/pl_PL.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-08-20 23:10+0200\n"
+"POT-Creation-Date: 2021-10-17 15:26+0200\n"
 "PO-Revision-Date: 2017-07-31 21:23+0200\n"
 "Last-Translator: \n"
 "Language-Team: \n"
@@ -19,7 +19,7 @@ msgstr ""
 "Plural-Forms: nplurals=3; plural=(n==1 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 "
 "|| n%100>=20) ? 1 : 2);\n"
 
-#: src/lib/video_content.cc:486
+#: src/lib/video_content.cc:496
 #, c-format
 msgid ""
 "\n"
@@ -28,7 +28,7 @@ msgstr ""
 "\n"
 "Liczba kl/s pliku video %.4f\n"
 
-#: src/lib/video_content.cc:451
+#: src/lib/video_content.cc:461
 msgid ""
 "\n"
 "Cropped to %1x%2"
@@ -36,7 +36,7 @@ msgstr ""
 "\n"
 "Wykadrowany do %1x%2"
 
-#: src/lib/video_content.cc:444
+#: src/lib/video_content.cc:452
 #, c-format
 msgid ""
 "\n"
@@ -45,7 +45,7 @@ msgstr ""
 "\n"
 "Proporcje obrazu %.2f:1"
 
-#: src/lib/video_content.cc:474
+#: src/lib/video_content.cc:484
 msgid ""
 "\n"
 "Padded with black to fit container %1 (%2x%3)"
@@ -53,7 +53,7 @@ msgstr ""
 "\n"
 "Dodane czarne pasy, aby dopasować do formatu %1 (%2x%3)"
 
-#: src/lib/video_content.cc:464
+#: src/lib/video_content.cc:474
 msgid ""
 "\n"
 "Scaled to %1x%2"
@@ -61,7 +61,7 @@ msgstr ""
 "\n"
 "Przeskalowany do %1x%2"
 
-#: src/lib/video_content.cc:468 src/lib/video_content.cc:479
+#: src/lib/video_content.cc:478 src/lib/video_content.cc:489
 #, c-format
 msgid " (%.2f:1)"
 msgstr " (%.2f:1)"
@@ -106,7 +106,7 @@ msgstr ""
 msgid "%1 [Atmos]"
 msgstr "%1 [Atmos]"
 
-#: src/lib/dcp_content.cc:318
+#: src/lib/dcp_content.cc:320
 msgid "%1 [DCP]"
 msgstr "%1 [DCP]"
 
@@ -122,7 +122,7 @@ msgstr "%1 [film]"
 msgid "%1 [video]"
 msgstr "%1 [obraz]"
 
-#: src/lib/video_content.cc:439
+#: src/lib/video_content.cc:447
 #, c-format
 msgid ", pixel aspect ratio %.2f:1"
 msgstr ", proporcje piksela %.2f:1"
@@ -171,7 +171,7 @@ msgstr "2.39 (Scope)"
 msgid "3D denoiser"
 msgstr "Odszumianie 3D"
 
-#: src/lib/hints.cc:212
+#: src/lib/hints.cc:209
 msgid ""
 "4K 3D is only supported by a very limited number of projectors.  Unless you "
 "know that you will play this DCP back on a capable projector, it is "
@@ -203,7 +203,7 @@ msgid ""
 "Paypal to donate €10</a></ul><p>Thank you!"
 msgstr ""
 
-#: src/lib/hints.cc:169
+#: src/lib/hints.cc:166
 msgid ""
 "A few projectors have problems playing back very high bit-rate DCPs.  It is "
 "a good idea to drop the JPEG2000 bandwidth down to about 200Mbit/s; this is "
@@ -213,6 +213,13 @@ msgstr ""
 "przepływie bitów. Dobra rada to zmniejszenie przepływu bitów do ok 200Mbit/s "
 "zwłaszcza, że raczej nie wpłynie to na jakość obrazu."
 
+#: src/lib/text_content.cc:248
+msgid ""
+"A subtitle or closed caption file in this project is marked with the "
+"language '%1', which DCP-o-matic does not recognise.  The file's language "
+"has been cleared."
+msgstr ""
+
 #: src/lib/ffmpeg_content.cc:635
 msgid "ARIB STD-B67 ('Hybrid log-gamma')"
 msgstr "ARIB STD-B67 ('Hybrydowa log-gamma')"
@@ -221,7 +228,7 @@ msgstr "ARIB STD-B67 ('Hybrydowa log-gamma')"
 msgid "Advertisement"
 msgstr "Reklama"
 
-#: src/lib/hints.cc:146
+#: src/lib/hints.cc:143
 msgid ""
 "All of your content is in Scope (2.39:1) but your DCP's container is Flat "
 "(1.85:1).  This will letter-box your content inside a Flat (1.85:1) frame.  "
@@ -233,7 +240,7 @@ msgstr ""
 "skompensować różnice formatów. Być może lepiej ustawić kontener DCP na Scope "
 "(2.39:1) w zakładce \"DCP\"."
 
-#: src/lib/hints.cc:150
+#: src/lib/hints.cc:147
 #, fuzzy
 msgid ""
 "All of your content narrower than 1.90:1 but your DCP's container is Scope "
@@ -259,54 +266,54 @@ msgstr "Analizuj dźwięk"
 msgid "Analysing subtitles"
 msgstr "Szukanie napisów"
 
-#: src/lib/hints.cc:368
+#: src/lib/hints.cc:365
 msgid ""
 "At least one marker comes after the end of the project and will be ignored."
 msgstr ""
 
-#: src/lib/hints.cc:473
+#: src/lib/hints.cc:470
 msgid "At least one of your closed caption files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:466
+#: src/lib/hints.cc:463
 msgid "At least one of your closed caption files' XML part is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:481
+#: src/lib/hints.cc:478
 msgid "At least one of your subtitle files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:445
+#: src/lib/hints.cc:442
 msgid ""
 "At least one of your subtitle lines has more than 52 characters.  It is "
 "recommended to make each line 52 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:447
+#: src/lib/hints.cc:444
 msgid ""
 "At least one of your subtitle lines has more than 79 characters.  You should "
 "make each line 79 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:590
+#: src/lib/hints.cc:587
 msgid ""
 "At least one of your subtitles has more than 3 lines.  It is advisable to "
 "use no more than 3 lines."
 msgstr ""
 
-#: src/lib/hints.cc:580
+#: src/lib/hints.cc:577
 msgid ""
 "At least one of your subtitles lasts less than 15 frames.  It is advisable "
 "to make each subtitle at least 15 frames long."
 msgstr ""
 
-#: src/lib/hints.cc:585
+#: src/lib/hints.cc:582
 msgid ""
 "At least one of your subtitles starts less than 2 frames after the previous "
 "one.  It is advisable to make the gap between subtitles at least 2 frames."
 msgstr ""
 
-#: src/lib/hints.cc:633
+#: src/lib/hints.cc:630
 msgid ""
 "At least one piece of subtitle or closed caption content has no specified "
 "language.  It is advisable to set the language for each piece of subtitle or "
@@ -380,15 +387,15 @@ msgstr "Bitów na piksel"
 msgid "Bob Weaver Deinterlacing Filter"
 msgstr "I jeszcze jeden filtr usuwania przeplotu"
 
-#: src/lib/util.cc:598
+#: src/lib/util.cc:601
 msgid "BsL"
 msgstr "BsL"
 
-#: src/lib/util.cc:599
+#: src/lib/util.cc:602
 msgid "BsR"
 msgstr "BsR"
 
-#: src/lib/util.cc:590
+#: src/lib/util.cc:593
 msgid "C"
 msgstr "C"
 
@@ -396,7 +403,7 @@ msgstr "C"
 msgid "Cancelled"
 msgstr "Anulowane"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 #, fuzzy
 msgid "Cannot contain slashes"
 msgstr "nie może zawierać ukośników"
@@ -405,11 +412,11 @@ msgstr "nie może zawierać ukośników"
 msgid "Cannot handle pixel format %1 during %2"
 msgstr "Nie można przetworzyć formatu %1 podczas %2"
 
-#: src/lib/film.cc:1662
+#: src/lib/film.cc:1711
 msgid "Cannot make a KDM as this project is not encrypted."
 msgstr ""
 
-#: src/lib/util.cc:559
+#: src/lib/util.cc:562
 msgid "Centre"
 msgstr "Centralny"
 
@@ -480,7 +487,7 @@ msgstr ""
 msgid "Computing digest"
 msgstr "Obliczanie danych"
 
-#: src/lib/writer.cc:535
+#: src/lib/writer.cc:531
 msgid "Computing digests"
 msgstr "Obliczanie danych"
 
@@ -509,23 +516,23 @@ msgstr "Łączone pliki muszą jednocześnie posiadać lub nie posiadać napisó
 msgid "Content to be joined must all have or not have video"
 msgstr "Łączone pliki muszą jednocześnie posiadać lub nie posiadać obrazu"
 
-#: src/lib/text_content.cc:305
+#: src/lib/text_content.cc:320
 #, fuzzy
 msgid ""
 "Content to be joined must both be main subtitle languages or both additional."
 msgstr "Łączone pliki muszą mieć takie odstępy między liniami napisów."
 
-#: src/lib/video_content.cc:207
+#: src/lib/video_content.cc:210
 #, fuzzy
 msgid "Content to be joined must have all its video used or not used."
 msgstr "Łączone pliki muszą mieć taką samą liczbę kl/s"
 
-#: src/lib/text_content.cc:260
+#: src/lib/text_content.cc:275
 msgid "Content to be joined must have the same 'burn subtitles' setting."
 msgstr ""
 "Łączone pliki muszą mieć takie same ustawienia w sekcji \"wypal napisy\"."
 
-#: src/lib/text_content.cc:256
+#: src/lib/text_content.cc:271
 msgid "Content to be joined must have the same 'use subtitles' setting."
 msgstr ""
 "Łączone pliki muszą mieć takie same ustawienia w sekcji \"użyj napisów\"."
@@ -538,63 +545,63 @@ msgstr "Łączone pliki muszą mieć takie samo opóźnienie dźwięku."
 msgid "Content to be joined must have the same audio gain."
 msgstr "Łączone pliki muszą mieć takie samo wzmocnienie dźwięku."
 
-#: src/lib/video_content.cc:239
+#: src/lib/video_content.cc:242
 #, fuzzy
 msgid "Content to be joined must have the same burnt subtitle language."
 msgstr ""
 "Łączone pliki muszą mieć takie same ustawienia w sekcji \"wypal napisy\"."
 
-#: src/lib/video_content.cc:231
+#: src/lib/video_content.cc:234
 msgid "Content to be joined must have the same colour conversion."
 msgstr "Łączone pliki muszą mieć takią samą konwersję kolorów."
 
-#: src/lib/video_content.cc:219
+#: src/lib/video_content.cc:222
 msgid "Content to be joined must have the same crop."
 msgstr "Łączone pliki muszą mieć takie samo kadrowanie."
 
-#: src/lib/video_content.cc:223
+#: src/lib/video_content.cc:226
 #, fuzzy
 msgid "Content to be joined must have the same custom ratio setting."
 msgstr "Łączone pliki muszą mieć takie same ustawienia skalowania."
 
-#: src/lib/video_content.cc:227
+#: src/lib/video_content.cc:230
 #, fuzzy
 msgid "Content to be joined must have the same custom size setting."
 msgstr "Łączone pliki muszą mieć takie same ustawienia skalowania."
 
-#: src/lib/video_content.cc:235
+#: src/lib/video_content.cc:238
 msgid "Content to be joined must have the same fades."
 msgstr "Łączone pliki muszą mieć takie same czasy wejścia/wyjścia."
 
-#: src/lib/text_content.cc:288
+#: src/lib/text_content.cc:303
 msgid "Content to be joined must have the same outline width."
 msgstr "Łączone pliki muszą mieć taki sam rozmiar obrysu zewnętrznego."
 
-#: src/lib/video_content.cc:211
+#: src/lib/video_content.cc:214
 msgid "Content to be joined must have the same picture size."
 msgstr "Łączone pliki muszą mieć taki sam rozmiar obrazu."
 
-#: src/lib/text_content.cc:264
+#: src/lib/text_content.cc:279
 msgid "Content to be joined must have the same subtitle X offset."
 msgstr "Łączone pliki muszą mieć takie samo przesunięcie X napisów."
 
-#: src/lib/text_content.cc:272
+#: src/lib/text_content.cc:287
 msgid "Content to be joined must have the same subtitle X scale."
 msgstr "Łączone pliki muszą mieć taki sam rozmiar X napisów."
 
-#: src/lib/text_content.cc:268
+#: src/lib/text_content.cc:283
 msgid "Content to be joined must have the same subtitle Y offset."
 msgstr "Łączone pliki muszą mieć takie samo przesunięcie Y napisów."
 
-#: src/lib/text_content.cc:276
+#: src/lib/text_content.cc:291
 msgid "Content to be joined must have the same subtitle Y scale."
 msgstr "Łączone pliki muszą mieć taki sam rozmiar Y napisów."
 
-#: src/lib/text_content.cc:284
+#: src/lib/text_content.cc:299
 msgid "Content to be joined must have the same subtitle fades."
 msgstr "Łączone pliki muszą mieć taki same czasy wejścia/wyjścia."
 
-#: src/lib/text_content.cc:280
+#: src/lib/text_content.cc:295
 msgid "Content to be joined must have the same subtitle line spacing."
 msgstr "Łączone pliki muszą mieć takie odstępy między liniami napisów."
 
@@ -602,16 +609,16 @@ msgstr "Łączone pliki muszą mieć takie odstępy między liniami napisów."
 msgid "Content to be joined must have the same video frame rate"
 msgstr "Łączone pliki muszą mieć taką samą liczbę kl/s"
 
-#: src/lib/video_content.cc:215
+#: src/lib/video_content.cc:218
 msgid "Content to be joined must have the same video frame type."
 msgstr "Łączone pliki muszą mieć taki sam klatkaż."
 
-#: src/lib/text_content.cc:297
+#: src/lib/text_content.cc:312
 #, fuzzy
 msgid "Content to be joined must use the same DCP track."
 msgstr "Łączone pliki muszą mieć takie same czcionki."
 
-#: src/lib/text_content.cc:293 src/lib/text_content.cc:313
+#: src/lib/text_content.cc:308 src/lib/text_content.cc:328
 msgid "Content to be joined must use the same fonts."
 msgstr "Łączone pliki muszą mieć takie same czcionki."
 
@@ -619,12 +626,12 @@ msgstr "Łączone pliki muszą mieć takie same czcionki."
 msgid "Content to be joined must use the same subtitle stream."
 msgstr "Łączone pliki muszą używać tego samego strumienia napisów."
 
-#: src/lib/text_content.cc:301
+#: src/lib/text_content.cc:316
 #, fuzzy
 msgid "Content to be joined must use the same text language."
 msgstr "Łączone pliki muszą mieć takie same czcionki."
 
-#: src/lib/video_content.cc:430
+#: src/lib/video_content.cc:438
 msgid "Content video is %1x%2"
 msgstr "Rozdzielczość pliku video %1x%2"
 
@@ -649,7 +656,7 @@ msgstr "Nie można połączyć z serwerem %1 (%2)"
 msgid "Could not create remote directory %1 (%2)"
 msgstr "Nie można utworzyć folderu zdalnego %1 (%2)"
 
-#: src/lib/image_examiner.cc:65
+#: src/lib/image_examiner.cc:64
 msgid "Could not decode JPEG2000 file %1 (%2)"
 msgstr "Nie można zdekodować pliku JPEG2000 %1 (%2)"
 
@@ -688,7 +695,7 @@ msgstr "Nie udało się otworzyć pobranego archiwum ZIP"
 msgid "Could not open file for writing"
 msgstr "nie udało się otworzyć pliku %1 do zapisu (%2)"
 
-#: src/lib/ffmpeg_file_encoder.cc:269
+#: src/lib/ffmpeg_file_encoder.cc:265
 #, fuzzy
 msgid "Could not open output file %1 (%2)"
 msgstr "nie udało się zapisać do pliku %1 (%2)"
@@ -705,19 +712,19 @@ msgstr "Nie udało się rozpocząć transferu"
 msgid "Could not write to remote file (%1)"
 msgstr "Nie udało się zapisać do pliku zdalnego (%1)"
 
-#: src/lib/util.cc:569
+#: src/lib/util.cc:572
 msgid "D-BOX primary"
 msgstr "D-BOX główny"
 
-#: src/lib/util.cc:570
+#: src/lib/util.cc:573
 msgid "D-BOX secondary"
 msgstr "D-BOX kolejny"
 
-#: src/lib/util.cc:600
+#: src/lib/util.cc:603
 msgid "DBP"
 msgstr "DBP"
 
-#: src/lib/util.cc:601
+#: src/lib/util.cc:604
 msgid "DBS"
 msgstr "DBS"
 
@@ -729,7 +736,7 @@ msgstr "1.85 (Flat)"
 msgid "DCI Scope"
 msgstr "2.35 (Scope)"
 
-#: src/lib/dcp_subtitle_content.cc:103
+#: src/lib/dcp_subtitle_content.cc:104
 msgid "DCP XML subtitles"
 msgstr "Napisy DCP XML"
 
@@ -755,13 +762,13 @@ msgstr ""
 "DCP-o-matic nie mógł otworzyć pliku %1. Plik nie istnieje, lub jest w  "
 "niewspieranym formacie."
 
-#: src/lib/film.cc:1565
+#: src/lib/film.cc:1614
 msgid ""
 "DCP-o-matic had to change your settings for referring to DCPs as OV.  Please "
 "review those settings to make sure they are what you want."
 msgstr ""
 
-#: src/lib/film.cc:1533
+#: src/lib/film.cc:1582
 msgid ""
 "DCP-o-matic had to change your settings so that the film's frame rate is the "
 "same as that of your Atmos content."
@@ -772,7 +779,7 @@ msgid ""
 "DCP-o-matic no longer supports the `%1' filter, so it has been turned off."
 msgstr "DCP-o-matic nie wspiera już filtru `%1', więc został on wyłączony."
 
-#: src/lib/config.cc:359 src/lib/config.cc:1114
+#: src/lib/config.cc:357 src/lib/config.cc:1114
 msgid "DCP-o-matic notification"
 msgstr ""
 
@@ -866,7 +873,7 @@ msgstr "Błąd w pliku napisów: jest %1, powinno być %2"
 msgid "Error: %1"
 msgstr "Błąd %1"
 
-#: src/lib/hints.cc:408
+#: src/lib/hints.cc:405
 msgid "Examining audio, subtitles and closed captions"
 msgstr ""
 
@@ -880,7 +887,7 @@ msgstr "Sprawdzanie materiału"
 msgid "Examining subtitles"
 msgstr "Szukanie napisów"
 
-#: src/lib/hints.cc:406
+#: src/lib/hints.cc:403
 #, fuzzy
 msgid "Examining subtitles and closed captions"
 msgstr "Szukanie napisów"
@@ -912,7 +919,7 @@ msgstr "Nie udało się wysłać wiadomości (%1)"
 msgid "Feature"
 msgstr "Pełnometrażowy"
 
-#: src/lib/content.cc:464
+#: src/lib/content.cc:468
 msgid "Filename"
 msgstr "Nazwa pliku"
 
@@ -924,11 +931,11 @@ msgstr "Film"
 msgid "Finding length"
 msgstr "Obliczanie czasu trwania"
 
-#: src/lib/content.cc:471
+#: src/lib/content.cc:475
 msgid "Frame rate"
 msgstr "Liczba kl/s"
 
-#: src/lib/util.cc:943
+#: src/lib/util.cc:946
 msgid "Friday"
 msgstr "Piątek"
 
@@ -972,11 +979,11 @@ msgstr "Gamma 28 (BT470BG)"
 msgid "Gradient debander"
 msgstr "Zachowaj przejścia tonalne"
 
-#: src/lib/util.cc:594
+#: src/lib/util.cc:597
 msgid "HI"
 msgstr "HI"
 
-#: src/lib/util.cc:563
+#: src/lib/util.cc:566
 msgid "Hearing impaired"
 msgstr "Dla niesłyszących"
 
@@ -1000,18 +1007,18 @@ msgstr "IEC61966-2-1 (sRGB lub sYCC)"
 msgid "IEC61966-2-4"
 msgstr "IEC61966-2-4"
 
-#: src/lib/hints.cc:188
+#: src/lib/hints.cc:185
 msgid "If you do use 25fps you should change your DCP standard to SMPTE."
 msgstr ""
 
-#: src/lib/hints.cc:251
+#: src/lib/hints.cc:248
 msgid ""
 "In general it is now advisable to make SMPTE DCPs unless you have a "
 "particular reason to use Interop.  You are advised to set your DCP to use "
 "the SMPTE standard in the \"DCP\" tab."
 msgstr ""
 
-#: src/lib/hints.cc:573
+#: src/lib/hints.cc:570
 msgid ""
 "It is advisable to put your first subtitle at least 4 seconds after the "
 "start of the DCP to make sure it is seen."
@@ -1025,7 +1032,7 @@ msgstr "Wystąpił nieznany błąd."
 msgid "JEDEC P22"
 msgstr ""
 
-#: src/lib/config.cc:349 src/lib/config.cc:1099
+#: src/lib/config.cc:347 src/lib/config.cc:1099
 msgid "KDM delivery: $CPL_NAME"
 msgstr "Wysyłanie klucza: $CPL_NAME"
 
@@ -1033,39 +1040,39 @@ msgstr "Wysyłanie klucza: $CPL_NAME"
 msgid "Kernel deinterlacer"
 msgstr "Usuwanie przeplotu metodą Kernel"
 
-#: src/lib/ffmpeg_encoder.cc:251 src/lib/util.cc:588
+#: src/lib/ffmpeg_encoder.cc:253 src/lib/util.cc:591
 msgid "L"
 msgstr "L"
 
-#: src/lib/util.cc:596
+#: src/lib/util.cc:599
 msgid "Lc"
 msgstr "Lc"
 
-#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:557
+#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:560
 msgid "Left"
 msgstr "Lewy"
 
-#: src/lib/util.cc:565
+#: src/lib/util.cc:568
 msgid "Left centre"
 msgstr "Lewy centralny"
 
-#: src/lib/util.cc:567
+#: src/lib/util.cc:570
 msgid "Left rear surround"
 msgstr "Lewy tylny surround"
 
-#: src/lib/util.cc:561
+#: src/lib/util.cc:564
 msgid "Left surround"
 msgstr "Lewy surround"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "Length"
 msgstr "Długość"
 
-#: src/lib/util.cc:591
+#: src/lib/util.cc:594
 msgid "Lfe"
 msgstr "Lfe"
 
-#: src/lib/util.cc:560
+#: src/lib/util.cc:563
 msgid "Lfe (sub)"
 msgstr "Lfe (subwoofer)"
 
@@ -1089,11 +1096,11 @@ msgstr "Logarytmiczny (100:1 range)"
 msgid "Logarithmic (316:1 range)"
 msgstr "Logarytmiczny (316:1 range)"
 
-#: src/lib/exceptions.cc:145
+#: src/lib/exceptions.cc:152
 msgid "Lost communication between main and writer processes"
 msgstr ""
 
-#: src/lib/util.cc:592
+#: src/lib/util.cc:595
 msgid "Ls"
 msgstr "Ls"
 
@@ -1105,19 +1112,19 @@ msgstr "Dekoder Mid-side"
 msgid "Misc"
 msgstr "Różne"
 
-#: src/lib/dcp_examiner.cc:164
+#: src/lib/dcp_examiner.cc:175
 msgid "Mismatched audio channel counts in DCP"
 msgstr "Nieprawidłowa ilość kanałów dźwiękowych w DCP"
 
-#: src/lib/dcp_examiner.cc:170
+#: src/lib/dcp_examiner.cc:181
 msgid "Mismatched audio sample rates in DCP"
 msgstr "Nieprawidłowe próbkowanie ścieżek dźwiękowych w DCP"
 
-#: src/lib/dcp_examiner.cc:137
+#: src/lib/dcp_examiner.cc:145
 msgid "Mismatched frame rates in DCP"
 msgstr "Nieprawidłowe liczby kl/s w DCP"
 
-#: src/lib/dcp_examiner.cc:145
+#: src/lib/dcp_examiner.cc:153
 msgid "Mismatched video sizes in DCP"
 msgstr "Nieprawidłowe rozmiary plików obrazu w DCP"
 
@@ -1126,11 +1133,11 @@ msgstr "Nieprawidłowe rozmiary plików obrazu w DCP"
 msgid "Missing required setting %1"
 msgstr "brakuje wymaganych ustawień %1"
 
-#: src/lib/util.cc:935
+#: src/lib/util.cc:938
 msgid "Monday"
 msgstr "Poniedziałek"
 
-#: src/lib/writer.cc:763
+#: src/lib/writer.cc:759
 msgid "Mono"
 msgstr "Mono"
 
@@ -1154,7 +1161,7 @@ msgstr "W folderze nie znaleziono obsługiwanych plików."
 msgid "Noise reduction"
 msgstr "Redukcja szumu"
 
-#: src/lib/writer.cc:731 src/lib/writer.cc:738 src/lib/writer.cc:761
+#: src/lib/writer.cc:727 src/lib/writer.cc:734 src/lib/writer.cc:757
 msgid "None"
 msgstr "Brak"
 
@@ -1192,7 +1199,7 @@ msgstr "Odszumianie DWT"
 msgid "P3"
 msgstr "P3"
 
-#: src/lib/util.h:59
+#: src/lib/util.h:64
 msgid ""
 "Please report this problem by using Help -> Report a problem or via email to "
 "carl@dcpomatic.com"
@@ -1202,7 +1209,7 @@ msgstr ""
 msgid "Policy"
 msgstr "Umowa"
 
-#: src/lib/content.cc:480
+#: src/lib/content.cc:484
 msgid "Prepared for video frame rate"
 msgstr "Przygotowany na liczbę kl/s"
 
@@ -1218,7 +1225,7 @@ msgstr ""
 msgid "Public Service Announcement"
 msgstr "Komunikat publiczny"
 
-#: src/lib/ffmpeg_encoder.cc:256 src/lib/util.cc:589
+#: src/lib/ffmpeg_encoder.cc:258 src/lib/util.cc:592
 msgid "R"
 msgstr "R"
 
@@ -1230,7 +1237,7 @@ msgstr "RGB / sRGB (IEC61966-2-1)"
 msgid "Rating"
 msgstr "Klasyfikacja"
 
-#: src/lib/util.cc:597
+#: src/lib/util.cc:600
 msgid "Rc"
 msgstr "Rc"
 
@@ -1250,19 +1257,19 @@ msgstr "Rec. 601"
 msgid "Rec. 709"
 msgstr "Rec. 709"
 
-#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:558
+#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:561
 msgid "Right"
 msgstr "Prawy"
 
-#: src/lib/util.cc:566
+#: src/lib/util.cc:569
 msgid "Right centre"
 msgstr "Prawy centralny"
 
-#: src/lib/util.cc:568
+#: src/lib/util.cc:571
 msgid "Right rear surround"
 msgstr "Prawy tylny surround"
 
-#: src/lib/util.cc:562
+#: src/lib/util.cc:565
 msgid "Right surround"
 msgstr "Prawy surround"
 
@@ -1274,7 +1281,7 @@ msgstr ""
 msgid "Rotate 90 degrees clockwise"
 msgstr ""
 
-#: src/lib/util.cc:593
+#: src/lib/util.cc:596
 msgid "Rs"
 msgstr "Rs"
 
@@ -1299,7 +1306,7 @@ msgstr "SMPTE 2085, Y'D'zD'x"
 msgid "SMPTE 240M"
 msgstr "SMPTE 240M"
 
-#: src/lib/hints.cc:615
+#: src/lib/hints.cc:612
 msgid ""
 "SMPTE DCPs with the type FTR (feature) should have markers for the first "
 "frame of end credits (FFEC) and the first frame of moving credits (FFMC).  "
@@ -1337,7 +1344,7 @@ msgstr "Błąd SSH (%1)"
 msgid "SSH error [%1] (%2)"
 msgstr "Błąd SSH (%1)"
 
-#: src/lib/util.cc:945
+#: src/lib/util.cc:948
 msgid "Saturday"
 msgstr "Sobota"
 
@@ -1354,11 +1361,11 @@ msgstr "Wysyłam wiadomość"
 msgid "Short"
 msgstr "Krótkometrażowy"
 
-#: src/lib/util.cc:602
+#: src/lib/util.cc:605
 msgid "Sign"
 msgstr ""
 
-#: src/lib/video_content.cc:500
+#: src/lib/video_content.cc:510
 msgid "Size"
 msgstr "Rozmiar"
 
@@ -1379,30 +1386,30 @@ msgid ""
 "project in DCP-o-matic, check the settings, then save it before trying again."
 msgstr ""
 
-#: src/lib/hints.cc:554
+#: src/lib/hints.cc:551
 msgid ""
 "Some of your closed captions span more than %1 lines, so they will be "
 "truncated."
 msgstr ""
 
-#: src/lib/hints.cc:653
+#: src/lib/hints.cc:650
 msgid ""
 "Some of your content has audio but you have not set the audio language.  It "
 "is advisable to set the audio language in the \"DCP\" tab unless your audio "
 "has no spoken parts."
 msgstr ""
 
-#: src/lib/film.cc:406
+#: src/lib/film.cc:417
 #, fuzzy
 msgid "Some of your content needs a KDM"
 msgstr "część Twoich materiałów wymaga klucza KDM"
 
-#: src/lib/film.cc:409
+#: src/lib/film.cc:420
 #, fuzzy
 msgid "Some of your content needs an OV"
 msgstr "część Twoich materiałów wymaga wersji OV paczki DCP"
 
-#: src/lib/writer.cc:765
+#: src/lib/writer.cc:761
 msgid "Stereo"
 msgstr "Stereo"
 
@@ -1414,7 +1421,7 @@ msgstr "Miksuj 2.0 do 5.1 wersja A"
 msgid "Stereo to 5.1 up-mixer B"
 msgstr "Miksuj 2.0 do 5.1 wersja B"
 
-#: src/lib/util.cc:933
+#: src/lib/util.cc:936
 msgid "Sunday"
 msgstr "Niedziela"
 
@@ -1434,7 +1441,7 @@ msgstr "Testowy"
 msgid "Text subtitles"
 msgstr "Napisy"
 
-#: src/lib/film.cc:389
+#: src/lib/film.cc:400
 msgid "The DCP is empty, perhaps because all the content has zero length."
 msgstr ""
 
@@ -1446,7 +1453,7 @@ msgstr "Certyfikat jest nieprawidłowy"
 msgid "The certificate chain for signing is invalid (%1)"
 msgstr "Certyfikat jest nieprawidłowy (%1)"
 
-#: src/lib/video_decoder.cc:86
+#: src/lib/video_decoder.cc:81
 msgid ""
 "The content file %1 is set as 3D but does not appear to contain 3D images.  "
 "Please set it to 2D.  You can still make a 3D DCP from this content by "
@@ -1477,7 +1484,7 @@ msgstr ""
 msgid "The file %1 has been trimmed by %2 milliseconds more."
 msgstr ""
 
-#: src/lib/hints.cc:241
+#: src/lib/hints.cc:238
 msgid ""
 "There is a large difference between the frame rate of your DCP and that of "
 "some of your content.  This will cause your audio to play back at a much "
@@ -1486,7 +1493,7 @@ msgid ""
 "systems support your chosen DCP rate."
 msgstr ""
 
-#: src/lib/dcp_content.cc:657
+#: src/lib/dcp_content.cc:659
 msgid "There is no video in this DCP"
 msgstr ""
 
@@ -1499,11 +1506,11 @@ msgstr ""
 "Brakuje pamięci, aby wykonać tą operację. Jeśli twój system jest 32 bitowy "
 "spróbuj zmniejszyć liczbę wątków kodujących w Prefeerencjach."
 
-#: src/lib/util.cc:1146
+#: src/lib/util.cc:1150
 msgid "This KDM was made for DCP-o-matic but not for its leaf certificate."
 msgstr ""
 
-#: src/lib/util.cc:1144
+#: src/lib/util.cc:1148
 msgid "This KDM was not made for DCP-o-matic's decryption certificate."
 msgstr ""
 
@@ -1530,7 +1537,7 @@ msgstr ""
 "To jest klucz KDM. KDMy powinny być dodane do szyfrowanej paczki DCP przez "
 "prawy klik i wybranie \"Dodaj KDM\"."
 
-#: src/lib/film.cc:581
+#: src/lib/film.cc:595
 msgid ""
 "This film was created with a newer version of DCP-o-matic, and it cannot be "
 "loaded into this version.  Sorry!"
@@ -1538,7 +1545,7 @@ msgstr ""
 "Projekt został utworzony przy pomocy nowszej wersji DCP-o-matic i nie może "
 "być otwarty w tej wersji. Przepraszamy!"
 
-#: src/lib/film.cc:566
+#: src/lib/film.cc:580
 msgid ""
 "This film was created with an older version of DCP-o-matic, and "
 "unfortunately it cannot be loaded into this version.  You will need to "
@@ -1548,7 +1555,7 @@ msgstr ""
 "być otwarty w tej wersji. Musisz stworzyć nowy Projekt i ponownie dodać "
 "materiały i ustawienia. Przepraszamy!"
 
-#: src/lib/util.cc:941
+#: src/lib/util.cc:944
 msgid "Thursday"
 msgstr "Czwartek"
 
@@ -1569,7 +1576,7 @@ msgstr "Transkodowanie %1"
 msgid "Transitional"
 msgstr "Tymczasowy"
 
-#: src/lib/util.cc:937
+#: src/lib/util.cc:940
 msgid "Tuesday"
 msgstr "Wtorek"
 
@@ -1594,7 +1601,7 @@ msgstr "nieznany"
 msgid "Unknown error"
 msgstr "Nieznany błąd"
 
-#: src/lib/ffmpeg_decoder.cc:343
+#: src/lib/ffmpeg_decoder.cc:339
 msgid "Unrecognised audio sample format (%1)"
 msgstr "Nieznany rodzaj pliku dźwiękowego (%1)"
 
@@ -1614,7 +1621,7 @@ msgstr "Nieokreślony"
 msgid "Untitled"
 msgstr "Nowy"
 
-#: src/lib/util.cc:571 src/lib/util.cc:572
+#: src/lib/util.cc:574 src/lib/util.cc:575
 msgid "Unused"
 msgstr "Nieużywany"
 
@@ -1626,7 +1633,7 @@ msgstr "Upmix L"
 msgid "Upmix R"
 msgstr "Upmix R"
 
-#: src/lib/util.cc:595
+#: src/lib/util.cc:598
 msgid "VI"
 msgstr "VI"
 
@@ -1638,7 +1645,7 @@ msgstr ""
 msgid "Vertical flip"
 msgstr ""
 
-#: src/lib/util.cc:564
+#: src/lib/util.cc:567
 msgid "Visually impaired"
 msgstr "Dla niedowidzących"
 
@@ -1651,7 +1658,7 @@ msgstr "Czekam"
 msgid "Weave filter"
 msgstr "Filtr Telecine"
 
-#: src/lib/util.cc:939
+#: src/lib/util.cc:942
 msgid "Wednesday"
 msgstr "Środa"
 
@@ -1663,7 +1670,7 @@ msgstr "YCOCG"
 msgid "Yet Another Deinterlacing Filter"
 msgstr "I jeszcze jeden filtr usuwania przeplotu"
 
-#: src/lib/hints.cc:201
+#: src/lib/hints.cc:198
 #, fuzzy
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
@@ -1674,7 +1681,7 @@ msgstr ""
 "oficjalnie obsługiwana. Zaleca się zmianę liczby kl/s lub przestawienie "
 "trybu na SMPTE."
 
-#: src/lib/hints.cc:185
+#: src/lib/hints.cc:182
 #, fuzzy
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
@@ -1685,7 +1692,7 @@ msgstr ""
 "oficjalnie obsługiwana. Zaleca się zmianę liczby kl/s lub przestawienie "
 "trybu na SMPTE."
 
-#: src/lib/hints.cc:195
+#: src/lib/hints.cc:192
 #, fuzzy
 msgid ""
 "You are set up for a DCP frame rate of 30fps, which is not supported by all "
@@ -1695,7 +1702,7 @@ msgstr ""
 "oficjalnie obsługiwana. Zaleca się zmianę liczby kl/s lub przestawienie "
 "trybu na SMPTE."
 
-#: src/lib/hints.cc:306
+#: src/lib/hints.cc:303
 msgid ""
 "You are using 3D content but your DCP is set to 2D.  Set the DCP to 3D if "
 "you want to play it back on a 3D system (e.g. Real-D, MasterImage etc.)"
@@ -1704,14 +1711,14 @@ msgstr ""
 "opcje DCP na 3D, jeśli chcesz odtwarzać go na systemach 3D (jak Real-D, "
 "MasterImage itd.)"
 
-#: src/lib/hints.cc:122
+#: src/lib/hints.cc:119
 msgid ""
 "You are using DCP-o-matic's stereo-to-5.1 upmixer.  This is experimental and "
 "may result in poor-quality audio.  If you continue, you should listen to the "
 "resulting DCP in a cinema to make sure that it sounds good."
 msgstr ""
 
-#: src/lib/hints.cc:290
+#: src/lib/hints.cc:287
 msgid ""
 "You have %1 files that look like they are VOB files from DVD. You should "
 "join them to ensure smooth joins between the files."
@@ -1719,19 +1726,19 @@ msgstr ""
 "Używasz %1 plików, które zdają się być plikami .vob z DVD. Powinieneś je "
 "połączyć w jeden plik, by mieć pewność płynnych przejść w obrazie."
 
-#: src/lib/film.cc:1529
+#: src/lib/film.cc:1578
 msgid ""
 "You have more than one piece of Atmos content, and they do not have the same "
 "frame rate.  You must remove some Atmos content."
 msgstr ""
 
-#: src/lib/hints.cc:561
+#: src/lib/hints.cc:558
 msgid ""
 "You have overlapping closed captions, which are not allowed in Interop "
 "DCPs.  Change your DCP standard to SMPTE."
 msgstr ""
 
-#: src/lib/hints.cc:274
+#: src/lib/hints.cc:271
 msgid ""
 "You have specified a font file which is larger than 640kB.  This is very "
 "likely to cause problems on playback."
@@ -1739,12 +1746,12 @@ msgstr ""
 "Wskazana przez Ciebie czcionka ma rozmiar większy niż 640kB. "
 "Najprawdopodobniej spowoduje to problemy podczas odtwarzania."
 
-#: src/lib/film.cc:385
+#: src/lib/film.cc:396
 #, fuzzy
 msgid "You must add some content to the DCP before creating it"
 msgstr "musisz najpierw dodać jakieś pliki zanim utworzysz DCP"
 
-#: src/lib/hints.cc:112
+#: src/lib/hints.cc:109
 msgid ""
 "Your DCP has fewer than 6 audio channels.  This may cause problems on some "
 "projectors.  You may want to set the DCP to have 6 channels.  It does not "
@@ -1752,7 +1759,7 @@ msgid ""
 "extras with silence."
 msgstr ""
 
-#: src/lib/hints.cc:160
+#: src/lib/hints.cc:157
 #, fuzzy
 msgid ""
 "Your DCP uses an unusual container ratio.  This may cause problems on some "
@@ -1762,7 +1769,7 @@ msgstr ""
 "problemy z odtwarzaniem na niektórych serwerach. Jeśli to możliwe, ustaw "
 "rozdzielczość na Flat lub Scope"
 
-#: src/lib/hints.cc:340
+#: src/lib/hints.cc:337
 msgid ""
 "Your audio level is very high (on %1).  You should reduce the gain of your "
 "audio content."
@@ -1770,7 +1777,7 @@ msgstr ""
 "Poziom dźwięku jest bardzo wysoki (%1). Powinieneś zmniejszyć głośność "
 "materiału dźwiękowego."
 
-#: src/lib/config.cc:289
+#: src/lib/config.cc:287
 msgid ""
 "Your default container is not valid and has been changed to Flat (1.85:1)"
 msgstr ""
@@ -1794,7 +1801,7 @@ msgstr "[ruchome obrazy]"
 msgid "[still]"
 msgstr "[stopklatka]"
 
-#: src/lib/dcp_subtitle_content.cc:97 src/lib/string_text_file_content.cc:78
+#: src/lib/dcp_subtitle_content.cc:98 src/lib/string_text_file_content.cc:78
 msgid "[subtitles]"
 msgstr "[napisy]"
 
@@ -1812,11 +1819,11 @@ msgstr "minął czas połączenia"
 msgid "connecting"
 msgstr "łączenie"
 
-#: src/lib/film.cc:381
+#: src/lib/film.cc:392
 msgid "container"
 msgstr "kontener"
 
-#: src/lib/film.cc:393
+#: src/lib/film.cc:404
 msgid "content type"
 msgstr "typ materiału"
 
@@ -1872,89 +1879,89 @@ msgstr "wystąpił błąd podczas async_read (%1)"
 msgid "error during async_write (%1)"
 msgstr "wystąpił błąd podczas async_write (%1)"
 
-#: src/lib/content.cc:473 src/lib/content.cc:482
+#: src/lib/content.cc:477 src/lib/content.cc:486
 msgid "frames per second"
 msgstr "klatek na sekundę"
 
 #. / TRANSLATORS: h here is an abbreviation for hours
-#: src/lib/util.cc:200
+#: src/lib/util.cc:203
 msgid "h"
 msgstr "g"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:750
+#: src/lib/dcp_content.cc:752
 #, fuzzy
 msgid "it does not have closed captions in all its reels."
 msgstr "DCP nie ma dźwięku w żadnej rolce."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:739
+#: src/lib/dcp_content.cc:741
 #, fuzzy
 msgid "it does not have open subtitles in all its reels."
 msgstr "DCP nie ma napisów w żadnej rolce."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:706
+#: src/lib/dcp_content.cc:708
 #, fuzzy
 msgid "it does not have sound in all its reels."
 msgstr "DCP nie ma dźwięku w żadnej rolce."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:610
+#: src/lib/dcp_content.cc:612
 #, fuzzy
 msgid "it has a different frame rate to the film."
 msgstr "Liczba kl/s w Projekcie i DCP różnią się."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:765
+#: src/lib/dcp_content.cc:767
 msgid ""
 "it has a start trim so its subtitles or closed captions must be re-written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:667
+#: src/lib/dcp_content.cc:669
 #, fuzzy
 msgid "it is 2K and the film is 4K."
 msgstr "Projekt jest ustawiony na Interop, podczas gdy DCP jest SMPTE."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:664
+#: src/lib/dcp_content.cc:666
 #, fuzzy
 msgid "it is 4K and the film is 2K."
 msgstr "Projekt jest ustawiony na Interop, podczas gdy DCP jest SMPTE."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:598
+#: src/lib/dcp_content.cc:600
 #, fuzzy
 msgid "it is Interop and the film is set to SMPTE."
 msgstr "Projekt jest ustawiony na Interop, podczas gdy DCP jest SMPTE."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:602
+#: src/lib/dcp_content.cc:604
 #, fuzzy
 msgid "it is SMPTE and the film is set to Interop."
 msgstr "Projekt jest ustawiony na SMPTE, podczas gdy DCP jest Interop."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:712
+#: src/lib/dcp_content.cc:714
 #, fuzzy
 msgid "it overlaps other audio content; remove the other content."
 msgstr "Inna ścieżka dźwiękowa pokrywa się z tym DCP; usuń ją."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:770
+#: src/lib/dcp_content.cc:772
 #, fuzzy
 msgid "it overlaps other text content; remove the other content."
 msgstr "Inna ścieżka obrazu pokrywa się z tym DCP; usuń ją."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:677
+#: src/lib/dcp_content.cc:679
 #, fuzzy
 msgid "it overlaps other video content; remove the other content."
 msgstr "Inna ścieżka obrazu pokrywa się z tym DCP; usuń ją."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:633
+#: src/lib/dcp_content.cc:635
 #, fuzzy
 msgid ""
 "its reel lengths differ from those in the film; set the reel mode to 'split "
@@ -1964,13 +1971,13 @@ msgstr ""
 "rolek na 'podziel zgodnie z zawartością paczki' w zakładce 'DCP'."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:672
+#: src/lib/dcp_content.cc:674
 #, fuzzy
 msgid "its video frame size differs from the film's."
 msgstr "Rozdzielczość obrazu w Projekcie rożni się od tej w DCP."
 
 #. / TRANSLATORS: m here is an abbreviation for minutes
-#: src/lib/util.cc:209
+#: src/lib/util.cc:212
 msgid "m"
 msgstr "m"
 
@@ -1978,26 +1985,26 @@ msgstr "m"
 msgid "moving"
 msgstr "przenoszenie"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "name"
 msgstr "nazwa"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:756
+#: src/lib/dcp_content.cc:758
 msgid ""
 "one of its closed caption has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:743
+#: src/lib/dcp_content.cc:745
 msgid ""
 "one of its subtitle reels has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: s here is an abbreviation for seconds
-#: src/lib/util.cc:219
+#: src/lib/util.cc:222
 msgid "s"
 msgstr "s"
 
@@ -2005,7 +2012,7 @@ msgstr "s"
 msgid "sRGB"
 msgstr "sRGB"
 
-#: src/lib/film.cc:402
+#: src/lib/film.cc:413
 msgid "some of your content is missing"
 msgstr "brakuje części materiałów"
 
@@ -2017,7 +2024,7 @@ msgstr "stopklatka"
 msgid "unknown"
 msgstr "nieznany"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "video frames"
 msgstr "klatki obrazu"
 
diff --git a/src/lib/po/pt_BR.po b/src/lib/po/pt_BR.po
index 29c110f84..f53116fa6 100644
--- a/src/lib/po/pt_BR.po
+++ b/src/lib/po/pt_BR.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-08-20 23:10+0200\n"
+"POT-Creation-Date: 2021-10-17 15:26+0200\n"
 "PO-Revision-Date: 2018-01-15 16:19-0200\n"
 "Last-Translator: \n"
 "Language-Team: \n"
@@ -17,7 +17,7 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "X-Generator: Poedit 2.0.5\n"
 
-#: src/lib/video_content.cc:486
+#: src/lib/video_content.cc:496
 #, c-format
 msgid ""
 "\n"
@@ -26,7 +26,7 @@ msgstr ""
 "\n"
 "Taxa de quadros do conteúdo %.4f\n"
 
-#: src/lib/video_content.cc:451
+#: src/lib/video_content.cc:461
 msgid ""
 "\n"
 "Cropped to %1x%2"
@@ -34,7 +34,7 @@ msgstr ""
 "\n"
 "Redimensionado para %1x%2"
 
-#: src/lib/video_content.cc:444
+#: src/lib/video_content.cc:452
 #, c-format
 msgid ""
 "\n"
@@ -43,7 +43,7 @@ msgstr ""
 "\n"
 "Proporções de exibição %.2f:1"
 
-#: src/lib/video_content.cc:474
+#: src/lib/video_content.cc:484
 msgid ""
 "\n"
 "Padded with black to fit container %1 (%2x%3)"
@@ -51,7 +51,7 @@ msgstr ""
 "\n"
 "Preenchido com barras pretas %1 (%2x%3)"
 
-#: src/lib/video_content.cc:464
+#: src/lib/video_content.cc:474
 msgid ""
 "\n"
 "Scaled to %1x%2"
@@ -59,7 +59,7 @@ msgstr ""
 "\n"
 "Redimensionado para %1x%2"
 
-#: src/lib/video_content.cc:468 src/lib/video_content.cc:479
+#: src/lib/video_content.cc:478 src/lib/video_content.cc:489
 #, c-format
 msgid " (%.2f:1)"
 msgstr " (%.2f:1)"
@@ -104,7 +104,7 @@ msgstr ""
 msgid "%1 [Atmos]"
 msgstr "%1 [Dolby Atmos]"
 
-#: src/lib/dcp_content.cc:318
+#: src/lib/dcp_content.cc:320
 msgid "%1 [DCP]"
 msgstr "%1 [DCP]"
 
@@ -120,7 +120,7 @@ msgstr "%1 [movie]"
 msgid "%1 [video]"
 msgstr "%1 [video]"
 
-#: src/lib/video_content.cc:439
+#: src/lib/video_content.cc:447
 #, c-format
 msgid ", pixel aspect ratio %.2f:1"
 msgstr ", aspect ratio do pixel %.2f:1"
@@ -169,7 +169,7 @@ msgstr "2.39 (Scope)"
 msgid "3D denoiser"
 msgstr "Redutor de ruído 3D"
 
-#: src/lib/hints.cc:212
+#: src/lib/hints.cc:209
 msgid ""
 "4K 3D is only supported by a very limited number of projectors.  Unless you "
 "know that you will play this DCP back on a capable projector, it is "
@@ -201,7 +201,7 @@ msgid ""
 "Paypal to donate €10</a></ul><p>Thank you!"
 msgstr ""
 
-#: src/lib/hints.cc:169
+#: src/lib/hints.cc:166
 msgid ""
 "A few projectors have problems playing back very high bit-rate DCPs.  It is "
 "a good idea to drop the JPEG2000 bandwidth down to about 200Mbit/s; this is "
@@ -212,6 +212,13 @@ msgstr ""
 "esse bit-rate produz conteúdo que é visualmente quase indistinguível de "
 "conteúdos encodados no limite de 250Mbits/s."
 
+#: src/lib/text_content.cc:248
+msgid ""
+"A subtitle or closed caption file in this project is marked with the "
+"language '%1', which DCP-o-matic does not recognise.  The file's language "
+"has been cleared."
+msgstr ""
+
 #: src/lib/ffmpeg_content.cc:635
 msgid "ARIB STD-B67 ('Hybrid log-gamma')"
 msgstr "ARIB STD-B67 ('Hybrid log-gamma')"
@@ -220,7 +227,7 @@ msgstr "ARIB STD-B67 ('Hybrid log-gamma')"
 msgid "Advertisement"
 msgstr "Comercial"
 
-#: src/lib/hints.cc:146
+#: src/lib/hints.cc:143
 msgid ""
 "All of your content is in Scope (2.39:1) but your DCP's container is Flat "
 "(1.85:1).  This will letter-box your content inside a Flat (1.85:1) frame.  "
@@ -232,7 +239,7 @@ msgstr ""
 "superior e inferior do frame Flat. Talvez seja mais indicado criar um DCP "
 "Scope, escolhendo Scope (2.39:1) no tab \"DCP\"."
 
-#: src/lib/hints.cc:150
+#: src/lib/hints.cc:147
 #, fuzzy
 msgid ""
 "All of your content narrower than 1.90:1 but your DCP's container is Scope "
@@ -258,54 +265,54 @@ msgstr "Analisar áudio"
 msgid "Analysing subtitles"
 msgstr "Buscando legendas"
 
-#: src/lib/hints.cc:368
+#: src/lib/hints.cc:365
 msgid ""
 "At least one marker comes after the end of the project and will be ignored."
 msgstr ""
 
-#: src/lib/hints.cc:473
+#: src/lib/hints.cc:470
 msgid "At least one of your closed caption files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:466
+#: src/lib/hints.cc:463
 msgid "At least one of your closed caption files' XML part is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:481
+#: src/lib/hints.cc:478
 msgid "At least one of your subtitle files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:445
+#: src/lib/hints.cc:442
 msgid ""
 "At least one of your subtitle lines has more than 52 characters.  It is "
 "recommended to make each line 52 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:447
+#: src/lib/hints.cc:444
 msgid ""
 "At least one of your subtitle lines has more than 79 characters.  You should "
 "make each line 79 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:590
+#: src/lib/hints.cc:587
 msgid ""
 "At least one of your subtitles has more than 3 lines.  It is advisable to "
 "use no more than 3 lines."
 msgstr ""
 
-#: src/lib/hints.cc:580
+#: src/lib/hints.cc:577
 msgid ""
 "At least one of your subtitles lasts less than 15 frames.  It is advisable "
 "to make each subtitle at least 15 frames long."
 msgstr ""
 
-#: src/lib/hints.cc:585
+#: src/lib/hints.cc:582
 msgid ""
 "At least one of your subtitles starts less than 2 frames after the previous "
 "one.  It is advisable to make the gap between subtitles at least 2 frames."
 msgstr ""
 
-#: src/lib/hints.cc:633
+#: src/lib/hints.cc:630
 msgid ""
 "At least one piece of subtitle or closed caption content has no specified "
 "language.  It is advisable to set the language for each piece of subtitle or "
@@ -379,15 +386,15 @@ msgstr "Bits por pixel"
 msgid "Bob Weaver Deinterlacing Filter"
 msgstr "Yet Another Deinterlacing Filter (YADIF)"
 
-#: src/lib/util.cc:598
+#: src/lib/util.cc:601
 msgid "BsL"
 msgstr "BsL"
 
-#: src/lib/util.cc:599
+#: src/lib/util.cc:602
 msgid "BsR"
 msgstr "BsR"
 
-#: src/lib/util.cc:590
+#: src/lib/util.cc:593
 msgid "C"
 msgstr "C"
 
@@ -395,7 +402,7 @@ msgstr "C"
 msgid "Cancelled"
 msgstr "Cancelado"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 #, fuzzy
 msgid "Cannot contain slashes"
 msgstr "não pode conter barras"
@@ -404,11 +411,11 @@ msgstr "não pode conter barras"
 msgid "Cannot handle pixel format %1 during %2"
 msgstr "Impossível processar formato de pixel %1 durante %2"
 
-#: src/lib/film.cc:1662
+#: src/lib/film.cc:1711
 msgid "Cannot make a KDM as this project is not encrypted."
 msgstr ""
 
-#: src/lib/util.cc:559
+#: src/lib/util.cc:562
 msgid "Centre"
 msgstr "Central"
 
@@ -479,7 +486,7 @@ msgstr ""
 msgid "Computing digest"
 msgstr "Computando processamento"
 
-#: src/lib/writer.cc:535
+#: src/lib/writer.cc:531
 msgid "Computing digests"
 msgstr "Computando processamento"
 
@@ -511,7 +518,7 @@ msgid "Content to be joined must all have or not have video"
 msgstr ""
 "Todos os conteúdos a serem concatenados devem conter ou não conter vídeo"
 
-#: src/lib/text_content.cc:305
+#: src/lib/text_content.cc:320
 #, fuzzy
 msgid ""
 "Content to be joined must both be main subtitle languages or both additional."
@@ -519,18 +526,18 @@ msgstr ""
 "O conteúdo a ser concatenado deve ter o mesmo espaçamento de linha de "
 "legenda."
 
-#: src/lib/video_content.cc:207
+#: src/lib/video_content.cc:210
 #, fuzzy
 msgid "Content to be joined must have all its video used or not used."
 msgstr "O conteúdo a ser concatenado deve ter a mesma taxa de quadros"
 
-#: src/lib/text_content.cc:260
+#: src/lib/text_content.cc:275
 msgid "Content to be joined must have the same 'burn subtitles' setting."
 msgstr ""
 "O conteúdo a ser concatenado deve ter a mesma configuração de 'queimar "
 "legendas na imagem'."
 
-#: src/lib/text_content.cc:256
+#: src/lib/text_content.cc:271
 msgid "Content to be joined must have the same 'use subtitles' setting."
 msgstr ""
 "O conteúdo a ser concatenado deve ter a mesma configuração em 'usar "
@@ -544,75 +551,75 @@ msgstr "O conteúdo a ser concatenado deve ter o mesmo atraso de áudio."
 msgid "Content to be joined must have the same audio gain."
 msgstr "O conteúdo a ser concatenado deve ter o mesmo ganho de áudio."
 
-#: src/lib/video_content.cc:239
+#: src/lib/video_content.cc:242
 #, fuzzy
 msgid "Content to be joined must have the same burnt subtitle language."
 msgstr ""
 "O conteúdo a ser concatenado deve ter a mesma configuração de 'queimar "
 "legendas na imagem'."
 
-#: src/lib/video_content.cc:231
+#: src/lib/video_content.cc:234
 msgid "Content to be joined must have the same colour conversion."
 msgstr "O conteúdo a ser concatenado deve ter a mesma conversão de cor."
 
-#: src/lib/video_content.cc:219
+#: src/lib/video_content.cc:222
 msgid "Content to be joined must have the same crop."
 msgstr "O conteúdo a ser concatenado deve ter o mesmo recorte de imagem."
 
-#: src/lib/video_content.cc:223
+#: src/lib/video_content.cc:226
 #, fuzzy
 msgid "Content to be joined must have the same custom ratio setting."
 msgstr ""
 "O conteúdo a ser concatenado deve ter o mesmo redimensionamento de imagem."
 
-#: src/lib/video_content.cc:227
+#: src/lib/video_content.cc:230
 #, fuzzy
 msgid "Content to be joined must have the same custom size setting."
 msgstr ""
 "O conteúdo a ser concatenado deve ter o mesmo redimensionamento de imagem."
 
-#: src/lib/video_content.cc:235
+#: src/lib/video_content.cc:238
 msgid "Content to be joined must have the same fades."
 msgstr ""
 "O conteúdo a ser concatenado deve ter as mesmas 'fade in' e 'fade out'."
 
-#: src/lib/text_content.cc:288
+#: src/lib/text_content.cc:303
 msgid "Content to be joined must have the same outline width."
 msgstr "O conteúdo a ser concatenado deve ter a mesma largura de borda."
 
-#: src/lib/video_content.cc:211
+#: src/lib/video_content.cc:214
 msgid "Content to be joined must have the same picture size."
 msgstr "O conteúdo a ser concatenado deve ter o mesmo tamanho de imagem."
 
-#: src/lib/text_content.cc:264
+#: src/lib/text_content.cc:279
 msgid "Content to be joined must have the same subtitle X offset."
 msgstr ""
 "O conteúdo a ser concatenado deve ter o mesmo reposicionamento de legenda no "
 "eixo X."
 
-#: src/lib/text_content.cc:272
+#: src/lib/text_content.cc:287
 msgid "Content to be joined must have the same subtitle X scale."
 msgstr ""
 "O conteúdo a ser concatenado deve ter o mesmo redimensionamento de legenda "
 "no eixo X."
 
-#: src/lib/text_content.cc:268
+#: src/lib/text_content.cc:283
 msgid "Content to be joined must have the same subtitle Y offset."
 msgstr ""
 "O conteúdo a ser concatenado deve ter o mesmo reposicionamento de legenda no "
 "eixo Y."
 
-#: src/lib/text_content.cc:276
+#: src/lib/text_content.cc:291
 msgid "Content to be joined must have the same subtitle Y scale."
 msgstr ""
 "O conteúdo a ser concatenado deve ter o mesmo redimensionamento de legenda "
 "no eixo Y."
 
-#: src/lib/text_content.cc:284
+#: src/lib/text_content.cc:299
 msgid "Content to be joined must have the same subtitle fades."
 msgstr "O conteúdo a ser concatenado deve ter os mesmos fades de legendas."
 
-#: src/lib/text_content.cc:280
+#: src/lib/text_content.cc:295
 msgid "Content to be joined must have the same subtitle line spacing."
 msgstr ""
 "O conteúdo a ser concatenado deve ter o mesmo espaçamento de linha de "
@@ -622,16 +629,16 @@ msgstr ""
 msgid "Content to be joined must have the same video frame rate"
 msgstr "O conteúdo a ser concatenado deve ter a mesma taxa de quadros"
 
-#: src/lib/video_content.cc:215
+#: src/lib/video_content.cc:218
 msgid "Content to be joined must have the same video frame type."
 msgstr "O conteúdo a ser concatenado deve ter o mesmo tipo de quadro."
 
-#: src/lib/text_content.cc:297
+#: src/lib/text_content.cc:312
 #, fuzzy
 msgid "Content to be joined must use the same DCP track."
 msgstr "O conteúdo a ser concatenado deve usar as mesmas fontes."
 
-#: src/lib/text_content.cc:293 src/lib/text_content.cc:313
+#: src/lib/text_content.cc:308 src/lib/text_content.cc:328
 msgid "Content to be joined must use the same fonts."
 msgstr "O conteúdo a ser concatenado deve usar as mesmas fontes."
 
@@ -639,12 +646,12 @@ msgstr "O conteúdo a ser concatenado deve usar as mesmas fontes."
 msgid "Content to be joined must use the same subtitle stream."
 msgstr "O conteúdo a ser concatenado deve usar a mesma faixa de legendas."
 
-#: src/lib/text_content.cc:301
+#: src/lib/text_content.cc:316
 #, fuzzy
 msgid "Content to be joined must use the same text language."
 msgstr "O conteúdo a ser concatenado deve usar as mesmas fontes."
 
-#: src/lib/video_content.cc:430
+#: src/lib/video_content.cc:438
 msgid "Content video is %1x%2"
 msgstr "O conteúdo tem %1x%2"
 
@@ -669,7 +676,7 @@ msgstr "Impossível conectar com o servidor %1 (%2)"
 msgid "Could not create remote directory %1 (%2)"
 msgstr "Impossível criar diretório remoto %1 (%2)"
 
-#: src/lib/image_examiner.cc:65
+#: src/lib/image_examiner.cc:64
 msgid "Could not decode JPEG2000 file %1 (%2)"
 msgstr "Impossível decodificar arquivo JPEG2000 %1 (%2)"
 
@@ -708,7 +715,7 @@ msgstr "Impossível abrir arquivo ZIP baixado"
 msgid "Could not open file for writing"
 msgstr "não foi possível abrir o arquivo %1 para gravação (%2)"
 
-#: src/lib/ffmpeg_file_encoder.cc:269
+#: src/lib/ffmpeg_file_encoder.cc:265
 #, fuzzy
 msgid "Could not open output file %1 (%2)"
 msgstr "não foi possível modificar o arquivo %1 (%2)"
@@ -725,19 +732,19 @@ msgstr "Impossível iniciar transferência"
 msgid "Could not write to remote file (%1)"
 msgstr "Impossível modificar arquivo remoto (%1)"
 
-#: src/lib/util.cc:569
+#: src/lib/util.cc:572
 msgid "D-BOX primary"
 msgstr "D-BOX primário"
 
-#: src/lib/util.cc:570
+#: src/lib/util.cc:573
 msgid "D-BOX secondary"
 msgstr "D-BOX secundário"
 
-#: src/lib/util.cc:600
+#: src/lib/util.cc:603
 msgid "DBP"
 msgstr "DBP"
 
-#: src/lib/util.cc:601
+#: src/lib/util.cc:604
 msgid "DBS"
 msgstr "DBS"
 
@@ -749,7 +756,7 @@ msgstr "DCI Flat"
 msgid "DCI Scope"
 msgstr "DCI Scope"
 
-#: src/lib/dcp_subtitle_content.cc:103
+#: src/lib/dcp_subtitle_content.cc:104
 msgid "DCP XML subtitles"
 msgstr "Legendas XML do DCP"
 
@@ -774,13 +781,13 @@ msgstr ""
 "O DCP-o-matic não pôde abrir o arquivo %1 (%2). Talvez o arquivo não exista "
 "ou tenha um formato não suportado."
 
-#: src/lib/film.cc:1565
+#: src/lib/film.cc:1614
 msgid ""
 "DCP-o-matic had to change your settings for referring to DCPs as OV.  Please "
 "review those settings to make sure they are what you want."
 msgstr ""
 
-#: src/lib/film.cc:1533
+#: src/lib/film.cc:1582
 msgid ""
 "DCP-o-matic had to change your settings so that the film's frame rate is the "
 "same as that of your Atmos content."
@@ -792,7 +799,7 @@ msgid ""
 msgstr ""
 "O DCP-o-matic não aceita mais o filtro `%1', portanto ele foi desativado."
 
-#: src/lib/config.cc:359 src/lib/config.cc:1114
+#: src/lib/config.cc:357 src/lib/config.cc:1114
 msgid "DCP-o-matic notification"
 msgstr ""
 
@@ -886,7 +893,7 @@ msgstr "Erro no arquivo de legenda:: %1 encontrado quando se esperava %2"
 msgid "Error: %1"
 msgstr "Erro: %1"
 
-#: src/lib/hints.cc:408
+#: src/lib/hints.cc:405
 msgid "Examining audio, subtitles and closed captions"
 msgstr ""
 
@@ -900,7 +907,7 @@ msgstr "Examinar conteúdo"
 msgid "Examining subtitles"
 msgstr "Buscando legendas"
 
-#: src/lib/hints.cc:406
+#: src/lib/hints.cc:403
 #, fuzzy
 msgid "Examining subtitles and closed captions"
 msgstr "Buscando legendas"
@@ -932,7 +939,7 @@ msgstr "Falha no envio de email (%1)"
 msgid "Feature"
 msgstr "Longa-metragem"
 
-#: src/lib/content.cc:464
+#: src/lib/content.cc:468
 msgid "Filename"
 msgstr "Nome do arquivo"
 
@@ -944,11 +951,11 @@ msgstr "Filme"
 msgid "Finding length"
 msgstr "Buscando duração"
 
-#: src/lib/content.cc:471
+#: src/lib/content.cc:475
 msgid "Frame rate"
 msgstr "Taxa de quadros"
 
-#: src/lib/util.cc:943
+#: src/lib/util.cc:946
 msgid "Friday"
 msgstr ""
 
@@ -992,11 +999,11 @@ msgstr "Gama 28 (BT470BG)"
 msgid "Gradient debander"
 msgstr "Removedor de posterização em gradações"
 
-#: src/lib/util.cc:594
+#: src/lib/util.cc:597
 msgid "HI"
 msgstr "HI"
 
-#: src/lib/util.cc:563
+#: src/lib/util.cc:566
 msgid "Hearing impaired"
 msgstr "Trilha deficientes auditivos"
 
@@ -1020,18 +1027,18 @@ msgstr "IEC61966-2-1 (sRGB ou sYCC)"
 msgid "IEC61966-2-4"
 msgstr "IEC61966-2-4"
 
-#: src/lib/hints.cc:188
+#: src/lib/hints.cc:185
 msgid "If you do use 25fps you should change your DCP standard to SMPTE."
 msgstr ""
 
-#: src/lib/hints.cc:251
+#: src/lib/hints.cc:248
 msgid ""
 "In general it is now advisable to make SMPTE DCPs unless you have a "
 "particular reason to use Interop.  You are advised to set your DCP to use "
 "the SMPTE standard in the \"DCP\" tab."
 msgstr ""
 
-#: src/lib/hints.cc:573
+#: src/lib/hints.cc:570
 msgid ""
 "It is advisable to put your first subtitle at least 4 seconds after the "
 "start of the DCP to make sure it is seen."
@@ -1045,7 +1052,7 @@ msgstr "Erro desconhecido."
 msgid "JEDEC P22"
 msgstr ""
 
-#: src/lib/config.cc:349 src/lib/config.cc:1099
+#: src/lib/config.cc:347 src/lib/config.cc:1099
 msgid "KDM delivery: $CPL_NAME"
 msgstr "Entrega de KDM: $CPL_NAME"
 
@@ -1053,39 +1060,39 @@ msgstr "Entrega de KDM: $CPL_NAME"
 msgid "Kernel deinterlacer"
 msgstr "Desentrelaçador (kernel)"
 
-#: src/lib/ffmpeg_encoder.cc:251 src/lib/util.cc:588
+#: src/lib/ffmpeg_encoder.cc:253 src/lib/util.cc:591
 msgid "L"
 msgstr "L"
 
-#: src/lib/util.cc:596
+#: src/lib/util.cc:599
 msgid "Lc"
 msgstr "Lc"
 
-#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:557
+#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:560
 msgid "Left"
 msgstr "Esquerdo"
 
-#: src/lib/util.cc:565
+#: src/lib/util.cc:568
 msgid "Left centre"
 msgstr "Esquerdo central"
 
-#: src/lib/util.cc:567
+#: src/lib/util.cc:570
 msgid "Left rear surround"
 msgstr "Surround traseiro esquerdo"
 
-#: src/lib/util.cc:561
+#: src/lib/util.cc:564
 msgid "Left surround"
 msgstr "Surround esquerdo"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "Length"
 msgstr "Duração"
 
-#: src/lib/util.cc:591
+#: src/lib/util.cc:594
 msgid "Lfe"
 msgstr "Lfe"
 
-#: src/lib/util.cc:560
+#: src/lib/util.cc:563
 msgid "Lfe (sub)"
 msgstr "Lfe (sub)"
 
@@ -1109,11 +1116,11 @@ msgstr "Logarítmico (faixa 100:1)"
 msgid "Logarithmic (316:1 range)"
 msgstr "Logarítmico (faixa 316:1)"
 
-#: src/lib/exceptions.cc:145
+#: src/lib/exceptions.cc:152
 msgid "Lost communication between main and writer processes"
 msgstr ""
 
-#: src/lib/util.cc:592
+#: src/lib/util.cc:595
 msgid "Ls"
 msgstr "Ls"
 
@@ -1125,19 +1132,19 @@ msgstr "Decodificador Mid-Side (MS)"
 msgid "Misc"
 msgstr "Misc"
 
-#: src/lib/dcp_examiner.cc:164
+#: src/lib/dcp_examiner.cc:175
 msgid "Mismatched audio channel counts in DCP"
 msgstr "Contagem de canais inconsistente no DCP"
 
-#: src/lib/dcp_examiner.cc:170
+#: src/lib/dcp_examiner.cc:181
 msgid "Mismatched audio sample rates in DCP"
 msgstr "Taxas de amostragem de áudio inconsistentes no DCP"
 
-#: src/lib/dcp_examiner.cc:137
+#: src/lib/dcp_examiner.cc:145
 msgid "Mismatched frame rates in DCP"
 msgstr "Taxas de quadros inconsistentes no DCP"
 
-#: src/lib/dcp_examiner.cc:145
+#: src/lib/dcp_examiner.cc:153
 msgid "Mismatched video sizes in DCP"
 msgstr "Tamanhos de conteúdo inconsistentes no DCP"
 
@@ -1146,11 +1153,11 @@ msgstr "Tamanhos de conteúdo inconsistentes no DCP"
 msgid "Missing required setting %1"
 msgstr "falta configuração obrigatória %1"
 
-#: src/lib/util.cc:935
+#: src/lib/util.cc:938
 msgid "Monday"
 msgstr ""
 
-#: src/lib/writer.cc:763
+#: src/lib/writer.cc:759
 msgid "Mono"
 msgstr "Mono"
 
@@ -1174,7 +1181,7 @@ msgstr "Não foram encontradas imagens válidas na pasta."
 msgid "Noise reduction"
 msgstr "Redução de ruído"
 
-#: src/lib/writer.cc:731 src/lib/writer.cc:738 src/lib/writer.cc:761
+#: src/lib/writer.cc:727 src/lib/writer.cc:734 src/lib/writer.cc:757
 msgid "None"
 msgstr "Nenhum"
 
@@ -1213,7 +1220,7 @@ msgstr "Redução de ruído tipo overcomplete wavelet"
 msgid "P3"
 msgstr "P3"
 
-#: src/lib/util.h:59
+#: src/lib/util.h:64
 msgid ""
 "Please report this problem by using Help -> Report a problem or via email to "
 "carl@dcpomatic.com"
@@ -1223,7 +1230,7 @@ msgstr ""
 msgid "Policy"
 msgstr "Comunicado"
 
-#: src/lib/content.cc:480
+#: src/lib/content.cc:484
 msgid "Prepared for video frame rate"
 msgstr "Preparado para frame rate de vídeo"
 
@@ -1239,7 +1246,7 @@ msgstr ""
 msgid "Public Service Announcement"
 msgstr "Anúncio de Utilidade Pública"
 
-#: src/lib/ffmpeg_encoder.cc:256 src/lib/util.cc:589
+#: src/lib/ffmpeg_encoder.cc:258 src/lib/util.cc:592
 msgid "R"
 msgstr "R"
 
@@ -1251,7 +1258,7 @@ msgstr "RGB / sRGB (IEC61966-2-1)"
 msgid "Rating"
 msgstr "Classificação"
 
-#: src/lib/util.cc:597
+#: src/lib/util.cc:600
 msgid "Rc"
 msgstr "Rc"
 
@@ -1271,19 +1278,19 @@ msgstr "Rec. 601"
 msgid "Rec. 709"
 msgstr "Rec. 709"
 
-#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:558
+#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:561
 msgid "Right"
 msgstr "Direito"
 
-#: src/lib/util.cc:566
+#: src/lib/util.cc:569
 msgid "Right centre"
 msgstr "Direito central"
 
-#: src/lib/util.cc:568
+#: src/lib/util.cc:571
 msgid "Right rear surround"
 msgstr "Surround traseiro direito"
 
-#: src/lib/util.cc:562
+#: src/lib/util.cc:565
 msgid "Right surround"
 msgstr "Surround direito"
 
@@ -1295,7 +1302,7 @@ msgstr ""
 msgid "Rotate 90 degrees clockwise"
 msgstr ""
 
-#: src/lib/util.cc:593
+#: src/lib/util.cc:596
 msgid "Rs"
 msgstr "Rs"
 
@@ -1320,7 +1327,7 @@ msgstr "SMPTE 2085, Y'D'zD'x"
 msgid "SMPTE 240M"
 msgstr "SMPTE 240M"
 
-#: src/lib/hints.cc:615
+#: src/lib/hints.cc:612
 msgid ""
 "SMPTE DCPs with the type FTR (feature) should have markers for the first "
 "frame of end credits (FFEC) and the first frame of moving credits (FFMC).  "
@@ -1358,7 +1365,7 @@ msgstr "SSH erro (%1)"
 msgid "SSH error [%1] (%2)"
 msgstr "SSH erro (%1)"
 
-#: src/lib/util.cc:945
+#: src/lib/util.cc:948
 msgid "Saturday"
 msgstr ""
 
@@ -1374,11 +1381,11 @@ msgstr "Enviando email"
 msgid "Short"
 msgstr "Curta-metragem"
 
-#: src/lib/util.cc:602
+#: src/lib/util.cc:605
 msgid "Sign"
 msgstr ""
 
-#: src/lib/video_content.cc:500
+#: src/lib/video_content.cc:510
 msgid "Size"
 msgstr "Tamanho"
 
@@ -1399,30 +1406,30 @@ msgid ""
 "project in DCP-o-matic, check the settings, then save it before trying again."
 msgstr ""
 
-#: src/lib/hints.cc:554
+#: src/lib/hints.cc:551
 msgid ""
 "Some of your closed captions span more than %1 lines, so they will be "
 "truncated."
 msgstr ""
 
-#: src/lib/hints.cc:653
+#: src/lib/hints.cc:650
 msgid ""
 "Some of your content has audio but you have not set the audio language.  It "
 "is advisable to set the audio language in the \"DCP\" tab unless your audio "
 "has no spoken parts."
 msgstr ""
 
-#: src/lib/film.cc:406
+#: src/lib/film.cc:417
 #, fuzzy
 msgid "Some of your content needs a KDM"
 msgstr "uma parte do seu conteúdo necessita de KDM"
 
-#: src/lib/film.cc:409
+#: src/lib/film.cc:420
 #, fuzzy
 msgid "Some of your content needs an OV"
 msgstr "uma parte do seu conteúdo necessita de uma versão original (OV)"
 
-#: src/lib/writer.cc:765
+#: src/lib/writer.cc:761
 msgid "Stereo"
 msgstr "Stereo"
 
@@ -1434,7 +1441,7 @@ msgstr "Upmix de estéreo para 5.1, tipo A"
 msgid "Stereo to 5.1 up-mixer B"
 msgstr "Upmix de estéreo para 5.1, tipo B"
 
-#: src/lib/util.cc:933
+#: src/lib/util.cc:936
 msgid "Sunday"
 msgstr ""
 
@@ -1454,7 +1461,7 @@ msgstr "Teste"
 msgid "Text subtitles"
 msgstr "Legendas em texto"
 
-#: src/lib/film.cc:389
+#: src/lib/film.cc:400
 msgid "The DCP is empty, perhaps because all the content has zero length."
 msgstr ""
 
@@ -1466,7 +1473,7 @@ msgstr "A cadeia de certificado para assinatura é inválida"
 msgid "The certificate chain for signing is invalid (%1)"
 msgstr "A cadeia de certificado para assinatura é inválida (%1)"
 
-#: src/lib/video_decoder.cc:86
+#: src/lib/video_decoder.cc:81
 msgid ""
 "The content file %1 is set as 3D but does not appear to contain 3D images.  "
 "Please set it to 2D.  You can still make a 3D DCP from this content by "
@@ -1497,7 +1504,7 @@ msgstr "O arquivo %1 foi cortado por %2 milissegundos a menos."
 msgid "The file %1 has been trimmed by %2 milliseconds more."
 msgstr "O arquivo %1 foi cortado por %2 milissegundos a mais."
 
-#: src/lib/hints.cc:241
+#: src/lib/hints.cc:238
 msgid ""
 "There is a large difference between the frame rate of your DCP and that of "
 "some of your content.  This will cause your audio to play back at a much "
@@ -1506,7 +1513,7 @@ msgid ""
 "systems support your chosen DCP rate."
 msgstr ""
 
-#: src/lib/dcp_content.cc:657
+#: src/lib/dcp_content.cc:659
 msgid "There is no video in this DCP"
 msgstr ""
 
@@ -1520,11 +1527,11 @@ msgstr ""
 "de 32 bits, tente reduzir o número de threads para codificação no tab Geral "
 "das Preferências, no menu Editar."
 
-#: src/lib/util.cc:1146
+#: src/lib/util.cc:1150
 msgid "This KDM was made for DCP-o-matic but not for its leaf certificate."
 msgstr ""
 
-#: src/lib/util.cc:1144
+#: src/lib/util.cc:1148
 msgid "This KDM was not made for DCP-o-matic's decryption certificate."
 msgstr ""
 
@@ -1551,7 +1558,7 @@ msgstr ""
 "Este arquivo é um KDM.  KDMs devem ser adicionados a conteúdos DCPs clicando-"
 "se com o botão direito no conteúdo e escolhendo \"Adicionar KDM\"."
 
-#: src/lib/film.cc:581
+#: src/lib/film.cc:595
 msgid ""
 "This film was created with a newer version of DCP-o-matic, and it cannot be "
 "loaded into this version.  Sorry!"
@@ -1560,7 +1567,7 @@ msgstr ""
 "ser carregado nesta versão. Desculpe-nos, e considere instalar uma versão "
 "mais recente!"
 
-#: src/lib/film.cc:566
+#: src/lib/film.cc:580
 msgid ""
 "This film was created with an older version of DCP-o-matic, and "
 "unfortunately it cannot be loaded into this version.  You will need to "
@@ -1571,7 +1578,7 @@ msgstr ""
 "seu conteúdo e refazer os ajustes. Desculpe-nos, e considere instalar uma "
 "versão mais recente!"
 
-#: src/lib/util.cc:941
+#: src/lib/util.cc:944
 msgid "Thursday"
 msgstr ""
 
@@ -1592,7 +1599,7 @@ msgstr "Transcodificar %1"
 msgid "Transitional"
 msgstr "Transicional"
 
-#: src/lib/util.cc:937
+#: src/lib/util.cc:940
 msgid "Tuesday"
 msgstr ""
 
@@ -1617,7 +1624,7 @@ msgstr "desconhecido"
 msgid "Unknown error"
 msgstr "Erro desconhecido"
 
-#: src/lib/ffmpeg_decoder.cc:343
+#: src/lib/ffmpeg_decoder.cc:339
 msgid "Unrecognised audio sample format (%1)"
 msgstr "Formato de amostragem de áudio desconhecido (%1)"
 
@@ -1637,7 +1644,7 @@ msgstr "Não especificado"
 msgid "Untitled"
 msgstr "Sem_Título"
 
-#: src/lib/util.cc:571 src/lib/util.cc:572
+#: src/lib/util.cc:574 src/lib/util.cc:575
 msgid "Unused"
 msgstr "Sem uso"
 
@@ -1649,7 +1656,7 @@ msgstr "Upmix L"
 msgid "Upmix R"
 msgstr "Upmix R"
 
-#: src/lib/util.cc:595
+#: src/lib/util.cc:598
 msgid "VI"
 msgstr "VI"
 
@@ -1661,7 +1668,7 @@ msgstr ""
 msgid "Vertical flip"
 msgstr ""
 
-#: src/lib/util.cc:564
+#: src/lib/util.cc:567
 msgid "Visually impaired"
 msgstr "Trilha descritiva"
 
@@ -1674,7 +1681,7 @@ msgstr "Aguardando"
 msgid "Weave filter"
 msgstr "Filtro de Telecine"
 
-#: src/lib/util.cc:939
+#: src/lib/util.cc:942
 msgid "Wednesday"
 msgstr ""
 
@@ -1686,7 +1693,7 @@ msgstr "YCOCG"
 msgid "Yet Another Deinterlacing Filter"
 msgstr "Yet Another Deinterlacing Filter (YADIF)"
 
-#: src/lib/hints.cc:201
+#: src/lib/hints.cc:198
 #, fuzzy
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
@@ -1697,7 +1704,7 @@ msgstr ""
 "suportada. Recomendamos a alteração da taxa de quadros do seu DCP para um "
 "valor padrão, ou que faça um DCP SMPTE."
 
-#: src/lib/hints.cc:185
+#: src/lib/hints.cc:182
 #, fuzzy
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
@@ -1708,7 +1715,7 @@ msgstr ""
 "suportada. Recomendamos a alteração da taxa de quadros do seu DCP para um "
 "valor padrão, ou que faça um DCP SMPTE."
 
-#: src/lib/hints.cc:195
+#: src/lib/hints.cc:192
 #, fuzzy
 msgid ""
 "You are set up for a DCP frame rate of 30fps, which is not supported by all "
@@ -1718,7 +1725,7 @@ msgstr ""
 "suportada. Recomendamos a alteração da taxa de quadros do seu DCP para um "
 "valor padrão, ou que faça um DCP SMPTE."
 
-#: src/lib/hints.cc:306
+#: src/lib/hints.cc:303
 msgid ""
 "You are using 3D content but your DCP is set to 2D.  Set the DCP to 3D if "
 "you want to play it back on a 3D system (e.g. Real-D, MasterImage etc.)"
@@ -1727,14 +1734,14 @@ msgstr ""
 "o DCP para 3D se quiser reprodução correta em um sistema 3D (por exemplo "
 "Real-D, MasterImage, etc.)"
 
-#: src/lib/hints.cc:122
+#: src/lib/hints.cc:119
 msgid ""
 "You are using DCP-o-matic's stereo-to-5.1 upmixer.  This is experimental and "
 "may result in poor-quality audio.  If you continue, you should listen to the "
 "resulting DCP in a cinema to make sure that it sounds good."
 msgstr ""
 
-#: src/lib/hints.cc:290
+#: src/lib/hints.cc:287
 msgid ""
 "You have %1 files that look like they are VOB files from DVD. You should "
 "join them to ensure smooth joins between the files."
@@ -1742,19 +1749,19 @@ msgstr ""
 "Você tem %1 arquivos que parecem ser arquivos VOB de um DVD. É recomendado "
 "que você os concatene previamente para garantir uma reprodução sem cortes."
 
-#: src/lib/film.cc:1529
+#: src/lib/film.cc:1578
 msgid ""
 "You have more than one piece of Atmos content, and they do not have the same "
 "frame rate.  You must remove some Atmos content."
 msgstr ""
 
-#: src/lib/hints.cc:561
+#: src/lib/hints.cc:558
 msgid ""
 "You have overlapping closed captions, which are not allowed in Interop "
 "DCPs.  Change your DCP standard to SMPTE."
 msgstr ""
 
-#: src/lib/hints.cc:274
+#: src/lib/hints.cc:271
 msgid ""
 "You have specified a font file which is larger than 640kB.  This is very "
 "likely to cause problems on playback."
@@ -1762,12 +1769,12 @@ msgstr ""
 "Você especificou um arquivo de fonte que tem mais de 640kB. Isso muito "
 "provavelmente causará problemas na reprodução."
 
-#: src/lib/film.cc:385
+#: src/lib/film.cc:396
 #, fuzzy
 msgid "You must add some content to the DCP before creating it"
 msgstr "você precisa adicionar conteúdo ao DCP antes de criá-lo"
 
-#: src/lib/hints.cc:112
+#: src/lib/hints.cc:109
 msgid ""
 "Your DCP has fewer than 6 audio channels.  This may cause problems on some "
 "projectors.  You may want to set the DCP to have 6 channels.  It does not "
@@ -1775,7 +1782,7 @@ msgid ""
 "extras with silence."
 msgstr ""
 
-#: src/lib/hints.cc:160
+#: src/lib/hints.cc:157
 #, fuzzy
 msgid ""
 "Your DCP uses an unusual container ratio.  This may cause problems on some "
@@ -1785,14 +1792,14 @@ msgstr ""
 "alguns projetores. Se possível, use apenas Flat ou Scope nos formatos de "
 "container."
 
-#: src/lib/hints.cc:340
+#: src/lib/hints.cc:337
 msgid ""
 "Your audio level is very high (on %1).  You should reduce the gain of your "
 "audio content."
 msgstr ""
 "Seu nível de áudio é muito alto (no %1). Reduza o ganho no conteúdo de áudio."
 
-#: src/lib/config.cc:289
+#: src/lib/config.cc:287
 msgid ""
 "Your default container is not valid and has been changed to Flat (1.85:1)"
 msgstr "Seu container padrão não é válido e foi alterado para Flat (1.85:1)"
@@ -1820,7 +1827,7 @@ msgstr "[sequência de imagens]"
 msgid "[still]"
 msgstr "[imagem estática]"
 
-#: src/lib/dcp_subtitle_content.cc:97 src/lib/string_text_file_content.cc:78
+#: src/lib/dcp_subtitle_content.cc:98 src/lib/string_text_file_content.cc:78
 msgid "[subtitles]"
 msgstr "[legendas]"
 
@@ -1838,11 +1845,11 @@ msgstr "connect timed out"
 msgid "connecting"
 msgstr "conectando"
 
-#: src/lib/film.cc:381
+#: src/lib/film.cc:392
 msgid "container"
 msgstr "container"
 
-#: src/lib/film.cc:393
+#: src/lib/film.cc:404
 msgid "content type"
 msgstr "tipo de conteúdo"
 
@@ -1898,89 +1905,89 @@ msgstr "erro durante async_read (%1)"
 msgid "error during async_write (%1)"
 msgstr "erro durante async_write (%1)"
 
-#: src/lib/content.cc:473 src/lib/content.cc:482
+#: src/lib/content.cc:477 src/lib/content.cc:486
 msgid "frames per second"
 msgstr "quadros por segundo"
 
 #. / TRANSLATORS: h here is an abbreviation for hours
-#: src/lib/util.cc:200
+#: src/lib/util.cc:203
 msgid "h"
 msgstr "h"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:750
+#: src/lib/dcp_content.cc:752
 #, fuzzy
 msgid "it does not have closed captions in all its reels."
 msgstr "O DCP não tem som em todos os rolos."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:739
+#: src/lib/dcp_content.cc:741
 #, fuzzy
 msgid "it does not have open subtitles in all its reels."
 msgstr "O DCP não tem legendas em todos os rolos."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:706
+#: src/lib/dcp_content.cc:708
 #, fuzzy
 msgid "it does not have sound in all its reels."
 msgstr "O DCP não tem som em todos os rolos."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:610
+#: src/lib/dcp_content.cc:612
 #, fuzzy
 msgid "it has a different frame rate to the film."
 msgstr "O filme tem uma taxa de quadros diferente deste DCP."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:765
+#: src/lib/dcp_content.cc:767
 msgid ""
 "it has a start trim so its subtitles or closed captions must be re-written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:667
+#: src/lib/dcp_content.cc:669
 #, fuzzy
 msgid "it is 2K and the film is 4K."
 msgstr "O filme está configurado como Interop e este DCP é SMPTE."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:664
+#: src/lib/dcp_content.cc:666
 #, fuzzy
 msgid "it is 4K and the film is 2K."
 msgstr "O filme está configurado como Interop e este DCP é SMPTE."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:598
+#: src/lib/dcp_content.cc:600
 #, fuzzy
 msgid "it is Interop and the film is set to SMPTE."
 msgstr "O filme está configurado como Interop e este DCP é SMPTE."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:602
+#: src/lib/dcp_content.cc:604
 #, fuzzy
 msgid "it is SMPTE and the film is set to Interop."
 msgstr "O filme está configurado como SMPTE e este DCP é Interop."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:712
+#: src/lib/dcp_content.cc:714
 #, fuzzy
 msgid "it overlaps other audio content; remove the other content."
 msgstr "Há outros conteúdos de áudio sobrepostos neste DCP. Remova-os."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:770
+#: src/lib/dcp_content.cc:772
 #, fuzzy
 msgid "it overlaps other text content; remove the other content."
 msgstr "Há outros conteúdos de vídeo sobrepostos neste DCP. Remova-os."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:677
+#: src/lib/dcp_content.cc:679
 #, fuzzy
 msgid "it overlaps other video content; remove the other content."
 msgstr "Há outros conteúdos de vídeo sobrepostos neste DCP. Remova-os."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:633
+#: src/lib/dcp_content.cc:635
 #, fuzzy
 msgid ""
 "its reel lengths differ from those in the film; set the reel mode to 'split "
@@ -1990,13 +1997,13 @@ msgstr ""
 "'Rolos' em 'Dividir por arquivo de conteúdo'."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:672
+#: src/lib/dcp_content.cc:674
 #, fuzzy
 msgid "its video frame size differs from the film's."
 msgstr "O tamanho de quadro do vídeo difere daquele do DCP."
 
 #. / TRANSLATORS: m here is an abbreviation for minutes
-#: src/lib/util.cc:209
+#: src/lib/util.cc:212
 msgid "m"
 msgstr "m"
 
@@ -2004,26 +2011,26 @@ msgstr "m"
 msgid "moving"
 msgstr "movendo"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "name"
 msgstr "nome"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:756
+#: src/lib/dcp_content.cc:758
 msgid ""
 "one of its closed caption has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:743
+#: src/lib/dcp_content.cc:745
 msgid ""
 "one of its subtitle reels has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: s here is an abbreviation for seconds
-#: src/lib/util.cc:219
+#: src/lib/util.cc:222
 msgid "s"
 msgstr "s"
 
@@ -2031,7 +2038,7 @@ msgstr "s"
 msgid "sRGB"
 msgstr "sRGB"
 
-#: src/lib/film.cc:402
+#: src/lib/film.cc:413
 msgid "some of your content is missing"
 msgstr "uma parte do seu conteúdo está faltando"
 
@@ -2043,7 +2050,7 @@ msgstr "imagem estática"
 msgid "unknown"
 msgstr "desconhecido"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "video frames"
 msgstr "quadros de vídeo"
 
diff --git a/src/lib/po/pt_PT.po b/src/lib/po/pt_PT.po
index 8463dbb4f..f311dd51a 100644
--- a/src/lib/po/pt_PT.po
+++ b/src/lib/po/pt_PT.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: DCP-o-matic PORTUGUESE (Portugal)\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-08-20 23:10+0200\n"
+"POT-Creation-Date: 2021-10-17 15:26+0200\n"
 "PO-Revision-Date: 2016-03-19 18:19+0000\n"
 "Last-Translator: Tiago Casal Ribeiro <tiago@casalribeiro.com>\n"
 "Language-Team: \n"
@@ -18,7 +18,7 @@ msgstr ""
 "X-Generator: Poedit 1.8.7.1\n"
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
 
-#: src/lib/video_content.cc:486
+#: src/lib/video_content.cc:496
 #, fuzzy, c-format
 msgid ""
 "\n"
@@ -27,7 +27,7 @@ msgstr ""
 "\n"
 "Cadência de fotogramas do conteúdo %.4f\n"
 
-#: src/lib/video_content.cc:451
+#: src/lib/video_content.cc:461
 #, fuzzy
 msgid ""
 "\n"
@@ -36,7 +36,7 @@ msgstr ""
 "\n"
 "Recortado para %1x%2"
 
-#: src/lib/video_content.cc:444
+#: src/lib/video_content.cc:452
 #, fuzzy, c-format
 msgid ""
 "\n"
@@ -45,7 +45,7 @@ msgstr ""
 "\n"
 "Rácio do ecrã %.2f:1"
 
-#: src/lib/video_content.cc:474
+#: src/lib/video_content.cc:484
 #, fuzzy
 msgid ""
 "\n"
@@ -54,7 +54,7 @@ msgstr ""
 "\n"
 "Preenchido com negro para caber no contentor %1 (%2x%3)"
 
-#: src/lib/video_content.cc:464
+#: src/lib/video_content.cc:474
 #, fuzzy
 msgid ""
 "\n"
@@ -63,7 +63,7 @@ msgstr ""
 "\n"
 "Redimensionado para %1x%2"
 
-#: src/lib/video_content.cc:468 src/lib/video_content.cc:479
+#: src/lib/video_content.cc:478 src/lib/video_content.cc:489
 #, c-format
 msgid " (%.2f:1)"
 msgstr ""
@@ -100,7 +100,7 @@ msgstr ""
 msgid "%1 [Atmos]"
 msgstr "%1 [Atmos]"
 
-#: src/lib/dcp_content.cc:318
+#: src/lib/dcp_content.cc:320
 msgid "%1 [DCP]"
 msgstr "%1 [DCP]"
 
@@ -117,7 +117,7 @@ msgstr "%1 [movie]"
 msgid "%1 [video]"
 msgstr "%1 [movie]"
 
-#: src/lib/video_content.cc:439
+#: src/lib/video_content.cc:447
 #, fuzzy, c-format
 msgid ", pixel aspect ratio %.2f:1"
 msgstr ", rácio de pixeis %.2f:1"
@@ -168,7 +168,7 @@ msgstr ""
 msgid "3D denoiser"
 msgstr "Remoção de ruído 3D"
 
-#: src/lib/hints.cc:212
+#: src/lib/hints.cc:209
 msgid ""
 "4K 3D is only supported by a very limited number of projectors.  Unless you "
 "know that you will play this DCP back on a capable projector, it is "
@@ -200,13 +200,20 @@ msgid ""
 "Paypal to donate €10</a></ul><p>Thank you!"
 msgstr ""
 
-#: src/lib/hints.cc:169
+#: src/lib/hints.cc:166
 msgid ""
 "A few projectors have problems playing back very high bit-rate DCPs.  It is "
 "a good idea to drop the JPEG2000 bandwidth down to about 200Mbit/s; this is "
 "unlikely to have any visible effect on the image."
 msgstr ""
 
+#: src/lib/text_content.cc:248
+msgid ""
+"A subtitle or closed caption file in this project is marked with the "
+"language '%1', which DCP-o-matic does not recognise.  The file's language "
+"has been cleared."
+msgstr ""
+
 #: src/lib/ffmpeg_content.cc:635
 msgid "ARIB STD-B67 ('Hybrid log-gamma')"
 msgstr ""
@@ -215,7 +222,7 @@ msgstr ""
 msgid "Advertisement"
 msgstr "Publicidade"
 
-#: src/lib/hints.cc:146
+#: src/lib/hints.cc:143
 msgid ""
 "All of your content is in Scope (2.39:1) but your DCP's container is Flat "
 "(1.85:1).  This will letter-box your content inside a Flat (1.85:1) frame.  "
@@ -223,7 +230,7 @@ msgid ""
 "tab."
 msgstr ""
 
-#: src/lib/hints.cc:150
+#: src/lib/hints.cc:147
 msgid ""
 "All of your content narrower than 1.90:1 but your DCP's container is Scope "
 "(2.39:1).  This will pillar-box your content.  You may prefer to set your "
@@ -244,54 +251,54 @@ msgstr "Analizar áudio"
 msgid "Analysing subtitles"
 msgstr "À procura das legendas"
 
-#: src/lib/hints.cc:368
+#: src/lib/hints.cc:365
 msgid ""
 "At least one marker comes after the end of the project and will be ignored."
 msgstr ""
 
-#: src/lib/hints.cc:473
+#: src/lib/hints.cc:470
 msgid "At least one of your closed caption files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:466
+#: src/lib/hints.cc:463
 msgid "At least one of your closed caption files' XML part is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:481
+#: src/lib/hints.cc:478
 msgid "At least one of your subtitle files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:445
+#: src/lib/hints.cc:442
 msgid ""
 "At least one of your subtitle lines has more than 52 characters.  It is "
 "recommended to make each line 52 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:447
+#: src/lib/hints.cc:444
 msgid ""
 "At least one of your subtitle lines has more than 79 characters.  You should "
 "make each line 79 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:590
+#: src/lib/hints.cc:587
 msgid ""
 "At least one of your subtitles has more than 3 lines.  It is advisable to "
 "use no more than 3 lines."
 msgstr ""
 
-#: src/lib/hints.cc:580
+#: src/lib/hints.cc:577
 msgid ""
 "At least one of your subtitles lasts less than 15 frames.  It is advisable "
 "to make each subtitle at least 15 frames long."
 msgstr ""
 
-#: src/lib/hints.cc:585
+#: src/lib/hints.cc:582
 msgid ""
 "At least one of your subtitles starts less than 2 frames after the previous "
 "one.  It is advisable to make the gap between subtitles at least 2 frames."
 msgstr ""
 
-#: src/lib/hints.cc:633
+#: src/lib/hints.cc:630
 msgid ""
 "At least one piece of subtitle or closed caption content has no specified "
 "language.  It is advisable to set the language for each piece of subtitle or "
@@ -366,15 +373,15 @@ msgstr "Bits por pixel"
 msgid "Bob Weaver Deinterlacing Filter"
 msgstr "Yet Another Deinterlacing Filter"
 
-#: src/lib/util.cc:598
+#: src/lib/util.cc:601
 msgid "BsL"
 msgstr "BsL"
 
-#: src/lib/util.cc:599
+#: src/lib/util.cc:602
 msgid "BsR"
 msgstr "BsR"
 
-#: src/lib/util.cc:590
+#: src/lib/util.cc:593
 msgid "C"
 msgstr "C"
 
@@ -382,7 +389,7 @@ msgstr "C"
 msgid "Cancelled"
 msgstr "Cancelado"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 #, fuzzy
 msgid "Cannot contain slashes"
 msgstr "não pode conter barras"
@@ -391,11 +398,11 @@ msgstr "não pode conter barras"
 msgid "Cannot handle pixel format %1 during %2"
 msgstr "Impossível manusear o formato de pixeis %1 durante %2"
 
-#: src/lib/film.cc:1662
+#: src/lib/film.cc:1711
 msgid "Cannot make a KDM as this project is not encrypted."
 msgstr ""
 
-#: src/lib/util.cc:559
+#: src/lib/util.cc:562
 msgid "Centre"
 msgstr "Central"
 
@@ -466,7 +473,7 @@ msgstr ""
 msgid "Computing digest"
 msgstr "A processar o resumo"
 
-#: src/lib/writer.cc:535
+#: src/lib/writer.cc:531
 #, fuzzy
 msgid "Computing digests"
 msgstr "A processar o resumo"
@@ -499,23 +506,23 @@ msgstr "O conteúdo a ser unido deve ter a mesma escala X nas legendas."
 msgid "Content to be joined must all have or not have video"
 msgstr "O conteúdo a ser unido deve ter os mesmos fades."
 
-#: src/lib/text_content.cc:305
+#: src/lib/text_content.cc:320
 #, fuzzy
 msgid ""
 "Content to be joined must both be main subtitle languages or both additional."
 msgstr "O conteúdo a ser unido deve ter a mesma escala X nas legendas."
 
-#: src/lib/video_content.cc:207
+#: src/lib/video_content.cc:210
 #, fuzzy
 msgid "Content to be joined must have all its video used or not used."
 msgstr "O conteúdo a ser unido deve ter a mesma cadência de fotogramas."
 
-#: src/lib/text_content.cc:260
+#: src/lib/text_content.cc:275
 msgid "Content to be joined must have the same 'burn subtitles' setting."
 msgstr ""
 "O conteúdo a ser unido deve ter a mesma configuração 'gravar legendas'."
 
-#: src/lib/text_content.cc:256
+#: src/lib/text_content.cc:271
 msgid "Content to be joined must have the same 'use subtitles' setting."
 msgstr "O conteúdo a ser unido deve ter a mesma configuração 'usar legendas'."
 
@@ -527,67 +534,67 @@ msgstr "O conteúdo a ser unido deve ter o mesmo atraso de áudio."
 msgid "Content to be joined must have the same audio gain."
 msgstr "O conteúdo a ser unido deve ter o mesmo ganho de áudio."
 
-#: src/lib/video_content.cc:239
+#: src/lib/video_content.cc:242
 #, fuzzy
 msgid "Content to be joined must have the same burnt subtitle language."
 msgstr ""
 "O conteúdo a ser unido deve ter a mesma configuração 'gravar legendas'."
 
-#: src/lib/video_content.cc:231
+#: src/lib/video_content.cc:234
 msgid "Content to be joined must have the same colour conversion."
 msgstr "O conteúdo a ser unido deve ter a mesma conversão de cor."
 
-#: src/lib/video_content.cc:219
+#: src/lib/video_content.cc:222
 msgid "Content to be joined must have the same crop."
 msgstr "O conteúdo a ser unido deve ter o mesmo recorte."
 
-#: src/lib/video_content.cc:223
+#: src/lib/video_content.cc:226
 #, fuzzy
 msgid "Content to be joined must have the same custom ratio setting."
 msgstr ""
 "O conteúdo a ser unido deve ter as mesmas definições de redimensionamento."
 
-#: src/lib/video_content.cc:227
+#: src/lib/video_content.cc:230
 #, fuzzy
 msgid "Content to be joined must have the same custom size setting."
 msgstr ""
 "O conteúdo a ser unido deve ter as mesmas definições de redimensionamento."
 
-#: src/lib/video_content.cc:235
+#: src/lib/video_content.cc:238
 msgid "Content to be joined must have the same fades."
 msgstr "O conteúdo a ser unido deve ter os mesmos fades."
 
-#: src/lib/text_content.cc:288
+#: src/lib/text_content.cc:303
 #, fuzzy
 msgid "Content to be joined must have the same outline width."
 msgstr "O conteúdo a ser unido deve ter a mesma escala X nas legendas."
 
-#: src/lib/video_content.cc:211
+#: src/lib/video_content.cc:214
 msgid "Content to be joined must have the same picture size."
 msgstr "O conteúdo a ser unido deve ter o mesmo tamanho de imagem."
 
-#: src/lib/text_content.cc:264
+#: src/lib/text_content.cc:279
 msgid "Content to be joined must have the same subtitle X offset."
 msgstr "O conteúdo a ser unido deve ter o mesmo alinhamento X nas legendas."
 
-#: src/lib/text_content.cc:272
+#: src/lib/text_content.cc:287
 msgid "Content to be joined must have the same subtitle X scale."
 msgstr "O conteúdo a ser unido deve ter a mesma escala X nas legendas."
 
-#: src/lib/text_content.cc:268
+#: src/lib/text_content.cc:283
 msgid "Content to be joined must have the same subtitle Y offset."
 msgstr "O conteúdo a ser unido deve ter o mesmo alinhamento Y nas legendas."
 
-#: src/lib/text_content.cc:276
+#: src/lib/text_content.cc:291
 msgid "Content to be joined must have the same subtitle Y scale."
 msgstr "O conteúdo a ser unido deve ter a mesma escala Y nas legendas."
 
-#: src/lib/text_content.cc:284
+#: src/lib/text_content.cc:299
 #, fuzzy
 msgid "Content to be joined must have the same subtitle fades."
 msgstr "O conteúdo a ser unido deve ter a mesma escala X nas legendas."
 
-#: src/lib/text_content.cc:280
+#: src/lib/text_content.cc:295
 #, fuzzy
 msgid "Content to be joined must have the same subtitle line spacing."
 msgstr "O conteúdo a ser unido deve ter a mesma escala X nas legendas."
@@ -597,16 +604,16 @@ msgstr "O conteúdo a ser unido deve ter a mesma escala X nas legendas."
 msgid "Content to be joined must have the same video frame rate"
 msgstr "O conteúdo a ser unido deve ter a mesma cadência de fotogramas."
 
-#: src/lib/video_content.cc:215
+#: src/lib/video_content.cc:218
 msgid "Content to be joined must have the same video frame type."
 msgstr "O conteúdo a ser unido deve ter o mesmo tipo de fotogramas de vídeo."
 
-#: src/lib/text_content.cc:297
+#: src/lib/text_content.cc:312
 #, fuzzy
 msgid "Content to be joined must use the same DCP track."
 msgstr "O conteúdo a ser unido deve usar os mesmos tipos de letra."
 
-#: src/lib/text_content.cc:293 src/lib/text_content.cc:313
+#: src/lib/text_content.cc:308 src/lib/text_content.cc:328
 msgid "Content to be joined must use the same fonts."
 msgstr "O conteúdo a ser unido deve usar os mesmos tipos de letra."
 
@@ -614,12 +621,12 @@ msgstr "O conteúdo a ser unido deve usar os mesmos tipos de letra."
 msgid "Content to be joined must use the same subtitle stream."
 msgstr "O conteúdo a ser unido deve usar o mesmo fluxo de legendas."
 
-#: src/lib/text_content.cc:301
+#: src/lib/text_content.cc:316
 #, fuzzy
 msgid "Content to be joined must use the same text language."
 msgstr "O conteúdo a ser unido deve usar os mesmos tipos de letra."
 
-#: src/lib/video_content.cc:430
+#: src/lib/video_content.cc:438
 msgid "Content video is %1x%2"
 msgstr "O vídeo do conteúdo tem %1x%2"
 
@@ -644,7 +651,7 @@ msgstr "Não foi possivel ligar ao servidor %1 (%2)"
 msgid "Could not create remote directory %1 (%2)"
 msgstr "Não foi possível criar o directório remoto %1 (%2)"
 
-#: src/lib/image_examiner.cc:65
+#: src/lib/image_examiner.cc:64
 msgid "Could not decode JPEG2000 file %1 (%2)"
 msgstr "Não foi possível descodificar o ficheiro JPEG2000 %1 (%2)"
 
@@ -683,7 +690,7 @@ msgstr "Não foi possível abrir o ficheiro ZIP descarregado"
 msgid "Could not open file for writing"
 msgstr "não foi possível abrir o ficheiro para leitura"
 
-#: src/lib/ffmpeg_file_encoder.cc:269
+#: src/lib/ffmpeg_file_encoder.cc:265
 #, fuzzy
 msgid "Could not open output file %1 (%2)"
 msgstr "não foi possível escrever para o ficheiro %1 (%2)"
@@ -701,19 +708,19 @@ msgstr "Não foi possível iniciar a transferência"
 msgid "Could not write to remote file (%1)"
 msgstr "Não foi possível escrever para o ficheiro remoto (%1)"
 
-#: src/lib/util.cc:569
+#: src/lib/util.cc:572
 msgid "D-BOX primary"
 msgstr "D-BOX primário"
 
-#: src/lib/util.cc:570
+#: src/lib/util.cc:573
 msgid "D-BOX secondary"
 msgstr "D-BOX secundário"
 
-#: src/lib/util.cc:600
+#: src/lib/util.cc:603
 msgid "DBP"
 msgstr "DBP"
 
-#: src/lib/util.cc:601
+#: src/lib/util.cc:604
 msgid "DBS"
 msgstr "DBS"
 
@@ -727,7 +734,7 @@ msgstr "Flat"
 msgid "DCI Scope"
 msgstr "Scope"
 
-#: src/lib/dcp_subtitle_content.cc:103
+#: src/lib/dcp_subtitle_content.cc:104
 msgid "DCP XML subtitles"
 msgstr "Legendas XML DCP"
 
@@ -754,13 +761,13 @@ msgstr ""
 "O DCP-o-matic não conseguiu abrir o ficheiro %1. Talvez não exista ou está "
 "num formato inesperado."
 
-#: src/lib/film.cc:1565
+#: src/lib/film.cc:1614
 msgid ""
 "DCP-o-matic had to change your settings for referring to DCPs as OV.  Please "
 "review those settings to make sure they are what you want."
 msgstr ""
 
-#: src/lib/film.cc:1533
+#: src/lib/film.cc:1582
 msgid ""
 "DCP-o-matic had to change your settings so that the film's frame rate is the "
 "same as that of your Atmos content."
@@ -771,7 +778,7 @@ msgid ""
 "DCP-o-matic no longer supports the `%1' filter, so it has been turned off."
 msgstr "O DCP-o-matic já não suporta o filtro '%1', e este foi desactivado."
 
-#: src/lib/config.cc:359 src/lib/config.cc:1114
+#: src/lib/config.cc:357 src/lib/config.cc:1114
 msgid "DCP-o-matic notification"
 msgstr ""
 
@@ -865,7 +872,7 @@ msgstr "Erro no ficheiro de legendas: encontrou %1 mas esperava %2"
 msgid "Error: %1"
 msgstr "Erro: %1"
 
-#: src/lib/hints.cc:408
+#: src/lib/hints.cc:405
 #, fuzzy
 msgid "Examining audio, subtitles and closed captions"
 msgstr "Examen du contenu"
@@ -880,7 +887,7 @@ msgstr "Examinar conteúdo"
 msgid "Examining subtitles"
 msgstr "À procura das legendas"
 
-#: src/lib/hints.cc:406
+#: src/lib/hints.cc:403
 #, fuzzy
 msgid "Examining subtitles and closed captions"
 msgstr "Examen du contenu"
@@ -912,7 +919,7 @@ msgstr "Falha no envio de email (%1)"
 msgid "Feature"
 msgstr "Longa-metragem"
 
-#: src/lib/content.cc:464
+#: src/lib/content.cc:468
 #, fuzzy
 msgid "Filename"
 msgstr "nome"
@@ -925,11 +932,11 @@ msgstr "Filme"
 msgid "Finding length"
 msgstr "À procura da duração"
 
-#: src/lib/content.cc:471
+#: src/lib/content.cc:475
 msgid "Frame rate"
 msgstr "Cadência de fotogramas"
 
-#: src/lib/util.cc:943
+#: src/lib/util.cc:946
 msgid "Friday"
 msgstr "Sexta-feira"
 
@@ -975,11 +982,11 @@ msgstr "Gama 28 (BT470BG)"
 msgid "Gradient debander"
 msgstr "Alterar banda do gradiente"
 
-#: src/lib/util.cc:594
+#: src/lib/util.cc:597
 msgid "HI"
 msgstr "DA"
 
-#: src/lib/util.cc:563
+#: src/lib/util.cc:566
 msgid "Hearing impaired"
 msgstr "Deficientes auditivos"
 
@@ -1004,18 +1011,18 @@ msgstr "IEC61966-2-1 (sRGB ou sYCC)"
 msgid "IEC61966-2-4"
 msgstr "IEC61966-2-4"
 
-#: src/lib/hints.cc:188
+#: src/lib/hints.cc:185
 msgid "If you do use 25fps you should change your DCP standard to SMPTE."
 msgstr ""
 
-#: src/lib/hints.cc:251
+#: src/lib/hints.cc:248
 msgid ""
 "In general it is now advisable to make SMPTE DCPs unless you have a "
 "particular reason to use Interop.  You are advised to set your DCP to use "
 "the SMPTE standard in the \"DCP\" tab."
 msgstr ""
 
-#: src/lib/hints.cc:573
+#: src/lib/hints.cc:570
 msgid ""
 "It is advisable to put your first subtitle at least 4 seconds after the "
 "start of the DCP to make sure it is seen."
@@ -1029,7 +1036,7 @@ msgstr "A causa do erro não é conhecida."
 msgid "JEDEC P22"
 msgstr ""
 
-#: src/lib/config.cc:349 src/lib/config.cc:1099
+#: src/lib/config.cc:347 src/lib/config.cc:1099
 msgid "KDM delivery: $CPL_NAME"
 msgstr "Envio de chaves KDM: $CPL_NAME"
 
@@ -1037,39 +1044,39 @@ msgstr "Envio de chaves KDM: $CPL_NAME"
 msgid "Kernel deinterlacer"
 msgstr "Desentrelaçador do núcleo"
 
-#: src/lib/ffmpeg_encoder.cc:251 src/lib/util.cc:588
+#: src/lib/ffmpeg_encoder.cc:253 src/lib/util.cc:591
 msgid "L"
 msgstr "E"
 
-#: src/lib/util.cc:596
+#: src/lib/util.cc:599
 msgid "Lc"
 msgstr "Ec"
 
-#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:557
+#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:560
 msgid "Left"
 msgstr "Esquerdo"
 
-#: src/lib/util.cc:565
+#: src/lib/util.cc:568
 msgid "Left centre"
 msgstr "Esquerdo central"
 
-#: src/lib/util.cc:567
+#: src/lib/util.cc:570
 msgid "Left rear surround"
 msgstr "Esquerdo traseiro surround"
 
-#: src/lib/util.cc:561
+#: src/lib/util.cc:564
 msgid "Left surround"
 msgstr "Esquerdo surround"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "Length"
 msgstr "Duração"
 
-#: src/lib/util.cc:591
+#: src/lib/util.cc:594
 msgid "Lfe"
 msgstr "Lfe"
 
-#: src/lib/util.cc:560
+#: src/lib/util.cc:563
 msgid "Lfe (sub)"
 msgstr "Lfe (sub)"
 
@@ -1093,11 +1100,11 @@ msgstr "Logarítmico (variação 100:1)"
 msgid "Logarithmic (316:1 range)"
 msgstr "Logarítmico (Variação 316:1)"
 
-#: src/lib/exceptions.cc:145
+#: src/lib/exceptions.cc:152
 msgid "Lost communication between main and writer processes"
 msgstr ""
 
-#: src/lib/util.cc:592
+#: src/lib/util.cc:595
 msgid "Ls"
 msgstr "Es"
 
@@ -1109,19 +1116,19 @@ msgstr "Descodificador Mid-side"
 msgid "Misc"
 msgstr "Misc"
 
-#: src/lib/dcp_examiner.cc:164
+#: src/lib/dcp_examiner.cc:175
 msgid "Mismatched audio channel counts in DCP"
 msgstr "Canais de áudio do DCP em número inválido"
 
-#: src/lib/dcp_examiner.cc:170
+#: src/lib/dcp_examiner.cc:181
 msgid "Mismatched audio sample rates in DCP"
 msgstr "Taxa de amostragem de áudio do DCP inválida"
 
-#: src/lib/dcp_examiner.cc:137
+#: src/lib/dcp_examiner.cc:145
 msgid "Mismatched frame rates in DCP"
 msgstr "Cadência de fotogramas do DCP inválida"
 
-#: src/lib/dcp_examiner.cc:145
+#: src/lib/dcp_examiner.cc:153
 msgid "Mismatched video sizes in DCP"
 msgstr "Dimensões de vídeo do DCP inválidas"
 
@@ -1130,11 +1137,11 @@ msgstr "Dimensões de vídeo do DCP inválidas"
 msgid "Missing required setting %1"
 msgstr "falta definição necessária %1"
 
-#: src/lib/util.cc:935
+#: src/lib/util.cc:938
 msgid "Monday"
 msgstr "Segunda-feira"
 
-#: src/lib/writer.cc:763
+#: src/lib/writer.cc:759
 msgid "Mono"
 msgstr ""
 
@@ -1158,7 +1165,7 @@ msgstr "Não foram encontrados ficheiros de imagem válidos na pasta."
 msgid "Noise reduction"
 msgstr "Redução de ruído"
 
-#: src/lib/writer.cc:731 src/lib/writer.cc:738 src/lib/writer.cc:761
+#: src/lib/writer.cc:727 src/lib/writer.cc:734 src/lib/writer.cc:757
 msgid "None"
 msgstr ""
 
@@ -1196,7 +1203,7 @@ msgstr "Redutor de ruído de onda"
 msgid "P3"
 msgstr "P3"
 
-#: src/lib/util.h:59
+#: src/lib/util.h:64
 msgid ""
 "Please report this problem by using Help -> Report a problem or via email to "
 "carl@dcpomatic.com"
@@ -1206,7 +1213,7 @@ msgstr ""
 msgid "Policy"
 msgstr "Regra"
 
-#: src/lib/content.cc:480
+#: src/lib/content.cc:484
 msgid "Prepared for video frame rate"
 msgstr ""
 
@@ -1223,7 +1230,7 @@ msgstr ""
 msgid "Public Service Announcement"
 msgstr "Anúncio Público"
 
-#: src/lib/ffmpeg_encoder.cc:256 src/lib/util.cc:589
+#: src/lib/ffmpeg_encoder.cc:258 src/lib/util.cc:592
 msgid "R"
 msgstr "D"
 
@@ -1235,7 +1242,7 @@ msgstr "RGB / sRGB (IEC61966-2-1)"
 msgid "Rating"
 msgstr "Classificação"
 
-#: src/lib/util.cc:597
+#: src/lib/util.cc:600
 msgid "Rc"
 msgstr "Dc"
 
@@ -1257,19 +1264,19 @@ msgstr "Rec. 601"
 msgid "Rec. 709"
 msgstr "Rec. 709"
 
-#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:558
+#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:561
 msgid "Right"
 msgstr "Direito"
 
-#: src/lib/util.cc:566
+#: src/lib/util.cc:569
 msgid "Right centre"
 msgstr "Direita central"
 
-#: src/lib/util.cc:568
+#: src/lib/util.cc:571
 msgid "Right rear surround"
 msgstr "Direito traseiro surround"
 
-#: src/lib/util.cc:562
+#: src/lib/util.cc:565
 msgid "Right surround"
 msgstr "Direito surround"
 
@@ -1281,7 +1288,7 @@ msgstr ""
 msgid "Rotate 90 degrees clockwise"
 msgstr ""
 
-#: src/lib/util.cc:593
+#: src/lib/util.cc:596
 msgid "Rs"
 msgstr "Ds"
 
@@ -1306,7 +1313,7 @@ msgstr ""
 msgid "SMPTE 240M"
 msgstr "SMPTE 240M"
 
-#: src/lib/hints.cc:615
+#: src/lib/hints.cc:612
 msgid ""
 "SMPTE DCPs with the type FTR (feature) should have markers for the first "
 "frame of end credits (FFEC) and the first frame of moving credits (FFMC).  "
@@ -1345,7 +1352,7 @@ msgstr "Erro de SSH (%1)"
 msgid "SSH error [%1] (%2)"
 msgstr "Erro de SSH (%1)"
 
-#: src/lib/util.cc:945
+#: src/lib/util.cc:948
 msgid "Saturday"
 msgstr "Sábado"
 
@@ -1362,11 +1369,11 @@ msgstr "A enviar email"
 msgid "Short"
 msgstr "Curta-metragem"
 
-#: src/lib/util.cc:602
+#: src/lib/util.cc:605
 msgid "Sign"
 msgstr ""
 
-#: src/lib/video_content.cc:500
+#: src/lib/video_content.cc:510
 msgid "Size"
 msgstr "Tamanho"
 
@@ -1387,28 +1394,28 @@ msgid ""
 "project in DCP-o-matic, check the settings, then save it before trying again."
 msgstr ""
 
-#: src/lib/hints.cc:554
+#: src/lib/hints.cc:551
 msgid ""
 "Some of your closed captions span more than %1 lines, so they will be "
 "truncated."
 msgstr ""
 
-#: src/lib/hints.cc:653
+#: src/lib/hints.cc:650
 msgid ""
 "Some of your content has audio but you have not set the audio language.  It "
 "is advisable to set the audio language in the \"DCP\" tab unless your audio "
 "has no spoken parts."
 msgstr ""
 
-#: src/lib/film.cc:406
+#: src/lib/film.cc:417
 msgid "Some of your content needs a KDM"
 msgstr ""
 
-#: src/lib/film.cc:409
+#: src/lib/film.cc:420
 msgid "Some of your content needs an OV"
 msgstr ""
 
-#: src/lib/writer.cc:765
+#: src/lib/writer.cc:761
 msgid "Stereo"
 msgstr ""
 
@@ -1420,7 +1427,7 @@ msgstr "Multiplicador de canais de Stereo para 5.1 A"
 msgid "Stereo to 5.1 up-mixer B"
 msgstr "Multiplicador de canais de Stereo para 5.1 B"
 
-#: src/lib/util.cc:933
+#: src/lib/util.cc:936
 msgid "Sunday"
 msgstr "Domingo"
 
@@ -1440,7 +1447,7 @@ msgstr "Teste"
 msgid "Text subtitles"
 msgstr "Legendas de texto"
 
-#: src/lib/film.cc:389
+#: src/lib/film.cc:400
 msgid "The DCP is empty, perhaps because all the content has zero length."
 msgstr ""
 
@@ -1453,7 +1460,7 @@ msgstr "A cadeia de certificação para assinatura é inválida"
 msgid "The certificate chain for signing is invalid (%1)"
 msgstr "A cadeia de certificação para assinatura é inválida"
 
-#: src/lib/video_decoder.cc:86
+#: src/lib/video_decoder.cc:81
 msgid ""
 "The content file %1 is set as 3D but does not appear to contain 3D images.  "
 "Please set it to 2D.  You can still make a 3D DCP from this content by "
@@ -1484,7 +1491,7 @@ msgstr ""
 msgid "The file %1 has been trimmed by %2 milliseconds more."
 msgstr ""
 
-#: src/lib/hints.cc:241
+#: src/lib/hints.cc:238
 msgid ""
 "There is a large difference between the frame rate of your DCP and that of "
 "some of your content.  This will cause your audio to play back at a much "
@@ -1493,7 +1500,7 @@ msgid ""
 "systems support your chosen DCP rate."
 msgstr ""
 
-#: src/lib/dcp_content.cc:657
+#: src/lib/dcp_content.cc:659
 msgid "There is no video in this DCP"
 msgstr ""
 
@@ -1507,11 +1514,11 @@ msgstr ""
 "sistema de 32-bit tente reduzir o número de linhas de execução na aba Geral "
 "das Preferências."
 
-#: src/lib/util.cc:1146
+#: src/lib/util.cc:1150
 msgid "This KDM was made for DCP-o-matic but not for its leaf certificate."
 msgstr ""
 
-#: src/lib/util.cc:1144
+#: src/lib/util.cc:1148
 msgid "This KDM was not made for DCP-o-matic's decryption certificate."
 msgstr ""
 
@@ -1536,7 +1543,7 @@ msgid ""
 "the content and choosing \"Add KDM\"."
 msgstr ""
 
-#: src/lib/film.cc:581
+#: src/lib/film.cc:595
 msgid ""
 "This film was created with a newer version of DCP-o-matic, and it cannot be "
 "loaded into this version.  Sorry!"
@@ -1544,7 +1551,7 @@ msgstr ""
 "Este filme foi criado com uma versão mais recente do DCP-o-matic, e não pode "
 "ser carregado nesta. Desculpe!"
 
-#: src/lib/film.cc:566
+#: src/lib/film.cc:580
 msgid ""
 "This film was created with an older version of DCP-o-matic, and "
 "unfortunately it cannot be loaded into this version.  You will need to "
@@ -1554,7 +1561,7 @@ msgstr ""
 "não pode ser carregado nesta. Necessita criar um novo Filme, voltar a "
 "adicionar o conteúdo e configurá-lo de novo. Desculpe!"
 
-#: src/lib/util.cc:941
+#: src/lib/util.cc:944
 msgid "Thursday"
 msgstr "Quinta-feira"
 
@@ -1575,7 +1582,7 @@ msgstr "Transcodificar %1"
 msgid "Transitional"
 msgstr "Transitório"
 
-#: src/lib/util.cc:937
+#: src/lib/util.cc:940
 msgid "Tuesday"
 msgstr "Terça-feira"
 
@@ -1600,7 +1607,7 @@ msgstr "desconhecido"
 msgid "Unknown error"
 msgstr "Erro desconhecido"
 
-#: src/lib/ffmpeg_decoder.cc:343
+#: src/lib/ffmpeg_decoder.cc:339
 msgid "Unrecognised audio sample format (%1)"
 msgstr "Formato de amostragem áudio desconhecido (%1)"
 
@@ -1620,7 +1627,7 @@ msgstr "Não especificado"
 msgid "Untitled"
 msgstr "Sem título"
 
-#: src/lib/util.cc:571 src/lib/util.cc:572
+#: src/lib/util.cc:574 src/lib/util.cc:575
 msgid "Unused"
 msgstr "Não utilizado"
 
@@ -1632,7 +1639,7 @@ msgstr "Combinar E"
 msgid "Upmix R"
 msgstr "Combinar D"
 
-#: src/lib/util.cc:595
+#: src/lib/util.cc:598
 msgid "VI"
 msgstr "DV"
 
@@ -1644,7 +1651,7 @@ msgstr ""
 msgid "Vertical flip"
 msgstr ""
 
-#: src/lib/util.cc:564
+#: src/lib/util.cc:567
 msgid "Visually impaired"
 msgstr "Deficientes Visuais"
 
@@ -1657,7 +1664,7 @@ msgstr "A aguardar"
 msgid "Weave filter"
 msgstr "Filtro de telecinema"
 
-#: src/lib/util.cc:939
+#: src/lib/util.cc:942
 msgid "Wednesday"
 msgstr "Quarta-feira"
 
@@ -1670,69 +1677,69 @@ msgstr "YCOCG"
 msgid "Yet Another Deinterlacing Filter"
 msgstr "Yet Another Deinterlacing Filter"
 
-#: src/lib/hints.cc:201
+#: src/lib/hints.cc:198
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You are advised to change the DCP frame rate "
 "to %2 fps."
 msgstr ""
 
-#: src/lib/hints.cc:185
+#: src/lib/hints.cc:182
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You may want to consider changing your frame "
 "rate to %2 fps."
 msgstr ""
 
-#: src/lib/hints.cc:195
+#: src/lib/hints.cc:192
 msgid ""
 "You are set up for a DCP frame rate of 30fps, which is not supported by all "
 "projectors.  Be aware that you may have compatibility problems."
 msgstr ""
 
-#: src/lib/hints.cc:306
+#: src/lib/hints.cc:303
 msgid ""
 "You are using 3D content but your DCP is set to 2D.  Set the DCP to 3D if "
 "you want to play it back on a 3D system (e.g. Real-D, MasterImage etc.)"
 msgstr ""
 
-#: src/lib/hints.cc:122
+#: src/lib/hints.cc:119
 msgid ""
 "You are using DCP-o-matic's stereo-to-5.1 upmixer.  This is experimental and "
 "may result in poor-quality audio.  If you continue, you should listen to the "
 "resulting DCP in a cinema to make sure that it sounds good."
 msgstr ""
 
-#: src/lib/hints.cc:290
+#: src/lib/hints.cc:287
 msgid ""
 "You have %1 files that look like they are VOB files from DVD. You should "
 "join them to ensure smooth joins between the files."
 msgstr ""
 
-#: src/lib/film.cc:1529
+#: src/lib/film.cc:1578
 msgid ""
 "You have more than one piece of Atmos content, and they do not have the same "
 "frame rate.  You must remove some Atmos content."
 msgstr ""
 
-#: src/lib/hints.cc:561
+#: src/lib/hints.cc:558
 msgid ""
 "You have overlapping closed captions, which are not allowed in Interop "
 "DCPs.  Change your DCP standard to SMPTE."
 msgstr ""
 
-#: src/lib/hints.cc:274
+#: src/lib/hints.cc:271
 msgid ""
 "You have specified a font file which is larger than 640kB.  This is very "
 "likely to cause problems on playback."
 msgstr ""
 
-#: src/lib/film.cc:385
+#: src/lib/film.cc:396
 #, fuzzy
 msgid "You must add some content to the DCP before creating it"
 msgstr "Deve adicionar algum conteúdo ao DCP antes de o criar"
 
-#: src/lib/hints.cc:112
+#: src/lib/hints.cc:109
 msgid ""
 "Your DCP has fewer than 6 audio channels.  This may cause problems on some "
 "projectors.  You may want to set the DCP to have 6 channels.  It does not "
@@ -1740,19 +1747,19 @@ msgid ""
 "extras with silence."
 msgstr ""
 
-#: src/lib/hints.cc:160
+#: src/lib/hints.cc:157
 msgid ""
 "Your DCP uses an unusual container ratio.  This may cause problems on some "
 "projectors.  If possible, use Flat or Scope for the DCP container ratio."
 msgstr ""
 
-#: src/lib/hints.cc:340
+#: src/lib/hints.cc:337
 msgid ""
 "Your audio level is very high (on %1).  You should reduce the gain of your "
 "audio content."
 msgstr ""
 
-#: src/lib/config.cc:289
+#: src/lib/config.cc:287
 msgid ""
 "Your default container is not valid and has been changed to Flat (1.85:1)"
 msgstr ""
@@ -1776,7 +1783,7 @@ msgstr "[moving images]"
 msgid "[still]"
 msgstr "[still]"
 
-#: src/lib/dcp_subtitle_content.cc:97 src/lib/string_text_file_content.cc:78
+#: src/lib/dcp_subtitle_content.cc:98 src/lib/string_text_file_content.cc:78
 msgid "[subtitles]"
 msgstr "[subtitles]"
 
@@ -1794,11 +1801,11 @@ msgstr "Ligação expirou"
 msgid "connecting"
 msgstr "A ligar"
 
-#: src/lib/film.cc:381
+#: src/lib/film.cc:392
 msgid "container"
 msgstr "contentor"
 
-#: src/lib/film.cc:393
+#: src/lib/film.cc:404
 msgid "content type"
 msgstr "tipo de conteúdo"
 
@@ -1854,84 +1861,84 @@ msgstr "erro durante leitura assíncrona (%1)"
 msgid "error during async_write (%1)"
 msgstr "erro durante escrita assíncrona (%1)"
 
-#: src/lib/content.cc:473 src/lib/content.cc:482
+#: src/lib/content.cc:477 src/lib/content.cc:486
 msgid "frames per second"
 msgstr "fotogramas por segundo"
 
 #. / TRANSLATORS: h here is an abbreviation for hours
-#: src/lib/util.cc:200
+#: src/lib/util.cc:203
 msgid "h"
 msgstr "h"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:750
+#: src/lib/dcp_content.cc:752
 #, fuzzy
 msgid "it does not have closed captions in all its reels."
 msgstr "Não há nenhuma bobina de audio no DCP"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:739
+#: src/lib/dcp_content.cc:741
 #, fuzzy
 msgid "it does not have open subtitles in all its reels."
 msgstr "Não há nenhuma bobina de legendas no DCP"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:706
+#: src/lib/dcp_content.cc:708
 #, fuzzy
 msgid "it does not have sound in all its reels."
 msgstr "Não há nenhuma bobina de audio no DCP"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:610
+#: src/lib/dcp_content.cc:612
 msgid "it has a different frame rate to the film."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:765
+#: src/lib/dcp_content.cc:767
 msgid ""
 "it has a start trim so its subtitles or closed captions must be re-written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:667
+#: src/lib/dcp_content.cc:669
 msgid "it is 2K and the film is 4K."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:664
+#: src/lib/dcp_content.cc:666
 msgid "it is 4K and the film is 2K."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:598
+#: src/lib/dcp_content.cc:600
 msgid "it is Interop and the film is set to SMPTE."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:602
+#: src/lib/dcp_content.cc:604
 msgid "it is SMPTE and the film is set to Interop."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:712
+#: src/lib/dcp_content.cc:714
 #, fuzzy
 msgid "it overlaps other audio content; remove the other content."
 msgstr "Existe outro conteúdo áudio sobreposto a este DCP; remova-o."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:770
+#: src/lib/dcp_content.cc:772
 #, fuzzy
 msgid "it overlaps other text content; remove the other content."
 msgstr "Existe outro conteúdo video sobreposto a este DCP; remova-o."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:677
+#: src/lib/dcp_content.cc:679
 #, fuzzy
 msgid "it overlaps other video content; remove the other content."
 msgstr "Existe outro conteúdo video sobreposto a este DCP; remova-o."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:633
+#: src/lib/dcp_content.cc:635
 #, fuzzy
 msgid ""
 "its reel lengths differ from those in the film; set the reel mode to 'split "
@@ -1941,12 +1948,12 @@ msgstr ""
 "'Bobinas' para 'Dividir por conteúdo de vídeo'."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:672
+#: src/lib/dcp_content.cc:674
 msgid "its video frame size differs from the film's."
 msgstr ""
 
 #. / TRANSLATORS: m here is an abbreviation for minutes
-#: src/lib/util.cc:209
+#: src/lib/util.cc:212
 msgid "m"
 msgstr "m"
 
@@ -1954,26 +1961,26 @@ msgstr "m"
 msgid "moving"
 msgstr "a mover"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "name"
 msgstr "nome"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:756
+#: src/lib/dcp_content.cc:758
 msgid ""
 "one of its closed caption has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:743
+#: src/lib/dcp_content.cc:745
 msgid ""
 "one of its subtitle reels has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: s here is an abbreviation for seconds
-#: src/lib/util.cc:219
+#: src/lib/util.cc:222
 msgid "s"
 msgstr "s"
 
@@ -1981,7 +1988,7 @@ msgstr "s"
 msgid "sRGB"
 msgstr "sRGB"
 
-#: src/lib/film.cc:402
+#: src/lib/film.cc:413
 msgid "some of your content is missing"
 msgstr ""
 
@@ -1993,7 +2000,7 @@ msgstr "imagem estática"
 msgid "unknown"
 msgstr "desconhecido"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "video frames"
 msgstr "fotogramas de vídeo"
 
diff --git a/src/lib/po/ru_RU.po b/src/lib/po/ru_RU.po
index 916677e6b..eb3303e42 100644
--- a/src/lib/po/ru_RU.po
+++ b/src/lib/po/ru_RU.po
@@ -3,7 +3,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-08-20 23:10+0200\n"
+"POT-Creation-Date: 2021-10-17 15:26+0200\n"
 "PO-Revision-Date: 2019-03-27 00:34+0200\n"
 "Last-Translator: Igor Voytovich <i.voyt@dualvfilms.com>\n"
 "Language-Team: Russian\n"
@@ -15,7 +15,7 @@ msgstr ""
 "Plural-Forms: nplurals=3; plural=(n%10==1 && n%100!=11 ? 0 : n%10>=2 && n"
 "%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2);\n"
 
-#: src/lib/video_content.cc:486
+#: src/lib/video_content.cc:496
 #, c-format
 msgid ""
 "\n"
@@ -24,7 +24,7 @@ msgstr ""
 "\n"
 "Частота кадров контента: %.4f\n"
 
-#: src/lib/video_content.cc:451
+#: src/lib/video_content.cc:461
 msgid ""
 "\n"
 "Cropped to %1x%2"
@@ -32,7 +32,7 @@ msgstr ""
 "\n"
 "Размер при кадрировании: %1x%2"
 
-#: src/lib/video_content.cc:444
+#: src/lib/video_content.cc:452
 #, c-format
 msgid ""
 "\n"
@@ -41,7 +41,7 @@ msgstr ""
 "\n"
 "Соотношение сторон %.2f:1"
 
-#: src/lib/video_content.cc:474
+#: src/lib/video_content.cc:484
 msgid ""
 "\n"
 "Padded with black to fit container %1 (%2x%3)"
@@ -49,7 +49,7 @@ msgstr ""
 "\n"
 "Заполнено черным для подгонки контейнера %1 (%2x%3)"
 
-#: src/lib/video_content.cc:464
+#: src/lib/video_content.cc:474
 msgid ""
 "\n"
 "Scaled to %1x%2"
@@ -57,7 +57,7 @@ msgstr ""
 "\n"
 "Размер при масштабировании: %1x%2"
 
-#: src/lib/video_content.cc:468 src/lib/video_content.cc:479
+#: src/lib/video_content.cc:478 src/lib/video_content.cc:489
 #, c-format
 msgid " (%.2f:1)"
 msgstr " (%.2f:1)"
@@ -102,7 +102,7 @@ msgstr ""
 msgid "%1 [Atmos]"
 msgstr "%1 [Atmos]"
 
-#: src/lib/dcp_content.cc:318
+#: src/lib/dcp_content.cc:320
 msgid "%1 [DCP]"
 msgstr "%1 [DCP]"
 
@@ -118,7 +118,7 @@ msgstr "%1 [видео]"
 msgid "%1 [video]"
 msgstr "%1 [видео]"
 
-#: src/lib/video_content.cc:439
+#: src/lib/video_content.cc:447
 #, c-format
 msgid ", pixel aspect ratio %.2f:1"
 msgstr ", соотношение сторон пикселей %.2f:1"
@@ -167,7 +167,7 @@ msgstr "2.39 (Scope)"
 msgid "3D denoiser"
 msgstr "Подавитель шума 3D"
 
-#: src/lib/hints.cc:212
+#: src/lib/hints.cc:209
 msgid ""
 "4K 3D is only supported by a very limited number of projectors.  Unless you "
 "know that you will play this DCP back on a capable projector, it is "
@@ -199,7 +199,7 @@ msgid ""
 "Paypal to donate €10</a></ul><p>Thank you!"
 msgstr ""
 
-#: src/lib/hints.cc:169
+#: src/lib/hints.cc:166
 msgid ""
 "A few projectors have problems playing back very high bit-rate DCPs.  It is "
 "a good idea to drop the JPEG2000 bandwidth down to about 200Mbit/s; this is "
@@ -209,6 +209,13 @@ msgstr ""
 "битрейтом. Хорошей идеей было бы снизить пропускную способность JPEG2000 до "
 "200Мбит/с; вряд ли это приведёт к заметным изменениям изображения."
 
+#: src/lib/text_content.cc:248
+msgid ""
+"A subtitle or closed caption file in this project is marked with the "
+"language '%1', which DCP-o-matic does not recognise.  The file's language "
+"has been cleared."
+msgstr ""
+
 #: src/lib/ffmpeg_content.cc:635
 msgid "ARIB STD-B67 ('Hybrid log-gamma')"
 msgstr "ARIB STD-B67 ('Гибрид log-gamma')"
@@ -217,7 +224,7 @@ msgstr "ARIB STD-B67 ('Гибрид log-gamma')"
 msgid "Advertisement"
 msgstr "ADV (Реклама)"
 
-#: src/lib/hints.cc:146
+#: src/lib/hints.cc:143
 msgid ""
 "All of your content is in Scope (2.39:1) but your DCP's container is Flat "
 "(1.85:1).  This will letter-box your content inside a Flat (1.85:1) frame.  "
@@ -228,7 +235,7 @@ msgstr ""
 "значит, что в кадре по верху и низу вашего контента будут черные области. Вы "
 "можете изменить формат кадра вашего DCP на SCOPE (2.39:1) на вкладке \"DCP\"."
 
-#: src/lib/hints.cc:150
+#: src/lib/hints.cc:147
 #, fuzzy
 msgid ""
 "All of your content narrower than 1.90:1 but your DCP's container is Scope "
@@ -253,54 +260,54 @@ msgstr "Идёт анализ аудио"
 msgid "Analysing subtitles"
 msgstr "Проверка субтитров"
 
-#: src/lib/hints.cc:368
+#: src/lib/hints.cc:365
 msgid ""
 "At least one marker comes after the end of the project and will be ignored."
 msgstr ""
 
-#: src/lib/hints.cc:473
+#: src/lib/hints.cc:470
 msgid "At least one of your closed caption files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:466
+#: src/lib/hints.cc:463
 msgid "At least one of your closed caption files' XML part is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:481
+#: src/lib/hints.cc:478
 msgid "At least one of your subtitle files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:445
+#: src/lib/hints.cc:442
 msgid ""
 "At least one of your subtitle lines has more than 52 characters.  It is "
 "recommended to make each line 52 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:447
+#: src/lib/hints.cc:444
 msgid ""
 "At least one of your subtitle lines has more than 79 characters.  You should "
 "make each line 79 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:590
+#: src/lib/hints.cc:587
 msgid ""
 "At least one of your subtitles has more than 3 lines.  It is advisable to "
 "use no more than 3 lines."
 msgstr ""
 
-#: src/lib/hints.cc:580
+#: src/lib/hints.cc:577
 msgid ""
 "At least one of your subtitles lasts less than 15 frames.  It is advisable "
 "to make each subtitle at least 15 frames long."
 msgstr ""
 
-#: src/lib/hints.cc:585
+#: src/lib/hints.cc:582
 msgid ""
 "At least one of your subtitles starts less than 2 frames after the previous "
 "one.  It is advisable to make the gap between subtitles at least 2 frames."
 msgstr ""
 
-#: src/lib/hints.cc:633
+#: src/lib/hints.cc:630
 msgid ""
 "At least one piece of subtitle or closed caption content has no specified "
 "language.  It is advisable to set the language for each piece of subtitle or "
@@ -374,15 +381,15 @@ msgstr "Бит на пиксель"
 msgid "Bob Weaver Deinterlacing Filter"
 msgstr "Очередной фильтр деинтерлейсинга"
 
-#: src/lib/util.cc:598
+#: src/lib/util.cc:601
 msgid "BsL"
 msgstr "BsL"
 
-#: src/lib/util.cc:599
+#: src/lib/util.cc:602
 msgid "BsR"
 msgstr "BsR"
 
-#: src/lib/util.cc:590
+#: src/lib/util.cc:593
 msgid "C"
 msgstr "C"
 
@@ -390,7 +397,7 @@ msgstr "C"
 msgid "Cancelled"
 msgstr "Отменено"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "Cannot contain slashes"
 msgstr "Не может содержать слэши"
 
@@ -398,11 +405,11 @@ msgstr "Не может содержать слэши"
 msgid "Cannot handle pixel format %1 during %2"
 msgstr "Невозможно обработать формат пикселя %1 во время %2"
 
-#: src/lib/film.cc:1662
+#: src/lib/film.cc:1711
 msgid "Cannot make a KDM as this project is not encrypted."
 msgstr "Нельзя создать KDM т.к. этот проект не зашифрован."
 
-#: src/lib/util.cc:559
+#: src/lib/util.cc:562
 msgid "Centre"
 msgstr "Центральный"
 
@@ -470,7 +477,7 @@ msgstr ""
 msgid "Computing digest"
 msgstr "Проверка целостности"
 
-#: src/lib/writer.cc:535
+#: src/lib/writer.cc:531
 msgid "Computing digests"
 msgstr "Проверка целостности"
 
@@ -502,7 +509,7 @@ msgid "Content to be joined must all have or not have video"
 msgstr ""
 "Для присоединения контента, всё остальное должно иметь либо не иметь видео"
 
-#: src/lib/text_content.cc:305
+#: src/lib/text_content.cc:320
 #, fuzzy
 msgid ""
 "Content to be joined must both be main subtitle languages or both additional."
@@ -510,17 +517,17 @@ msgstr ""
 "Для присоединения контента должен быть одинаковый интервал между рядами "
 "субтитров."
 
-#: src/lib/video_content.cc:207
+#: src/lib/video_content.cc:210
 #, fuzzy
 msgid "Content to be joined must have all its video used or not used."
 msgstr "Для присоединения контента должна быть одинаковой частота кадров видео"
 
-#: src/lib/text_content.cc:260
+#: src/lib/text_content.cc:275
 msgid "Content to be joined must have the same 'burn subtitles' setting."
 msgstr ""
 "Для присоединения контента должны быть такие же настройки \"вшить субтитры\"."
 
-#: src/lib/text_content.cc:256
+#: src/lib/text_content.cc:271
 msgid "Content to be joined must have the same 'use subtitles' setting."
 msgstr ""
 "Для присоединения контента должны быть такие же настройки \"использовать "
@@ -534,74 +541,74 @@ msgstr "Для присоединения контента должна быть
 msgid "Content to be joined must have the same audio gain."
 msgstr "Для присоединения контента должно быть одинаковое усиление аудио."
 
-#: src/lib/video_content.cc:239
+#: src/lib/video_content.cc:242
 #, fuzzy
 msgid "Content to be joined must have the same burnt subtitle language."
 msgstr ""
 "Для присоединения контента должны быть такие же настройки \"вшить субтитры\"."
 
-#: src/lib/video_content.cc:231
+#: src/lib/video_content.cc:234
 msgid "Content to be joined must have the same colour conversion."
 msgstr ""
 "Для присоединения контента должно быть одинаковое преобразование цвета."
 
-#: src/lib/video_content.cc:219
+#: src/lib/video_content.cc:222
 msgid "Content to be joined must have the same crop."
 msgstr "Для присоединения контента должно быть одинаковое кадрирование."
 
-#: src/lib/video_content.cc:223
+#: src/lib/video_content.cc:226
 #, fuzzy
 msgid "Content to be joined must have the same custom ratio setting."
 msgstr ""
 "Для присоединения контента должны быть одинаковые параметры масштабирования."
 
-#: src/lib/video_content.cc:227
+#: src/lib/video_content.cc:230
 #, fuzzy
 msgid "Content to be joined must have the same custom size setting."
 msgstr ""
 "Для присоединения контента должны быть одинаковые параметры масштабирования."
 
-#: src/lib/video_content.cc:235
+#: src/lib/video_content.cc:238
 msgid "Content to be joined must have the same fades."
 msgstr "Для присоединения контента должно быть одинаковое угасание."
 
-#: src/lib/text_content.cc:288
+#: src/lib/text_content.cc:303
 msgid "Content to be joined must have the same outline width."
 msgstr "Для присоединения контента должна быть одинаковая ширина обводки."
 
-#: src/lib/video_content.cc:211
+#: src/lib/video_content.cc:214
 msgid "Content to be joined must have the same picture size."
 msgstr "Для присоединения контента должен быть одинаковый размер изображения."
 
-#: src/lib/text_content.cc:264
+#: src/lib/text_content.cc:279
 msgid "Content to be joined must have the same subtitle X offset."
 msgstr ""
 "Для присоединения контента должно быть одинаковое горизонтальное смещение "
 "субтитров."
 
-#: src/lib/text_content.cc:272
+#: src/lib/text_content.cc:287
 msgid "Content to be joined must have the same subtitle X scale."
 msgstr ""
 "Для присоединения контента должен быть одинаковый размер субтитров по "
 "горизонтали."
 
-#: src/lib/text_content.cc:268
+#: src/lib/text_content.cc:283
 msgid "Content to be joined must have the same subtitle Y offset."
 msgstr ""
 "Для присоединения контента должно быть одинаковое вертикальное смещение "
 "субтитров."
 
-#: src/lib/text_content.cc:276
+#: src/lib/text_content.cc:291
 msgid "Content to be joined must have the same subtitle Y scale."
 msgstr ""
 "Для присоединения контента должен быть одинаковый размер субтитров по "
 "вертикали."
 
-#: src/lib/text_content.cc:284
+#: src/lib/text_content.cc:299
 msgid "Content to be joined must have the same subtitle fades."
 msgstr "Для присоединения контента должно быть одинаковое угасание субтитров."
 
-#: src/lib/text_content.cc:280
+#: src/lib/text_content.cc:295
 msgid "Content to be joined must have the same subtitle line spacing."
 msgstr ""
 "Для присоединения контента должен быть одинаковый интервал между рядами "
@@ -611,15 +618,15 @@ msgstr ""
 msgid "Content to be joined must have the same video frame rate"
 msgstr "Для присоединения контента должна быть одинаковой частота кадров видео"
 
-#: src/lib/video_content.cc:215
+#: src/lib/video_content.cc:218
 msgid "Content to be joined must have the same video frame type."
 msgstr "Для присоединения контента должен быть одинаковый тип видео."
 
-#: src/lib/text_content.cc:297
+#: src/lib/text_content.cc:312
 msgid "Content to be joined must use the same DCP track."
 msgstr "Для присоединения контента должна использоваться та же DCP дорожка."
 
-#: src/lib/text_content.cc:293 src/lib/text_content.cc:313
+#: src/lib/text_content.cc:308 src/lib/text_content.cc:328
 msgid "Content to be joined must use the same fonts."
 msgstr "Для присоединения контента должен использоваться одинаковый шрифт."
 
@@ -627,12 +634,12 @@ msgstr "Для присоединения контента должен испо
 msgid "Content to be joined must use the same subtitle stream."
 msgstr "Для присоединения контента необходимо использовать те же субтитры."
 
-#: src/lib/text_content.cc:301
+#: src/lib/text_content.cc:316
 #, fuzzy
 msgid "Content to be joined must use the same text language."
 msgstr "Для присоединения контента должен использоваться одинаковый шрифт."
 
-#: src/lib/video_content.cc:430
+#: src/lib/video_content.cc:438
 msgid "Content video is %1x%2"
 msgstr "Разрешение контента: %1x%2"
 
@@ -657,7 +664,7 @@ msgstr "Не удалось подключиться к серверу %1 (%2)"
 msgid "Could not create remote directory %1 (%2)"
 msgstr "Не удалось создать удалённый каталог %1 (%2)"
 
-#: src/lib/image_examiner.cc:65
+#: src/lib/image_examiner.cc:64
 msgid "Could not decode JPEG2000 file %1 (%2)"
 msgstr "Не удалось декодировать JPEG2000-файл(ы) %1 (%2)"
 
@@ -693,7 +700,7 @@ msgstr "Не удалось открыть загруженный ZIP-файл (
 msgid "Could not open file for writing"
 msgstr "Не удалось открыть файл для записи"
 
-#: src/lib/ffmpeg_file_encoder.cc:269
+#: src/lib/ffmpeg_file_encoder.cc:265
 #, fuzzy
 msgid "Could not open output file %1 (%2)"
 msgstr "не удалось записать в файл %1 (%2)"
@@ -710,19 +717,19 @@ msgstr "Не удалось начать передачу"
 msgid "Could not write to remote file (%1)"
 msgstr "Не удалось записать в удаленный файл (%1)"
 
-#: src/lib/util.cc:569
+#: src/lib/util.cc:572
 msgid "D-BOX primary"
 msgstr "D-BOX основной (DBP)"
 
-#: src/lib/util.cc:570
+#: src/lib/util.cc:573
 msgid "D-BOX secondary"
 msgstr "D-BOX второстепенный (DBS)"
 
-#: src/lib/util.cc:600
+#: src/lib/util.cc:603
 msgid "DBP"
 msgstr "DBP"
 
-#: src/lib/util.cc:601
+#: src/lib/util.cc:604
 msgid "DBS"
 msgstr "DBS"
 
@@ -734,7 +741,7 @@ msgstr "DCI Flat"
 msgid "DCI Scope"
 msgstr "DCI Scope"
 
-#: src/lib/dcp_subtitle_content.cc:103
+#: src/lib/dcp_subtitle_content.cc:104
 msgid "DCP XML subtitles"
 msgstr "DCP XML субтитры"
 
@@ -759,7 +766,7 @@ msgstr ""
 "DCP-o-matic не удалось открыть файл %1 (%2). Возможно он не существует или "
 "имеет неожиданный формат."
 
-#: src/lib/film.cc:1565
+#: src/lib/film.cc:1614
 msgid ""
 "DCP-o-matic had to change your settings for referring to DCPs as OV.  Please "
 "review those settings to make sure they are what you want."
@@ -768,7 +775,7 @@ msgstr ""
 "Пожалуйста, посмотрите на эти настройки, чтобы убедиться, что это то, чего "
 "вы хотите."
 
-#: src/lib/film.cc:1533
+#: src/lib/film.cc:1582
 #, fuzzy
 msgid ""
 "DCP-o-matic had to change your settings so that the film's frame rate is the "
@@ -784,7 +791,7 @@ msgid ""
 msgstr ""
 "DCP-o-matic больше не поддерживает фильтр `%1', поэтому он был выключен."
 
-#: src/lib/config.cc:359 src/lib/config.cc:1114
+#: src/lib/config.cc:357 src/lib/config.cc:1114
 msgid "DCP-o-matic notification"
 msgstr "Уведомление DCP-o-matic"
 
@@ -877,7 +884,7 @@ msgstr "Ошибка в файле субтитров: найдено %1, в т�
 msgid "Error: %1"
 msgstr "Ошибка: (%1)"
 
-#: src/lib/hints.cc:408
+#: src/lib/hints.cc:405
 #, fuzzy
 msgid "Examining audio, subtitles and closed captions"
 msgstr "Проверка скрытых титров"
@@ -890,7 +897,7 @@ msgstr "Проверка контента"
 msgid "Examining subtitles"
 msgstr "Проверка субтитров"
 
-#: src/lib/hints.cc:406
+#: src/lib/hints.cc:403
 #, fuzzy
 msgid "Examining subtitles and closed captions"
 msgstr "Проверка скрытых титров"
@@ -921,7 +928,7 @@ msgstr "Ошибка отправки email"
 msgid "Feature"
 msgstr "FTR (Фильм)"
 
-#: src/lib/content.cc:464
+#: src/lib/content.cc:468
 msgid "Filename"
 msgstr "Имя файла"
 
@@ -933,11 +940,11 @@ msgstr "Проект"
 msgid "Finding length"
 msgstr "Расчет длительности"
 
-#: src/lib/content.cc:471
+#: src/lib/content.cc:475
 msgid "Frame rate"
 msgstr "Частота кадров"
 
-#: src/lib/util.cc:943
+#: src/lib/util.cc:946
 msgid "Friday"
 msgstr "Пятница"
 
@@ -981,11 +988,11 @@ msgstr "Гамма 28 (BT470BG)"
 msgid "Gradient debander"
 msgstr "Разбиение градиента"
 
-#: src/lib/util.cc:594
+#: src/lib/util.cc:597
 msgid "HI"
 msgstr "HI"
 
-#: src/lib/util.cc:563
+#: src/lib/util.cc:566
 msgid "Hearing impaired"
 msgstr "Для слабослышащих"
 
@@ -1009,20 +1016,20 @@ msgstr "IEC61966-2-1 (sRGB или sYCC)"
 msgid "IEC61966-2-4"
 msgstr "IEC61966-2-4"
 
-#: src/lib/hints.cc:188
+#: src/lib/hints.cc:185
 msgid "If you do use 25fps you should change your DCP standard to SMPTE."
 msgstr ""
 "Если вы используете 25 кадр/сек, вам следует изменить стандарт вашего DCP на "
 "SMPTE."
 
-#: src/lib/hints.cc:251
+#: src/lib/hints.cc:248
 msgid ""
 "In general it is now advisable to make SMPTE DCPs unless you have a "
 "particular reason to use Interop.  You are advised to set your DCP to use "
 "the SMPTE standard in the \"DCP\" tab."
 msgstr ""
 
-#: src/lib/hints.cc:573
+#: src/lib/hints.cc:570
 msgid ""
 "It is advisable to put your first subtitle at least 4 seconds after the "
 "start of the DCP to make sure it is seen."
@@ -1036,7 +1043,7 @@ msgstr "Неизвестно, что вызвало эту ошибку."
 msgid "JEDEC P22"
 msgstr "JEDEC P22"
 
-#: src/lib/config.cc:349 src/lib/config.cc:1099
+#: src/lib/config.cc:347 src/lib/config.cc:1099
 msgid "KDM delivery: $CPL_NAME"
 msgstr "Назначение KDM: $CPL_NAME"
 
@@ -1044,39 +1051,39 @@ msgstr "Назначение KDM: $CPL_NAME"
 msgid "Kernel deinterlacer"
 msgstr "Деинтерлейсинг ядром"
 
-#: src/lib/ffmpeg_encoder.cc:251 src/lib/util.cc:588
+#: src/lib/ffmpeg_encoder.cc:253 src/lib/util.cc:591
 msgid "L"
 msgstr "L"
 
-#: src/lib/util.cc:596
+#: src/lib/util.cc:599
 msgid "Lc"
 msgstr "Lc"
 
-#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:557
+#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:560
 msgid "Left"
 msgstr "Левый"
 
-#: src/lib/util.cc:565
+#: src/lib/util.cc:568
 msgid "Left centre"
 msgstr "Левый центральный"
 
-#: src/lib/util.cc:567
+#: src/lib/util.cc:570
 msgid "Left rear surround"
 msgstr "Левый тыловой surround"
 
-#: src/lib/util.cc:561
+#: src/lib/util.cc:564
 msgid "Left surround"
 msgstr "Левый surround"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "Length"
 msgstr "Длительность"
 
-#: src/lib/util.cc:591
+#: src/lib/util.cc:594
 msgid "Lfe"
 msgstr "LFE"
 
-#: src/lib/util.cc:560
+#: src/lib/util.cc:563
 msgid "Lfe (sub)"
 msgstr "НЧ (sub)"
 
@@ -1100,11 +1107,11 @@ msgstr "Логарифмический (диапазон 100:1)"
 msgid "Logarithmic (316:1 range)"
 msgstr "Логарифмический (диапазон 316:1)"
 
-#: src/lib/exceptions.cc:145
+#: src/lib/exceptions.cc:152
 msgid "Lost communication between main and writer processes"
 msgstr ""
 
-#: src/lib/util.cc:592
+#: src/lib/util.cc:595
 msgid "Ls"
 msgstr "Ls"
 
@@ -1116,19 +1123,19 @@ msgstr "Mid-side декодер"
 msgid "Misc"
 msgstr "Разное"
 
-#: src/lib/dcp_examiner.cc:164
+#: src/lib/dcp_examiner.cc:175
 msgid "Mismatched audio channel counts in DCP"
 msgstr "Несоответствие количества аудиоканалов в DCP"
 
-#: src/lib/dcp_examiner.cc:170
+#: src/lib/dcp_examiner.cc:181
 msgid "Mismatched audio sample rates in DCP"
 msgstr "Несоответствие частоты дискретизации аудио в DCP"
 
-#: src/lib/dcp_examiner.cc:137
+#: src/lib/dcp_examiner.cc:145
 msgid "Mismatched frame rates in DCP"
 msgstr "Несоответствие частоты кадров в DCP"
 
-#: src/lib/dcp_examiner.cc:145
+#: src/lib/dcp_examiner.cc:153
 msgid "Mismatched video sizes in DCP"
 msgstr "Несоответствие размера видео в DCP"
 
@@ -1136,11 +1143,11 @@ msgstr "Несоответствие размера видео в DCP"
 msgid "Missing required setting %1"
 msgstr "Отсутствует обязательная настройка %1"
 
-#: src/lib/util.cc:935
+#: src/lib/util.cc:938
 msgid "Monday"
 msgstr "Понедельник"
 
-#: src/lib/writer.cc:763
+#: src/lib/writer.cc:759
 msgid "Mono"
 msgstr "Моно"
 
@@ -1164,7 +1171,7 @@ msgstr "В папке не найдено подходящих изображе�
 msgid "Noise reduction"
 msgstr "Подавление шума"
 
-#: src/lib/writer.cc:731 src/lib/writer.cc:738 src/lib/writer.cc:761
+#: src/lib/writer.cc:727 src/lib/writer.cc:734 src/lib/writer.cc:757
 msgid "None"
 msgstr "Ничего"
 
@@ -1202,7 +1209,7 @@ msgstr "Сверхполный подавитель шума небольшой
 msgid "P3"
 msgstr "P3"
 
-#: src/lib/util.h:59
+#: src/lib/util.h:64
 msgid ""
 "Please report this problem by using Help -> Report a problem or via email to "
 "carl@dcpomatic.com"
@@ -1214,7 +1221,7 @@ msgstr ""
 msgid "Policy"
 msgstr "POL (Стратегический)"
 
-#: src/lib/content.cc:480
+#: src/lib/content.cc:484
 msgid "Prepared for video frame rate"
 msgstr "Подготовлено для частоты кадров видео"
 
@@ -1230,7 +1237,7 @@ msgstr ""
 msgid "Public Service Announcement"
 msgstr "PSA (Социальная реклама)"
 
-#: src/lib/ffmpeg_encoder.cc:256 src/lib/util.cc:589
+#: src/lib/ffmpeg_encoder.cc:258 src/lib/util.cc:592
 msgid "R"
 msgstr "R"
 
@@ -1242,7 +1249,7 @@ msgstr "RGB / sRGB (IEC61966-2-1)"
 msgid "Rating"
 msgstr "RTG (Рейтинг)"
 
-#: src/lib/util.cc:597
+#: src/lib/util.cc:600
 msgid "Rc"
 msgstr "Rc"
 
@@ -1262,19 +1269,19 @@ msgstr "Rec. 601"
 msgid "Rec. 709"
 msgstr "Rec. 709"
 
-#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:558
+#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:561
 msgid "Right"
 msgstr "Правый"
 
-#: src/lib/util.cc:566
+#: src/lib/util.cc:569
 msgid "Right centre"
 msgstr "Правый центральный"
 
-#: src/lib/util.cc:568
+#: src/lib/util.cc:571
 msgid "Right rear surround"
 msgstr "Правый тыловой surround"
 
-#: src/lib/util.cc:562
+#: src/lib/util.cc:565
 msgid "Right surround"
 msgstr "Правый surround"
 
@@ -1286,7 +1293,7 @@ msgstr "Повернуть на 90º против часовой стрелки"
 msgid "Rotate 90 degrees clockwise"
 msgstr "Повернуть на 90º по часовой стрелке"
 
-#: src/lib/util.cc:593
+#: src/lib/util.cc:596
 msgid "Rs"
 msgstr "Rs"
 
@@ -1311,7 +1318,7 @@ msgstr "SMPTE 2085, Y'D'zD'x"
 msgid "SMPTE 240M"
 msgstr "SMPTE 240M"
 
-#: src/lib/hints.cc:615
+#: src/lib/hints.cc:612
 msgid ""
 "SMPTE DCPs with the type FTR (feature) should have markers for the first "
 "frame of end credits (FFEC) and the first frame of moving credits (FFMC).  "
@@ -1349,7 +1356,7 @@ msgstr "Ошибка SSH (%1)"
 msgid "SSH error [%1] (%2)"
 msgstr "Ошибка SSH (%1)"
 
-#: src/lib/util.cc:945
+#: src/lib/util.cc:948
 msgid "Saturday"
 msgstr "Суббота"
 
@@ -1365,11 +1372,11 @@ msgstr "Отправка почты"
 msgid "Short"
 msgstr "SHR (Короткометражный фильм)"
 
-#: src/lib/util.cc:602
+#: src/lib/util.cc:605
 msgid "Sign"
 msgstr ""
 
-#: src/lib/video_content.cc:500
+#: src/lib/video_content.cc:510
 msgid "Size"
 msgstr "Размер"
 
@@ -1399,28 +1406,28 @@ msgstr ""
 "Эти файлы сейчас будут перепроверены, поэтому возможно вам придётся "
 "проверить их настройки."
 
-#: src/lib/hints.cc:554
+#: src/lib/hints.cc:551
 msgid ""
 "Some of your closed captions span more than %1 lines, so they will be "
 "truncated."
 msgstr ""
 
-#: src/lib/hints.cc:653
+#: src/lib/hints.cc:650
 msgid ""
 "Some of your content has audio but you have not set the audio language.  It "
 "is advisable to set the audio language in the \"DCP\" tab unless your audio "
 "has no spoken parts."
 msgstr ""
 
-#: src/lib/film.cc:406
+#: src/lib/film.cc:417
 msgid "Some of your content needs a KDM"
 msgstr "Часть вашего контента требует KDM"
 
-#: src/lib/film.cc:409
+#: src/lib/film.cc:420
 msgid "Some of your content needs an OV"
 msgstr "Часть вашего контента требует OV"
 
-#: src/lib/writer.cc:765
+#: src/lib/writer.cc:761
 msgid "Stereo"
 msgstr "Стерео"
 
@@ -1432,7 +1439,7 @@ msgstr "Преобразователь A стерео-->5.1"
 msgid "Stereo to 5.1 up-mixer B"
 msgstr "Преобразователь B стерео-->5.1"
 
-#: src/lib/util.cc:933
+#: src/lib/util.cc:936
 msgid "Sunday"
 msgstr "Воскресенье"
 
@@ -1452,7 +1459,7 @@ msgstr "TST (Тестовый)"
 msgid "Text subtitles"
 msgstr "Текстовые субтитры"
 
-#: src/lib/film.cc:389
+#: src/lib/film.cc:400
 msgid "The DCP is empty, perhaps because all the content has zero length."
 msgstr ""
 
@@ -1464,7 +1471,7 @@ msgstr "Цепочка сертификатов для подписи невер
 msgid "The certificate chain for signing is invalid (%1)"
 msgstr "Цепочка сертификатов для подписи неверна (%1)"
 
-#: src/lib/video_decoder.cc:86
+#: src/lib/video_decoder.cc:81
 msgid ""
 "The content file %1 is set as 3D but does not appear to contain 3D images.  "
 "Please set it to 2D.  You can still make a 3D DCP from this content by "
@@ -1495,7 +1502,7 @@ msgstr "Файл %1 был обрезан на %2 миллисекунд мен�
 msgid "The file %1 has been trimmed by %2 milliseconds more."
 msgstr "Файл %1 был обрезан на %2 миллисекунд более."
 
-#: src/lib/hints.cc:241
+#: src/lib/hints.cc:238
 msgid ""
 "There is a large difference between the frame rate of your DCP and that of "
 "some of your content.  This will cause your audio to play back at a much "
@@ -1509,7 +1516,7 @@ msgstr ""
 "вашему контенту, при условии, что ваши целевая проекционная система "
 "поддерживает выбранную вами скорость DCP."
 
-#: src/lib/dcp_content.cc:657
+#: src/lib/dcp_content.cc:659
 msgid "There is no video in this DCP"
 msgstr "В данном DCP нет видео"
 
@@ -1523,12 +1530,12 @@ msgstr ""
 "попробуйте уменьшить число потоков кодирования в Настройках во вкладке "
 "\"Основные\"."
 
-#: src/lib/util.cc:1146
+#: src/lib/util.cc:1150
 #, fuzzy
 msgid "This KDM was made for DCP-o-matic but not for its leaf certificate."
 msgstr "KDM был сделан для DCP-o-matic, но не для его leaf-сертификата."
 
-#: src/lib/util.cc:1144
+#: src/lib/util.cc:1148
 #, fuzzy
 msgid "This KDM was not made for DCP-o-matic's decryption certificate."
 msgstr "KDM не был сделан для сертификата расшифровки DCP-o-matic."
@@ -1556,7 +1563,7 @@ msgstr ""
 "Этот файл - ключ (KDM). Ключи добавляются к DCP нажатием правой клавиши на "
 "контент и выбором \"Добавить KDM\" в контекстном меню."
 
-#: src/lib/film.cc:581
+#: src/lib/film.cc:595
 msgid ""
 "This film was created with a newer version of DCP-o-matic, and it cannot be "
 "loaded into this version.  Sorry!"
@@ -1564,7 +1571,7 @@ msgstr ""
 "Проект создан более новой версией DCP-o-matic и не быть загружен этой "
 "версией. Извините!"
 
-#: src/lib/film.cc:566
+#: src/lib/film.cc:580
 msgid ""
 "This film was created with an older version of DCP-o-matic, and "
 "unfortunately it cannot be loaded into this version.  You will need to "
@@ -1574,7 +1581,7 @@ msgstr ""
 "быть загружен этой версией. Вам необходимо создать новый проект, заново "
 "добавить контент и настроить его. Извините!"
 
-#: src/lib/util.cc:941
+#: src/lib/util.cc:944
 msgid "Thursday"
 msgstr "Четверг"
 
@@ -1595,7 +1602,7 @@ msgstr "Транскодирование %1"
 msgid "Transitional"
 msgstr "XSN (Транзитный)"
 
-#: src/lib/util.cc:937
+#: src/lib/util.cc:940
 msgid "Tuesday"
 msgstr "Вторник"
 
@@ -1620,7 +1627,7 @@ msgstr "неизвестно"
 msgid "Unknown error"
 msgstr "Неизвестная ошибка"
 
-#: src/lib/ffmpeg_decoder.cc:343
+#: src/lib/ffmpeg_decoder.cc:339
 msgid "Unrecognised audio sample format (%1)"
 msgstr "Нераспознанный формат аудио (%1)"
 
@@ -1640,7 +1647,7 @@ msgstr "Не определено"
 msgid "Untitled"
 msgstr "Безымянный"
 
-#: src/lib/util.cc:571 src/lib/util.cc:572
+#: src/lib/util.cc:574 src/lib/util.cc:575
 msgid "Unused"
 msgstr "Не используется"
 
@@ -1652,7 +1659,7 @@ msgstr "Преобразовать Л"
 msgid "Upmix R"
 msgstr "Преобразовать П"
 
-#: src/lib/util.cc:595
+#: src/lib/util.cc:598
 msgid "VI"
 msgstr "VI"
 
@@ -1664,7 +1671,7 @@ msgstr "Проверить DCP"
 msgid "Vertical flip"
 msgstr "Перевернуть по вертикали"
 
-#: src/lib/util.cc:564
+#: src/lib/util.cc:567
 msgid "Visually impaired"
 msgstr "Для слабовидящих"
 
@@ -1676,7 +1683,7 @@ msgstr "Ожидание"
 msgid "Weave filter"
 msgstr "Фильтр Weave"
 
-#: src/lib/util.cc:939
+#: src/lib/util.cc:942
 msgid "Wednesday"
 msgstr "Среда"
 
@@ -1688,7 +1695,7 @@ msgstr "YCOCG"
 msgid "Yet Another Deinterlacing Filter"
 msgstr "Очередной фильтр деинтерлейсинга"
 
-#: src/lib/hints.cc:201
+#: src/lib/hints.cc:198
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You are advised to change the DCP frame rate "
@@ -1698,7 +1705,7 @@ msgstr ""
 "поддерживается всеми проекторами.  Советуем изменить частоту кадров вашего "
 "DCP на %2 кадр/сек."
 
-#: src/lib/hints.cc:185
+#: src/lib/hints.cc:182
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You may want to consider changing your frame "
@@ -1708,7 +1715,7 @@ msgstr ""
 "поддерживается всеми проекторами.  Возможно вы захотите изменить частоту "
 "кадров на %2 кадр/сек."
 
-#: src/lib/hints.cc:195
+#: src/lib/hints.cc:192
 msgid ""
 "You are set up for a DCP frame rate of 30fps, which is not supported by all "
 "projectors.  Be aware that you may have compatibility problems."
@@ -1717,7 +1724,7 @@ msgstr ""
 "поддерживается всеми проекторами.  Имейте ввиду, что у вас могут возникнуть "
 "проблемы совместимости."
 
-#: src/lib/hints.cc:306
+#: src/lib/hints.cc:303
 msgid ""
 "You are using 3D content but your DCP is set to 2D.  Set the DCP to 3D if "
 "you want to play it back on a 3D system (e.g. Real-D, MasterImage etc.)"
@@ -1726,7 +1733,7 @@ msgstr ""
 "если хотите воспроизвести его на 3D-системе (напр. Real-D, MasterImage и т."
 "п.)"
 
-#: src/lib/hints.cc:122
+#: src/lib/hints.cc:119
 msgid ""
 "You are using DCP-o-matic's stereo-to-5.1 upmixer.  This is experimental and "
 "may result in poor-quality audio.  If you continue, you should listen to the "
@@ -1737,7 +1744,7 @@ msgstr ""
 "должны прослушать полученный DCP в кинотеатре, чтобы убедиться, что он "
 "звучит хорошо."
 
-#: src/lib/hints.cc:290
+#: src/lib/hints.cc:287
 msgid ""
 "You have %1 files that look like they are VOB files from DVD. You should "
 "join them to ensure smooth joins between the files."
@@ -1746,20 +1753,20 @@ msgstr ""
 "объединить (присоединить) их, чтобы гарантировать гладкие соединения между "
 "файлами."
 
-#: src/lib/film.cc:1529
+#: src/lib/film.cc:1578
 msgid ""
 "You have more than one piece of Atmos content, and they do not have the same "
 "frame rate.  You must remove some Atmos content."
 msgstr ""
 
-#: src/lib/hints.cc:561
+#: src/lib/hints.cc:558
 #, fuzzy
 msgid ""
 "You have overlapping closed captions, which are not allowed in Interop "
 "DCPs.  Change your DCP standard to SMPTE."
 msgstr "У вас есть перекрывающиеся субтитры, которые не допускаются."
 
-#: src/lib/hints.cc:274
+#: src/lib/hints.cc:271
 msgid ""
 "You have specified a font file which is larger than 640kB.  This is very "
 "likely to cause problems on playback."
@@ -1767,11 +1774,11 @@ msgstr ""
 "Вы выбрали шрифт, размер которого больше 640 кБ. Весьма вероятно, что это "
 "вызовет проблемы при воспроизведении."
 
-#: src/lib/film.cc:385
+#: src/lib/film.cc:396
 msgid "You must add some content to the DCP before creating it"
 msgstr "Вам необходимо добавить контент в DCP перед его созданием"
 
-#: src/lib/hints.cc:112
+#: src/lib/hints.cc:109
 msgid ""
 "Your DCP has fewer than 6 audio channels.  This may cause problems on some "
 "projectors.  You may want to set the DCP to have 6 channels.  It does not "
@@ -1779,7 +1786,7 @@ msgid ""
 "extras with silence."
 msgstr ""
 
-#: src/lib/hints.cc:160
+#: src/lib/hints.cc:157
 #, fuzzy
 msgid ""
 "Your DCP uses an unusual container ratio.  This may cause problems on some "
@@ -1789,7 +1796,7 @@ msgstr ""
 "проблемам на некоторых проекторах. Если возможно, используйте соотношения "
 "сторон Flat или Scope для DCP"
 
-#: src/lib/hints.cc:340
+#: src/lib/hints.cc:337
 msgid ""
 "Your audio level is very high (on %1).  You should reduce the gain of your "
 "audio content."
@@ -1797,7 +1804,7 @@ msgstr ""
 "Уровень вашего аудио слишком высок (на %1). Вам стоит понизить уровень "
 "громкости вашего аудио-контента."
 
-#: src/lib/config.cc:289
+#: src/lib/config.cc:287
 msgid ""
 "Your default container is not valid and has been changed to Flat (1.85:1)"
 msgstr ""
@@ -1826,7 +1833,7 @@ msgstr "[последовательность]"
 msgid "[still]"
 msgstr "[статичный]"
 
-#: src/lib/dcp_subtitle_content.cc:97 src/lib/string_text_file_content.cc:78
+#: src/lib/dcp_subtitle_content.cc:98 src/lib/string_text_file_content.cc:78
 msgid "[subtitles]"
 msgstr "[субтитры]"
 
@@ -1844,11 +1851,11 @@ msgstr "таймаут соединения"
 msgid "connecting"
 msgstr "соединение"
 
-#: src/lib/film.cc:381
+#: src/lib/film.cc:392
 msgid "container"
 msgstr "контейнер"
 
-#: src/lib/film.cc:393
+#: src/lib/film.cc:404
 msgid "content type"
 msgstr "тип контента"
 
@@ -1904,78 +1911,78 @@ msgstr "ошибка во время async_read (%1)"
 msgid "error during async_write (%1)"
 msgstr "ошибка во время async_write (%1)"
 
-#: src/lib/content.cc:473 src/lib/content.cc:482
+#: src/lib/content.cc:477 src/lib/content.cc:486
 msgid "frames per second"
 msgstr "кадра(ов) в секунду"
 
 #. / TRANSLATORS: h here is an abbreviation for hours
-#: src/lib/util.cc:200
+#: src/lib/util.cc:203
 msgid "h"
 msgstr "ч"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:750
+#: src/lib/dcp_content.cc:752
 msgid "it does not have closed captions in all its reels."
 msgstr "во всех бобинах нет скрытых титров."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:739
+#: src/lib/dcp_content.cc:741
 msgid "it does not have open subtitles in all its reels."
 msgstr "во всех бобинах нет субтитров."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:706
+#: src/lib/dcp_content.cc:708
 msgid "it does not have sound in all its reels."
 msgstr "во всех бобинах нет звука."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:610
+#: src/lib/dcp_content.cc:612
 msgid "it has a different frame rate to the film."
 msgstr "частота кадров проекта отличается от частоты кадров DCP."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:765
+#: src/lib/dcp_content.cc:767
 msgid ""
 "it has a start trim so its subtitles or closed captions must be re-written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:667
+#: src/lib/dcp_content.cc:669
 msgid "it is 2K and the film is 4K."
 msgstr "является 2K, а проект - 4K."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:664
+#: src/lib/dcp_content.cc:666
 msgid "it is 4K and the film is 2K."
 msgstr "является 4K, а проект - 2K."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:598
+#: src/lib/dcp_content.cc:600
 msgid "it is Interop and the film is set to SMPTE."
 msgstr "является в Interop , а проект настроен как SMPTE."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:602
+#: src/lib/dcp_content.cc:604
 msgid "it is SMPTE and the film is set to Interop."
 msgstr "является SMPTE, а этот проект настроен как Interop."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:712
+#: src/lib/dcp_content.cc:714
 msgid "it overlaps other audio content; remove the other content."
 msgstr "перекрывает другой аудио-контент; уберите другой аудио-контент."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:770
+#: src/lib/dcp_content.cc:772
 msgid "it overlaps other text content; remove the other content."
 msgstr "перекрывает другой текстовый-контент; уберите другой контент."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:677
+#: src/lib/dcp_content.cc:679
 msgid "it overlaps other video content; remove the other content."
 msgstr "перекрывает другой видео-контент; уберите другой видео-контент."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:633
+#: src/lib/dcp_content.cc:635
 msgid ""
 "its reel lengths differ from those in the film; set the reel mode to 'split "
 "by video content'."
@@ -1984,12 +1991,12 @@ msgstr ""
 "бобины \"Разделять по видео-контенту\"."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:672
+#: src/lib/dcp_content.cc:674
 msgid "its video frame size differs from the film's."
 msgstr "размер кадра видео в проекте отличается от размера видео DCP."
 
 #. / TRANSLATORS: m here is an abbreviation for minutes
-#: src/lib/util.cc:209
+#: src/lib/util.cc:212
 msgid "m"
 msgstr "м"
 
@@ -1997,26 +2004,26 @@ msgstr "м"
 msgid "moving"
 msgstr "последовательность"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "name"
 msgstr "название"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:756
+#: src/lib/dcp_content.cc:758
 msgid ""
 "one of its closed caption has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:743
+#: src/lib/dcp_content.cc:745
 msgid ""
 "one of its subtitle reels has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: s here is an abbreviation for seconds
-#: src/lib/util.cc:219
+#: src/lib/util.cc:222
 msgid "s"
 msgstr "с"
 
@@ -2024,7 +2031,7 @@ msgstr "с"
 msgid "sRGB"
 msgstr "sRGB"
 
-#: src/lib/film.cc:402
+#: src/lib/film.cc:413
 msgid "some of your content is missing"
 msgstr "часть вашего контента отсутствует"
 
@@ -2036,7 +2043,7 @@ msgstr "статичный"
 msgid "unknown"
 msgstr "неизвестно"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "video frames"
 msgstr "видеокадры"
 
diff --git a/src/lib/po/sk_SK.po b/src/lib/po/sk_SK.po
index 2a3f25517..d7bcbcc84 100644
--- a/src/lib/po/sk_SK.po
+++ b/src/lib/po/sk_SK.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-08-20 23:10+0200\n"
+"POT-Creation-Date: 2021-10-17 15:26+0200\n"
 "PO-Revision-Date: 2016-01-06 00:23+0100\n"
 "Last-Translator: Tomáš Hlaváč\n"
 "Language-Team: \n"
@@ -18,7 +18,7 @@ msgstr ""
 "X-Generator: Poedit 1.8.6\n"
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
 
-#: src/lib/video_content.cc:486
+#: src/lib/video_content.cc:496
 #, fuzzy, c-format
 msgid ""
 "\n"
@@ -27,7 +27,7 @@ msgstr ""
 "\n"
 "Snímacia frekvencia obsahu %.4f\n"
 
-#: src/lib/video_content.cc:451
+#: src/lib/video_content.cc:461
 #, fuzzy
 msgid ""
 "\n"
@@ -36,7 +36,7 @@ msgstr ""
 "\n"
 "Zmenšené na %1x%2"
 
-#: src/lib/video_content.cc:444
+#: src/lib/video_content.cc:452
 #, fuzzy, c-format
 msgid ""
 "\n"
@@ -45,7 +45,7 @@ msgstr ""
 "\n"
 "Pomer strán displeja %.2f:1"
 
-#: src/lib/video_content.cc:474
+#: src/lib/video_content.cc:484
 #, fuzzy
 msgid ""
 "\n"
@@ -54,7 +54,7 @@ msgstr ""
 "\n"
 "Vyplnené čiernou, aby sa zmestil do kontajnera %1 (%2x%3)"
 
-#: src/lib/video_content.cc:464
+#: src/lib/video_content.cc:474
 #, fuzzy
 msgid ""
 "\n"
@@ -63,7 +63,7 @@ msgstr ""
 "\n"
 "Zmenšené na %1x%2"
 
-#: src/lib/video_content.cc:468 src/lib/video_content.cc:479
+#: src/lib/video_content.cc:478 src/lib/video_content.cc:489
 #, c-format
 msgid " (%.2f:1)"
 msgstr ""
@@ -100,7 +100,7 @@ msgstr ""
 msgid "%1 [Atmos]"
 msgstr "%1 [Atmos]"
 
-#: src/lib/dcp_content.cc:318
+#: src/lib/dcp_content.cc:320
 msgid "%1 [DCP]"
 msgstr "%1 [DCP]"
 
@@ -117,7 +117,7 @@ msgstr "%1 [video]"
 msgid "%1 [video]"
 msgstr "%1 [video]"
 
-#: src/lib/video_content.cc:439
+#: src/lib/video_content.cc:447
 #, fuzzy, c-format
 msgid ", pixel aspect ratio %.2f:1"
 msgstr ", pomer strán obrazových bodov %.2f:1"
@@ -168,7 +168,7 @@ msgstr ""
 msgid "3D denoiser"
 msgstr "3D denoiser"
 
-#: src/lib/hints.cc:212
+#: src/lib/hints.cc:209
 msgid ""
 "4K 3D is only supported by a very limited number of projectors.  Unless you "
 "know that you will play this DCP back on a capable projector, it is "
@@ -200,13 +200,20 @@ msgid ""
 "Paypal to donate €10</a></ul><p>Thank you!"
 msgstr ""
 
-#: src/lib/hints.cc:169
+#: src/lib/hints.cc:166
 msgid ""
 "A few projectors have problems playing back very high bit-rate DCPs.  It is "
 "a good idea to drop the JPEG2000 bandwidth down to about 200Mbit/s; this is "
 "unlikely to have any visible effect on the image."
 msgstr ""
 
+#: src/lib/text_content.cc:248
+msgid ""
+"A subtitle or closed caption file in this project is marked with the "
+"language '%1', which DCP-o-matic does not recognise.  The file's language "
+"has been cleared."
+msgstr ""
+
 #: src/lib/ffmpeg_content.cc:635
 msgid "ARIB STD-B67 ('Hybrid log-gamma')"
 msgstr ""
@@ -215,7 +222,7 @@ msgstr ""
 msgid "Advertisement"
 msgstr "Reklama"
 
-#: src/lib/hints.cc:146
+#: src/lib/hints.cc:143
 msgid ""
 "All of your content is in Scope (2.39:1) but your DCP's container is Flat "
 "(1.85:1).  This will letter-box your content inside a Flat (1.85:1) frame.  "
@@ -223,7 +230,7 @@ msgid ""
 "tab."
 msgstr ""
 
-#: src/lib/hints.cc:150
+#: src/lib/hints.cc:147
 msgid ""
 "All of your content narrower than 1.90:1 but your DCP's container is Scope "
 "(2.39:1).  This will pillar-box your content.  You may prefer to set your "
@@ -244,54 +251,54 @@ msgstr "Analyzovať zvuk"
 msgid "Analysing subtitles"
 msgstr "Hľadám titulky"
 
-#: src/lib/hints.cc:368
+#: src/lib/hints.cc:365
 msgid ""
 "At least one marker comes after the end of the project and will be ignored."
 msgstr ""
 
-#: src/lib/hints.cc:473
+#: src/lib/hints.cc:470
 msgid "At least one of your closed caption files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:466
+#: src/lib/hints.cc:463
 msgid "At least one of your closed caption files' XML part is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:481
+#: src/lib/hints.cc:478
 msgid "At least one of your subtitle files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:445
+#: src/lib/hints.cc:442
 msgid ""
 "At least one of your subtitle lines has more than 52 characters.  It is "
 "recommended to make each line 52 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:447
+#: src/lib/hints.cc:444
 msgid ""
 "At least one of your subtitle lines has more than 79 characters.  You should "
 "make each line 79 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:590
+#: src/lib/hints.cc:587
 msgid ""
 "At least one of your subtitles has more than 3 lines.  It is advisable to "
 "use no more than 3 lines."
 msgstr ""
 
-#: src/lib/hints.cc:580
+#: src/lib/hints.cc:577
 msgid ""
 "At least one of your subtitles lasts less than 15 frames.  It is advisable "
 "to make each subtitle at least 15 frames long."
 msgstr ""
 
-#: src/lib/hints.cc:585
+#: src/lib/hints.cc:582
 msgid ""
 "At least one of your subtitles starts less than 2 frames after the previous "
 "one.  It is advisable to make the gap between subtitles at least 2 frames."
 msgstr ""
 
-#: src/lib/hints.cc:633
+#: src/lib/hints.cc:630
 msgid ""
 "At least one piece of subtitle or closed caption content has no specified "
 "language.  It is advisable to set the language for each piece of subtitle or "
@@ -365,15 +372,15 @@ msgstr "Bitov na pixel"
 msgid "Bob Weaver Deinterlacing Filter"
 msgstr "Len ďalší deinterlacing filter"
 
-#: src/lib/util.cc:598
+#: src/lib/util.cc:601
 msgid "BsL"
 msgstr "BsL"
 
-#: src/lib/util.cc:599
+#: src/lib/util.cc:602
 msgid "BsR"
 msgstr "BsR"
 
-#: src/lib/util.cc:590
+#: src/lib/util.cc:593
 msgid "C"
 msgstr "C"
 
@@ -381,7 +388,7 @@ msgstr "C"
 msgid "Cancelled"
 msgstr "Zrušené"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 #, fuzzy
 msgid "Cannot contain slashes"
 msgstr "nemôže obsahovať lomky"
@@ -390,11 +397,11 @@ msgstr "nemôže obsahovať lomky"
 msgid "Cannot handle pixel format %1 during %2"
 msgstr "Nemôžem spracovať formát pixelu %1 počas %2"
 
-#: src/lib/film.cc:1662
+#: src/lib/film.cc:1711
 msgid "Cannot make a KDM as this project is not encrypted."
 msgstr ""
 
-#: src/lib/util.cc:559
+#: src/lib/util.cc:562
 msgid "Centre"
 msgstr "Center"
 
@@ -466,7 +473,7 @@ msgstr ""
 msgid "Computing digest"
 msgstr "Počítam zhrnutie"
 
-#: src/lib/writer.cc:535
+#: src/lib/writer.cc:531
 #, fuzzy
 msgid "Computing digests"
 msgstr "Počítam zhrnutie"
@@ -499,22 +506,22 @@ msgstr "Aby sa spojil obsah, musí mať rovnakú titulkovú X mierku. "
 msgid "Content to be joined must all have or not have video"
 msgstr "Aby sa spojil obsah, musí mať rovnaké miznutie."
 
-#: src/lib/text_content.cc:305
+#: src/lib/text_content.cc:320
 #, fuzzy
 msgid ""
 "Content to be joined must both be main subtitle languages or both additional."
 msgstr "Aby sa spojil obsah, musí mať rovnakú titulkovú X mierku. "
 
-#: src/lib/video_content.cc:207
+#: src/lib/video_content.cc:210
 #, fuzzy
 msgid "Content to be joined must have all its video used or not used."
 msgstr "Aby sa spojil obsah, musí mať rovnaký počet obrázkov za sekundu."
 
-#: src/lib/text_content.cc:260
+#: src/lib/text_content.cc:275
 msgid "Content to be joined must have the same 'burn subtitles' setting."
 msgstr "Aby sa spojil obsah, musí mať tie isté 'vypálené titulky' nastavenia."
 
-#: src/lib/text_content.cc:256
+#: src/lib/text_content.cc:271
 msgid "Content to be joined must have the same 'use subtitles' setting."
 msgstr "Aby sa spojil obsah, musí mať tie isté 'použiť titulky' nastavenia."
 
@@ -526,64 +533,64 @@ msgstr "Aby sa spojil obsah, musí mať to isté oneskorenie zvuku."
 msgid "Content to be joined must have the same audio gain."
 msgstr "Aby sa spojil obsah, musí mať tú istú hlasitosť zvuku."
 
-#: src/lib/video_content.cc:239
+#: src/lib/video_content.cc:242
 #, fuzzy
 msgid "Content to be joined must have the same burnt subtitle language."
 msgstr "Aby sa spojil obsah, musí mať tie isté 'vypálené titulky' nastavenia."
 
-#: src/lib/video_content.cc:231
+#: src/lib/video_content.cc:234
 msgid "Content to be joined must have the same colour conversion."
 msgstr "Aby sa spojil obsah, musí mať tú istú konverziu farieb."
 
-#: src/lib/video_content.cc:219
+#: src/lib/video_content.cc:222
 msgid "Content to be joined must have the same crop."
 msgstr "Aby sa spojil obsah, musí mať to isté orezanie."
 
-#: src/lib/video_content.cc:223
+#: src/lib/video_content.cc:226
 #, fuzzy
 msgid "Content to be joined must have the same custom ratio setting."
 msgstr "Aby sa spojil obsah, musí mať rovnaké nastavenia orezania."
 
-#: src/lib/video_content.cc:227
+#: src/lib/video_content.cc:230
 #, fuzzy
 msgid "Content to be joined must have the same custom size setting."
 msgstr "Aby sa spojil obsah, musí mať rovnaké nastavenia orezania."
 
-#: src/lib/video_content.cc:235
+#: src/lib/video_content.cc:238
 msgid "Content to be joined must have the same fades."
 msgstr "Aby sa spojil obsah, musí mať rovnaké miznutie."
 
-#: src/lib/text_content.cc:288
+#: src/lib/text_content.cc:303
 #, fuzzy
 msgid "Content to be joined must have the same outline width."
 msgstr "Aby sa spojil obsah, musí mať rovnakú titulkovú X mierku. "
 
-#: src/lib/video_content.cc:211
+#: src/lib/video_content.cc:214
 msgid "Content to be joined must have the same picture size."
 msgstr "Aby sa spojil obsah, musí mať rovnakú veľkosť obrazu."
 
-#: src/lib/text_content.cc:264
+#: src/lib/text_content.cc:279
 msgid "Content to be joined must have the same subtitle X offset."
 msgstr "Aby sa spojil obsah, musí mať rovnaký titulkový X offset. "
 
-#: src/lib/text_content.cc:272
+#: src/lib/text_content.cc:287
 msgid "Content to be joined must have the same subtitle X scale."
 msgstr "Aby sa spojil obsah, musí mať rovnakú titulkovú X mierku. "
 
-#: src/lib/text_content.cc:268
+#: src/lib/text_content.cc:283
 msgid "Content to be joined must have the same subtitle Y offset."
 msgstr "Aby sa spojil obsah, musí mať rovnaký titulkový Y offset."
 
-#: src/lib/text_content.cc:276
+#: src/lib/text_content.cc:291
 msgid "Content to be joined must have the same subtitle Y scale."
 msgstr "Aby sa spojil obsah, musí mať rovnakú titulkovú Y mierku."
 
-#: src/lib/text_content.cc:284
+#: src/lib/text_content.cc:299
 #, fuzzy
 msgid "Content to be joined must have the same subtitle fades."
 msgstr "Aby sa spojil obsah, musí mať rovnakú titulkovú X mierku. "
 
-#: src/lib/text_content.cc:280
+#: src/lib/text_content.cc:295
 #, fuzzy
 msgid "Content to be joined must have the same subtitle line spacing."
 msgstr "Aby sa spojil obsah, musí mať rovnakú titulkovú X mierku. "
@@ -593,16 +600,16 @@ msgstr "Aby sa spojil obsah, musí mať rovnakú titulkovú X mierku. "
 msgid "Content to be joined must have the same video frame rate"
 msgstr "Aby sa spojil obsah, musí mať rovnaký počet obrázkov za sekundu."
 
-#: src/lib/video_content.cc:215
+#: src/lib/video_content.cc:218
 msgid "Content to be joined must have the same video frame type."
 msgstr "Aby sa spojil obsah, musí mať rovnaký typ videa."
 
-#: src/lib/text_content.cc:297
+#: src/lib/text_content.cc:312
 #, fuzzy
 msgid "Content to be joined must use the same DCP track."
 msgstr "Aby sa spojil obsah, musí používať rovnaké písma."
 
-#: src/lib/text_content.cc:293 src/lib/text_content.cc:313
+#: src/lib/text_content.cc:308 src/lib/text_content.cc:328
 msgid "Content to be joined must use the same fonts."
 msgstr "Aby sa spojil obsah, musí používať rovnaké písma."
 
@@ -610,12 +617,12 @@ msgstr "Aby sa spojil obsah, musí používať rovnaké písma."
 msgid "Content to be joined must use the same subtitle stream."
 msgstr "Aby sa spojil obsah, musí používať rovnaký titulkový stream."
 
-#: src/lib/text_content.cc:301
+#: src/lib/text_content.cc:316
 #, fuzzy
 msgid "Content to be joined must use the same text language."
 msgstr "Aby sa spojil obsah, musí používať rovnaké písma."
 
-#: src/lib/video_content.cc:430
+#: src/lib/video_content.cc:438
 msgid "Content video is %1x%2"
 msgstr "Video je %1x%2"
 
@@ -640,7 +647,7 @@ msgstr "Nemôžem sa pripojiť k serveru %1 (%2)"
 msgid "Could not create remote directory %1 (%2)"
 msgstr "Nemôžem vytvoriť vzdialený priečinok %1 (%2)"
 
-#: src/lib/image_examiner.cc:65
+#: src/lib/image_examiner.cc:64
 msgid "Could not decode JPEG2000 file %1 (%2)"
 msgstr "Nemôžem dekódovať JPEG2000 súbor %1 (%2)"
 
@@ -679,7 +686,7 @@ msgstr "Nemôžem otvoriť ZIP súbor"
 msgid "Could not open file for writing"
 msgstr "Datei konnte nicht zum Lesen geöffnet werden."
 
-#: src/lib/ffmpeg_file_encoder.cc:269
+#: src/lib/ffmpeg_file_encoder.cc:265
 #, fuzzy
 msgid "Could not open output file %1 (%2)"
 msgstr "nemôžem zapisovať do súboru %1 (%2)"
@@ -697,19 +704,19 @@ msgstr "Nemôžem začať prenos"
 msgid "Could not write to remote file (%1)"
 msgstr "Nemôžem zapisovať do vzdialeného súboru (%1)"
 
-#: src/lib/util.cc:569
+#: src/lib/util.cc:572
 msgid "D-BOX primary"
 msgstr "D-BOX primárne"
 
-#: src/lib/util.cc:570
+#: src/lib/util.cc:573
 msgid "D-BOX secondary"
 msgstr "D-BOX sekundárne"
 
-#: src/lib/util.cc:600
+#: src/lib/util.cc:603
 msgid "DBP"
 msgstr "DBP"
 
-#: src/lib/util.cc:601
+#: src/lib/util.cc:604
 msgid "DBS"
 msgstr "DBS"
 
@@ -723,7 +730,7 @@ msgstr "Flat"
 msgid "DCI Scope"
 msgstr "Scope (2.39:1)"
 
-#: src/lib/dcp_subtitle_content.cc:103
+#: src/lib/dcp_subtitle_content.cc:104
 msgid "DCP XML subtitles"
 msgstr "DCP XML titulky"
 
@@ -750,13 +757,13 @@ msgstr ""
 "DCP-o-matic nemohol otvoriť %1.  Možno, že súbor neexistuje alebo nie je "
 "podporovaný."
 
-#: src/lib/film.cc:1565
+#: src/lib/film.cc:1614
 msgid ""
 "DCP-o-matic had to change your settings for referring to DCPs as OV.  Please "
 "review those settings to make sure they are what you want."
 msgstr ""
 
-#: src/lib/film.cc:1533
+#: src/lib/film.cc:1582
 msgid ""
 "DCP-o-matic had to change your settings so that the film's frame rate is the "
 "same as that of your Atmos content."
@@ -767,7 +774,7 @@ msgid ""
 "DCP-o-matic no longer supports the `%1' filter, so it has been turned off."
 msgstr "DCP-o-matic nepodporuje `%1' filter, takže filter bude vypnutý."
 
-#: src/lib/config.cc:359 src/lib/config.cc:1114
+#: src/lib/config.cc:357 src/lib/config.cc:1114
 msgid "DCP-o-matic notification"
 msgstr ""
 
@@ -862,7 +869,7 @@ msgstr "Chyba v SubRip súbore: videný %1 a bol očakávaný %2"
 msgid "Error: %1"
 msgstr "Chyba: %1"
 
-#: src/lib/hints.cc:408
+#: src/lib/hints.cc:405
 msgid "Examining audio, subtitles and closed captions"
 msgstr ""
 
@@ -876,7 +883,7 @@ msgstr "Vypočítavam obsah"
 msgid "Examining subtitles"
 msgstr "Hľadám titulky"
 
-#: src/lib/hints.cc:406
+#: src/lib/hints.cc:403
 #, fuzzy
 msgid "Examining subtitles and closed captions"
 msgstr "Hľadám titulky"
@@ -908,7 +915,7 @@ msgstr "Chyba pri posielaní emailu (%1)"
 msgid "Feature"
 msgstr "Feature"
 
-#: src/lib/content.cc:464
+#: src/lib/content.cc:468
 #, fuzzy
 msgid "Filename"
 msgstr "meno"
@@ -922,12 +929,12 @@ msgstr "Film"
 msgid "Finding length"
 msgstr "Dĺžka videa"
 
-#: src/lib/content.cc:471
+#: src/lib/content.cc:475
 #, fuzzy
 msgid "Frame rate"
 msgstr "Frame rate videa (počet obrázkov za sekundu)"
 
-#: src/lib/util.cc:943
+#: src/lib/util.cc:946
 msgid "Friday"
 msgstr "Piatok"
 
@@ -972,11 +979,11 @@ msgstr "Gamma 28 (BT470BG)"
 msgid "Gradient debander"
 msgstr "Gradient debander"
 
-#: src/lib/util.cc:594
+#: src/lib/util.cc:597
 msgid "HI"
 msgstr "HI"
 
-#: src/lib/util.cc:563
+#: src/lib/util.cc:566
 msgid "Hearing impaired"
 msgstr "Sluchovo postihnutý(í)"
 
@@ -1001,18 +1008,18 @@ msgstr "IEC61966-2-1 (sRGB alebo sYCC)"
 msgid "IEC61966-2-4"
 msgstr "IEC61966-2-4"
 
-#: src/lib/hints.cc:188
+#: src/lib/hints.cc:185
 msgid "If you do use 25fps you should change your DCP standard to SMPTE."
 msgstr ""
 
-#: src/lib/hints.cc:251
+#: src/lib/hints.cc:248
 msgid ""
 "In general it is now advisable to make SMPTE DCPs unless you have a "
 "particular reason to use Interop.  You are advised to set your DCP to use "
 "the SMPTE standard in the \"DCP\" tab."
 msgstr ""
 
-#: src/lib/hints.cc:573
+#: src/lib/hints.cc:570
 msgid ""
 "It is advisable to put your first subtitle at least 4 seconds after the "
 "start of the DCP to make sure it is seen."
@@ -1026,7 +1033,7 @@ msgstr "Neviem, čo zapríčinilo túto chybu."
 msgid "JEDEC P22"
 msgstr ""
 
-#: src/lib/config.cc:349 src/lib/config.cc:1099
+#: src/lib/config.cc:347 src/lib/config.cc:1099
 msgid "KDM delivery: $CPL_NAME"
 msgstr "KDM donáška: $CPL_NAME"
 
@@ -1034,39 +1041,39 @@ msgstr "KDM donáška: $CPL_NAME"
 msgid "Kernel deinterlacer"
 msgstr "Kernel deinterlacer"
 
-#: src/lib/ffmpeg_encoder.cc:251 src/lib/util.cc:588
+#: src/lib/ffmpeg_encoder.cc:253 src/lib/util.cc:591
 msgid "L"
 msgstr "L"
 
-#: src/lib/util.cc:596
+#: src/lib/util.cc:599
 msgid "Lc"
 msgstr "Lc"
 
-#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:557
+#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:560
 msgid "Left"
 msgstr "Left (Ľavá)"
 
-#: src/lib/util.cc:565
+#: src/lib/util.cc:568
 msgid "Left centre"
 msgstr "Left centre (Ľavý stred)"
 
-#: src/lib/util.cc:567
+#: src/lib/util.cc:570
 msgid "Left rear surround"
 msgstr "Left rear surround (Ľavý zadný priestorový)"
 
-#: src/lib/util.cc:561
+#: src/lib/util.cc:564
 msgid "Left surround"
 msgstr "Left surround (Ľavý zadný)"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "Length"
 msgstr ""
 
-#: src/lib/util.cc:591
+#: src/lib/util.cc:594
 msgid "Lfe"
 msgstr "Lfe"
 
-#: src/lib/util.cc:560
+#: src/lib/util.cc:563
 msgid "Lfe (sub)"
 msgstr "Lfe (Subwoofer)"
 
@@ -1090,11 +1097,11 @@ msgstr "Logarmitmický (rozsah 100:1)"
 msgid "Logarithmic (316:1 range)"
 msgstr "Logarmitmický (rozsah 316:1 )"
 
-#: src/lib/exceptions.cc:145
+#: src/lib/exceptions.cc:152
 msgid "Lost communication between main and writer processes"
 msgstr ""
 
-#: src/lib/util.cc:592
+#: src/lib/util.cc:595
 msgid "Ls"
 msgstr "Ls"
 
@@ -1106,19 +1113,19 @@ msgstr "Mid-side dekóder"
 msgid "Misc"
 msgstr "Rôzne"
 
-#: src/lib/dcp_examiner.cc:164
+#: src/lib/dcp_examiner.cc:175
 msgid "Mismatched audio channel counts in DCP"
 msgstr "Počet zvukových kanálov sa nezhoduje v DCP"
 
-#: src/lib/dcp_examiner.cc:170
+#: src/lib/dcp_examiner.cc:181
 msgid "Mismatched audio sample rates in DCP"
 msgstr "Vzorkovací kmitočet zvuku sa nezhoduje v DCP"
 
-#: src/lib/dcp_examiner.cc:137
+#: src/lib/dcp_examiner.cc:145
 msgid "Mismatched frame rates in DCP"
 msgstr "Nezhoduje sa počet obrázkov za sekundu v DPC"
 
-#: src/lib/dcp_examiner.cc:145
+#: src/lib/dcp_examiner.cc:153
 msgid "Mismatched video sizes in DCP"
 msgstr "Nehoduje sa veľkosť videa v DCO"
 
@@ -1127,11 +1134,11 @@ msgstr "Nehoduje sa veľkosť videa v DCO"
 msgid "Missing required setting %1"
 msgstr "chýbajúce potrebné nastavenia %1"
 
-#: src/lib/util.cc:935
+#: src/lib/util.cc:938
 msgid "Monday"
 msgstr "Pondelok"
 
-#: src/lib/writer.cc:763
+#: src/lib/writer.cc:759
 msgid "Mono"
 msgstr ""
 
@@ -1155,7 +1162,7 @@ msgstr "Žiadne platné súbory nebolo nájdené v priečinku."
 msgid "Noise reduction"
 msgstr "Redukcia hluku"
 
-#: src/lib/writer.cc:731 src/lib/writer.cc:738 src/lib/writer.cc:761
+#: src/lib/writer.cc:727 src/lib/writer.cc:734 src/lib/writer.cc:757
 msgid "None"
 msgstr ""
 
@@ -1193,7 +1200,7 @@ msgstr "Overcomplete wavelet denoiser"
 msgid "P3"
 msgstr "P3"
 
-#: src/lib/util.h:59
+#: src/lib/util.h:64
 msgid ""
 "Please report this problem by using Help -> Report a problem or via email to "
 "carl@dcpomatic.com"
@@ -1203,7 +1210,7 @@ msgstr ""
 msgid "Policy"
 msgstr "Policy"
 
-#: src/lib/content.cc:480
+#: src/lib/content.cc:484
 msgid "Prepared for video frame rate"
 msgstr ""
 
@@ -1220,7 +1227,7 @@ msgstr ""
 msgid "Public Service Announcement"
 msgstr "Public Service Announcement (Verejné oznámenie služby)"
 
-#: src/lib/ffmpeg_encoder.cc:256 src/lib/util.cc:589
+#: src/lib/ffmpeg_encoder.cc:258 src/lib/util.cc:592
 msgid "R"
 msgstr "R"
 
@@ -1232,7 +1239,7 @@ msgstr "RGB / sRGB (IEC61966-2-1)"
 msgid "Rating"
 msgstr "Prístupnosť"
 
-#: src/lib/util.cc:597
+#: src/lib/util.cc:600
 msgid "Rc"
 msgstr "Rc"
 
@@ -1254,19 +1261,19 @@ msgstr "Rec. 601 (SD)"
 msgid "Rec. 709"
 msgstr "Rec. 709 (HD)"
 
-#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:558
+#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:561
 msgid "Right"
 msgstr "Right (Pravý)"
 
-#: src/lib/util.cc:566
+#: src/lib/util.cc:569
 msgid "Right centre"
 msgstr "Right centre (Pravý stredný)"
 
-#: src/lib/util.cc:568
+#: src/lib/util.cc:571
 msgid "Right rear surround"
 msgstr "Right rear surround (Pravý zadný priestorový)"
 
-#: src/lib/util.cc:562
+#: src/lib/util.cc:565
 msgid "Right surround"
 msgstr "Right surround (Pravý priestorový)"
 
@@ -1278,7 +1285,7 @@ msgstr ""
 msgid "Rotate 90 degrees clockwise"
 msgstr ""
 
-#: src/lib/util.cc:593
+#: src/lib/util.cc:596
 msgid "Rs"
 msgstr "Rs"
 
@@ -1303,7 +1310,7 @@ msgstr ""
 msgid "SMPTE 240M"
 msgstr "SMPTE 240M"
 
-#: src/lib/hints.cc:615
+#: src/lib/hints.cc:612
 msgid ""
 "SMPTE DCPs with the type FTR (feature) should have markers for the first "
 "frame of end credits (FFEC) and the first frame of moving credits (FFMC).  "
@@ -1342,7 +1349,7 @@ msgstr "SSH chyba (%1)"
 msgid "SSH error [%1] (%2)"
 msgstr "SSH chyba (%1)"
 
-#: src/lib/util.cc:945
+#: src/lib/util.cc:948
 msgid "Saturday"
 msgstr "Sobota"
 
@@ -1359,11 +1366,11 @@ msgstr "Posielam email"
 msgid "Short"
 msgstr "Short (Krátky film)"
 
-#: src/lib/util.cc:602
+#: src/lib/util.cc:605
 msgid "Sign"
 msgstr ""
 
-#: src/lib/video_content.cc:500
+#: src/lib/video_content.cc:510
 msgid "Size"
 msgstr ""
 
@@ -1384,28 +1391,28 @@ msgid ""
 "project in DCP-o-matic, check the settings, then save it before trying again."
 msgstr ""
 
-#: src/lib/hints.cc:554
+#: src/lib/hints.cc:551
 msgid ""
 "Some of your closed captions span more than %1 lines, so they will be "
 "truncated."
 msgstr ""
 
-#: src/lib/hints.cc:653
+#: src/lib/hints.cc:650
 msgid ""
 "Some of your content has audio but you have not set the audio language.  It "
 "is advisable to set the audio language in the \"DCP\" tab unless your audio "
 "has no spoken parts."
 msgstr ""
 
-#: src/lib/film.cc:406
+#: src/lib/film.cc:417
 msgid "Some of your content needs a KDM"
 msgstr ""
 
-#: src/lib/film.cc:409
+#: src/lib/film.cc:420
 msgid "Some of your content needs an OV"
 msgstr ""
 
-#: src/lib/writer.cc:765
+#: src/lib/writer.cc:761
 msgid "Stereo"
 msgstr ""
 
@@ -1417,7 +1424,7 @@ msgstr "Stereo na 5.1 up-mixer A"
 msgid "Stereo to 5.1 up-mixer B"
 msgstr "Stereo na  5.1 up-mixer B"
 
-#: src/lib/util.cc:933
+#: src/lib/util.cc:936
 msgid "Sunday"
 msgstr "Nedel'a"
 
@@ -1438,7 +1445,7 @@ msgstr "Test"
 msgid "Text subtitles"
 msgstr "[titulky]"
 
-#: src/lib/film.cc:389
+#: src/lib/film.cc:400
 msgid "The DCP is empty, perhaps because all the content has zero length."
 msgstr ""
 
@@ -1451,7 +1458,7 @@ msgstr "Reťaz certifikátov pre podpisovanie je neplatná"
 msgid "The certificate chain for signing is invalid (%1)"
 msgstr "Reťaz certifikátov pre podpisovanie je neplatná"
 
-#: src/lib/video_decoder.cc:86
+#: src/lib/video_decoder.cc:81
 msgid ""
 "The content file %1 is set as 3D but does not appear to contain 3D images.  "
 "Please set it to 2D.  You can still make a 3D DCP from this content by "
@@ -1482,7 +1489,7 @@ msgstr ""
 msgid "The file %1 has been trimmed by %2 milliseconds more."
 msgstr ""
 
-#: src/lib/hints.cc:241
+#: src/lib/hints.cc:238
 msgid ""
 "There is a large difference between the frame rate of your DCP and that of "
 "some of your content.  This will cause your audio to play back at a much "
@@ -1491,7 +1498,7 @@ msgid ""
 "systems support your chosen DCP rate."
 msgstr ""
 
-#: src/lib/dcp_content.cc:657
+#: src/lib/dcp_content.cc:659
 msgid "There is no video in this DCP"
 msgstr ""
 
@@ -1504,11 +1511,11 @@ msgstr ""
 "Zostáva málo pamäte. Ak je váš operačný system 32-bitový, skúste znížiť "
 "počet enkódovacích threadov v záložke Všeobecné, v nastaveniach."
 
-#: src/lib/util.cc:1146
+#: src/lib/util.cc:1150
 msgid "This KDM was made for DCP-o-matic but not for its leaf certificate."
 msgstr ""
 
-#: src/lib/util.cc:1144
+#: src/lib/util.cc:1148
 msgid "This KDM was not made for DCP-o-matic's decryption certificate."
 msgstr ""
 
@@ -1533,7 +1540,7 @@ msgid ""
 "the content and choosing \"Add KDM\"."
 msgstr ""
 
-#: src/lib/film.cc:581
+#: src/lib/film.cc:595
 msgid ""
 "This film was created with a newer version of DCP-o-matic, and it cannot be "
 "loaded into this version.  Sorry!"
@@ -1541,7 +1548,7 @@ msgstr ""
 "Tento film bol vytvorený novšou verziou DCP-o-matic, a nemôže byť načítaný "
 "touto verziou. Prepáčte !"
 
-#: src/lib/film.cc:566
+#: src/lib/film.cc:580
 msgid ""
 "This film was created with an older version of DCP-o-matic, and "
 "unfortunately it cannot be loaded into this version.  You will need to "
@@ -1551,7 +1558,7 @@ msgstr ""
 "načítaný do tejto verzie. Budete musieť vytvoriť nový Film, znovu pridať váš "
 "obsah a znovu to nastaviť."
 
-#: src/lib/util.cc:941
+#: src/lib/util.cc:944
 msgid "Thursday"
 msgstr "Četrtek"
 
@@ -1572,7 +1579,7 @@ msgstr "Transkódovanie %1"
 msgid "Transitional"
 msgstr "Transitional (Prechod)"
 
-#: src/lib/util.cc:937
+#: src/lib/util.cc:940
 msgid "Tuesday"
 msgstr "Utorok"
 
@@ -1597,7 +1604,7 @@ msgstr "neznáme"
 msgid "Unknown error"
 msgstr "Neznáma chyba"
 
-#: src/lib/ffmpeg_decoder.cc:343
+#: src/lib/ffmpeg_decoder.cc:339
 msgid "Unrecognised audio sample format (%1)"
 msgstr "Nerozpoznaná vzorkovacia frekvencia audia (%1)"
 
@@ -1617,7 +1624,7 @@ msgstr "Nešpecifikované"
 msgid "Untitled"
 msgstr "Nepomenované"
 
-#: src/lib/util.cc:571 src/lib/util.cc:572
+#: src/lib/util.cc:574 src/lib/util.cc:575
 msgid "Unused"
 msgstr "Nepoužité"
 
@@ -1629,7 +1636,7 @@ msgstr "Upmix L"
 msgid "Upmix R"
 msgstr "Upmix R"
 
-#: src/lib/util.cc:595
+#: src/lib/util.cc:598
 msgid "VI"
 msgstr "VI"
 
@@ -1641,7 +1648,7 @@ msgstr ""
 msgid "Vertical flip"
 msgstr ""
 
-#: src/lib/util.cc:564
+#: src/lib/util.cc:567
 msgid "Visually impaired"
 msgstr "Zrakovo postihnutý(í)"
 
@@ -1654,7 +1661,7 @@ msgstr "Čakám"
 msgid "Weave filter"
 msgstr "Telecine Filter"
 
-#: src/lib/util.cc:939
+#: src/lib/util.cc:942
 msgid "Wednesday"
 msgstr "Streda"
 
@@ -1666,69 +1673,69 @@ msgstr "YCOCG"
 msgid "Yet Another Deinterlacing Filter"
 msgstr "Len ďalší deinterlacing filter"
 
-#: src/lib/hints.cc:201
+#: src/lib/hints.cc:198
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You are advised to change the DCP frame rate "
 "to %2 fps."
 msgstr ""
 
-#: src/lib/hints.cc:185
+#: src/lib/hints.cc:182
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You may want to consider changing your frame "
 "rate to %2 fps."
 msgstr ""
 
-#: src/lib/hints.cc:195
+#: src/lib/hints.cc:192
 msgid ""
 "You are set up for a DCP frame rate of 30fps, which is not supported by all "
 "projectors.  Be aware that you may have compatibility problems."
 msgstr ""
 
-#: src/lib/hints.cc:306
+#: src/lib/hints.cc:303
 msgid ""
 "You are using 3D content but your DCP is set to 2D.  Set the DCP to 3D if "
 "you want to play it back on a 3D system (e.g. Real-D, MasterImage etc.)"
 msgstr ""
 
-#: src/lib/hints.cc:122
+#: src/lib/hints.cc:119
 msgid ""
 "You are using DCP-o-matic's stereo-to-5.1 upmixer.  This is experimental and "
 "may result in poor-quality audio.  If you continue, you should listen to the "
 "resulting DCP in a cinema to make sure that it sounds good."
 msgstr ""
 
-#: src/lib/hints.cc:290
+#: src/lib/hints.cc:287
 msgid ""
 "You have %1 files that look like they are VOB files from DVD. You should "
 "join them to ensure smooth joins between the files."
 msgstr ""
 
-#: src/lib/film.cc:1529
+#: src/lib/film.cc:1578
 msgid ""
 "You have more than one piece of Atmos content, and they do not have the same "
 "frame rate.  You must remove some Atmos content."
 msgstr ""
 
-#: src/lib/hints.cc:561
+#: src/lib/hints.cc:558
 msgid ""
 "You have overlapping closed captions, which are not allowed in Interop "
 "DCPs.  Change your DCP standard to SMPTE."
 msgstr ""
 
-#: src/lib/hints.cc:274
+#: src/lib/hints.cc:271
 msgid ""
 "You have specified a font file which is larger than 640kB.  This is very "
 "likely to cause problems on playback."
 msgstr ""
 
-#: src/lib/film.cc:385
+#: src/lib/film.cc:396
 #, fuzzy
 msgid "You must add some content to the DCP before creating it"
 msgstr "Musíte pridať obsah do DCP pred tým, ako ho vytvoríte"
 
-#: src/lib/hints.cc:112
+#: src/lib/hints.cc:109
 msgid ""
 "Your DCP has fewer than 6 audio channels.  This may cause problems on some "
 "projectors.  You may want to set the DCP to have 6 channels.  It does not "
@@ -1736,19 +1743,19 @@ msgid ""
 "extras with silence."
 msgstr ""
 
-#: src/lib/hints.cc:160
+#: src/lib/hints.cc:157
 msgid ""
 "Your DCP uses an unusual container ratio.  This may cause problems on some "
 "projectors.  If possible, use Flat or Scope for the DCP container ratio."
 msgstr ""
 
-#: src/lib/hints.cc:340
+#: src/lib/hints.cc:337
 msgid ""
 "Your audio level is very high (on %1).  You should reduce the gain of your "
 "audio content."
 msgstr ""
 
-#: src/lib/config.cc:289
+#: src/lib/config.cc:287
 msgid ""
 "Your default container is not valid and has been changed to Flat (1.85:1)"
 msgstr ""
@@ -1772,7 +1779,7 @@ msgstr "[presúvam obrázky]"
 msgid "[still]"
 msgstr "[stále]"
 
-#: src/lib/dcp_subtitle_content.cc:97 src/lib/string_text_file_content.cc:78
+#: src/lib/dcp_subtitle_content.cc:98 src/lib/string_text_file_content.cc:78
 msgid "[subtitles]"
 msgstr "[titulky]"
 
@@ -1790,11 +1797,11 @@ msgstr "spojenie vypršalo"
 msgid "connecting"
 msgstr "pripájam"
 
-#: src/lib/film.cc:381
+#: src/lib/film.cc:392
 msgid "container"
 msgstr "kontajner"
 
-#: src/lib/film.cc:393
+#: src/lib/film.cc:404
 msgid "content type"
 msgstr "typ obsahu"
 
@@ -1850,84 +1857,84 @@ msgstr "chyba počas  async_read (%1)"
 msgid "error during async_write (%1)"
 msgstr "chyba počas  async_write (%1)"
 
-#: src/lib/content.cc:473 src/lib/content.cc:482
+#: src/lib/content.cc:477 src/lib/content.cc:486
 msgid "frames per second"
 msgstr "obrázky za sekundu"
 
 #. / TRANSLATORS: h here is an abbreviation for hours
-#: src/lib/util.cc:200
+#: src/lib/util.cc:203
 msgid "h"
 msgstr "h"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:750
+#: src/lib/dcp_content.cc:752
 #, fuzzy
 msgid "it does not have closed captions in all its reels."
 msgstr "DCP nemá zvuk vo všetkých reeloch."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:739
+#: src/lib/dcp_content.cc:741
 #, fuzzy
 msgid "it does not have open subtitles in all its reels."
 msgstr "DCP nemá titulky vo všetkých reeloch."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:706
+#: src/lib/dcp_content.cc:708
 #, fuzzy
 msgid "it does not have sound in all its reels."
 msgstr "DCP nemá zvuk vo všetkých reeloch."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:610
+#: src/lib/dcp_content.cc:612
 msgid "it has a different frame rate to the film."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:765
+#: src/lib/dcp_content.cc:767
 msgid ""
 "it has a start trim so its subtitles or closed captions must be re-written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:667
+#: src/lib/dcp_content.cc:669
 msgid "it is 2K and the film is 4K."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:664
+#: src/lib/dcp_content.cc:666
 msgid "it is 4K and the film is 2K."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:598
+#: src/lib/dcp_content.cc:600
 msgid "it is Interop and the film is set to SMPTE."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:602
+#: src/lib/dcp_content.cc:604
 msgid "it is SMPTE and the film is set to Interop."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:712
+#: src/lib/dcp_content.cc:714
 #, fuzzy
 msgid "it overlaps other audio content; remove the other content."
 msgstr "Už sa tu nachádza iný zvuk, ktorý sa prekrýva s DCP; zmaže ho."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:770
+#: src/lib/dcp_content.cc:772
 #, fuzzy
 msgid "it overlaps other text content; remove the other content."
 msgstr "Už sa tu nachádza iné video, ktoré sa prekrýva s DCP; zmaže ho."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:677
+#: src/lib/dcp_content.cc:679
 #, fuzzy
 msgid "it overlaps other video content; remove the other content."
 msgstr "Už sa tu nachádza iné video, ktoré sa prekrýva s DCP; zmaže ho."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:633
+#: src/lib/dcp_content.cc:635
 #, fuzzy
 msgid ""
 "its reel lengths differ from those in the film; set the reel mode to 'split "
@@ -1937,12 +1944,12 @@ msgstr ""
 "podľa obsahu videa'."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:672
+#: src/lib/dcp_content.cc:674
 msgid "its video frame size differs from the film's."
 msgstr ""
 
 #. / TRANSLATORS: m here is an abbreviation for minutes
-#: src/lib/util.cc:209
+#: src/lib/util.cc:212
 msgid "m"
 msgstr "m"
 
@@ -1950,26 +1957,26 @@ msgstr "m"
 msgid "moving"
 msgstr "presúvam"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "name"
 msgstr "meno"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:756
+#: src/lib/dcp_content.cc:758
 msgid ""
 "one of its closed caption has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:743
+#: src/lib/dcp_content.cc:745
 msgid ""
 "one of its subtitle reels has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: s here is an abbreviation for seconds
-#: src/lib/util.cc:219
+#: src/lib/util.cc:222
 msgid "s"
 msgstr "s"
 
@@ -1977,7 +1984,7 @@ msgstr "s"
 msgid "sRGB"
 msgstr "sRGB"
 
-#: src/lib/film.cc:402
+#: src/lib/film.cc:413
 msgid "some of your content is missing"
 msgstr ""
 
@@ -1989,7 +1996,7 @@ msgstr "stále"
 msgid "unknown"
 msgstr "neznáme"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "video frames"
 msgstr "video snímky"
 
diff --git a/src/lib/po/sv_SE.po b/src/lib/po/sv_SE.po
index 6abaf39dd..5a1bb91e0 100644
--- a/src/lib/po/sv_SE.po
+++ b/src/lib/po/sv_SE.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: DCP-o-matic\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-08-20 23:10+0200\n"
+"POT-Creation-Date: 2021-10-17 15:26+0200\n"
 "PO-Revision-Date: 2021-05-28 15:39+0200\n"
 "Last-Translator: Mattias Mattsson <vitplister@gmail.com>\n"
 "Language-Team: \n"
@@ -17,7 +17,7 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "X-Generator: Poedit 2.3\n"
 
-#: src/lib/video_content.cc:486
+#: src/lib/video_content.cc:496
 #, c-format
 msgid ""
 "\n"
@@ -26,7 +26,7 @@ msgstr ""
 "\n"
 "Källmaterialets bildhastighet är %.4f\n"
 
-#: src/lib/video_content.cc:451
+#: src/lib/video_content.cc:461
 msgid ""
 "\n"
 "Cropped to %1x%2"
@@ -34,7 +34,7 @@ msgstr ""
 "\n"
 "Beskuren till %1x%2"
 
-#: src/lib/video_content.cc:444
+#: src/lib/video_content.cc:452
 #, c-format
 msgid ""
 "\n"
@@ -43,7 +43,7 @@ msgstr ""
 "\n"
 "Bildformat %.2f:1"
 
-#: src/lib/video_content.cc:474
+#: src/lib/video_content.cc:484
 msgid ""
 "\n"
 "Padded with black to fit container %1 (%2x%3)"
@@ -51,7 +51,7 @@ msgstr ""
 "\n"
 "Svarta kanter tillagda för att passa %1-behållaren (%2x%3)"
 
-#: src/lib/video_content.cc:464
+#: src/lib/video_content.cc:474
 msgid ""
 "\n"
 "Scaled to %1x%2"
@@ -59,7 +59,7 @@ msgstr ""
 "\n"
 "Skalat till %1x%2"
 
-#: src/lib/video_content.cc:468 src/lib/video_content.cc:479
+#: src/lib/video_content.cc:478 src/lib/video_content.cc:489
 #, c-format
 msgid " (%.2f:1)"
 msgstr " (%.2f:1)"
@@ -104,7 +104,7 @@ msgstr "%1 (%2 GB) [%3]"
 msgid "%1 [Atmos]"
 msgstr "%1 [Atmos]"
 
-#: src/lib/dcp_content.cc:318
+#: src/lib/dcp_content.cc:320
 msgid "%1 [DCP]"
 msgstr "%1 [DCP]"
 
@@ -120,7 +120,7 @@ msgstr "%1 [film]"
 msgid "%1 [video]"
 msgstr "%1 [bild]"
 
-#: src/lib/video_content.cc:439
+#: src/lib/video_content.cc:447
 #, c-format
 msgid ", pixel aspect ratio %.2f:1"
 msgstr ", pixlarnas höjd/bredd-förhållande %.2f:1"
@@ -169,7 +169,7 @@ msgstr "2,39 (Scope)"
 msgid "3D denoiser"
 msgstr "3D brusreducering"
 
-#: src/lib/hints.cc:212
+#: src/lib/hints.cc:209
 msgid ""
 "4K 3D is only supported by a very limited number of projectors.  Unless you "
 "know that you will play this DCP back on a capable projector, it is "
@@ -215,7 +215,7 @@ msgstr ""
 "a><li><a href=\"https://dcpomatic.com/donate_amount?amount=10\">Ge 10 EUR "
 "via Paypal</a></ul><p>Stort tack!"
 
-#: src/lib/hints.cc:169
+#: src/lib/hints.cc:166
 msgid ""
 "A few projectors have problems playing back very high bit-rate DCPs.  It is "
 "a good idea to drop the JPEG2000 bandwidth down to about 200Mbit/s; this is "
@@ -225,6 +225,13 @@ msgstr ""
 "Rekommenderat är en JPEG2000-bitrate på ungefär 200 Mbit/s; detta ger "
 "troligen ingen synbar försämring av bildkvaliteten."
 
+#: src/lib/text_content.cc:248
+msgid ""
+"A subtitle or closed caption file in this project is marked with the "
+"language '%1', which DCP-o-matic does not recognise.  The file's language "
+"has been cleared."
+msgstr ""
+
 #: src/lib/ffmpeg_content.cc:635
 msgid "ARIB STD-B67 ('Hybrid log-gamma')"
 msgstr "ARIB STD-B67 ('Hybrid log-gamma')"
@@ -233,7 +240,7 @@ msgstr "ARIB STD-B67 ('Hybrid log-gamma')"
 msgid "Advertisement"
 msgstr "Advertisement"
 
-#: src/lib/hints.cc:146
+#: src/lib/hints.cc:143
 msgid ""
 "All of your content is in Scope (2.39:1) but your DCP's container is Flat "
 "(1.85:1).  This will letter-box your content inside a Flat (1.85:1) frame.  "
@@ -245,7 +252,7 @@ msgstr ""
 "upp- och nertill inuti en 1,85:1-ruta. Rekommenderat är att istället välja "
 "DCP-behållare Scope (2.39:1) på \"DCP\"-fliken."
 
-#: src/lib/hints.cc:150
+#: src/lib/hints.cc:147
 msgid ""
 "All of your content narrower than 1.90:1 but your DCP's container is Scope "
 "(2.39:1).  This will pillar-box your content.  You may prefer to set your "
@@ -268,26 +275,26 @@ msgstr "Analyserar ljud"
 msgid "Analysing subtitles"
 msgstr "Analyserar undertexter"
 
-#: src/lib/hints.cc:368
+#: src/lib/hints.cc:365
 msgid ""
 "At least one marker comes after the end of the project and will be ignored."
 msgstr ""
 "Åtminstone en markering kommer efter slutet av projektet och kommer att "
 "ignoreras."
 
-#: src/lib/hints.cc:473
+#: src/lib/hints.cc:470
 msgid "At least one of your closed caption files is larger than "
 msgstr "Åtminstone en av dina undertextfiler är större än "
 
-#: src/lib/hints.cc:466
+#: src/lib/hints.cc:463
 msgid "At least one of your closed caption files' XML part is larger than "
 msgstr "Åtminstone en av dina undertextfilers XML-del är större än "
 
-#: src/lib/hints.cc:481
+#: src/lib/hints.cc:478
 msgid "At least one of your subtitle files is larger than "
 msgstr "Åtminstone en av dina undertextfiler är större än "
 
-#: src/lib/hints.cc:445
+#: src/lib/hints.cc:442
 msgid ""
 "At least one of your subtitle lines has more than 52 characters.  It is "
 "recommended to make each line 52 characters at most in length."
@@ -295,7 +302,7 @@ msgstr ""
 "Åtminstone en av dina rader i undertexten är längre än 52 bokstaver.  Det är "
 "lämpligt att se till att varje rad är max 52 bokstäver låg."
 
-#: src/lib/hints.cc:447
+#: src/lib/hints.cc:444
 msgid ""
 "At least one of your subtitle lines has more than 79 characters.  You should "
 "make each line 79 characters at most in length."
@@ -303,7 +310,7 @@ msgstr ""
 "Åtminstone en av dina rader i undertexten är längre än 79 bokstaver.  Det är "
 "lämpligt att se till att varje rad är max 79 bokstäver låg."
 
-#: src/lib/hints.cc:590
+#: src/lib/hints.cc:587
 msgid ""
 "At least one of your subtitles has more than 3 lines.  It is advisable to "
 "use no more than 3 lines."
@@ -311,7 +318,7 @@ msgstr ""
 "Åtminstone en av dina undertexter innehåller mer än 3 rader. Det är lämpligt "
 "att använda max 3 rader."
 
-#: src/lib/hints.cc:580
+#: src/lib/hints.cc:577
 msgid ""
 "At least one of your subtitles lasts less than 15 frames.  It is advisable "
 "to make each subtitle at least 15 frames long."
@@ -319,7 +326,7 @@ msgstr ""
 "Åtminstone en av dina undertexter är kortare än 15 bildrutor. Det är "
 "lämpligt att använda minst 15 bildrutor."
 
-#: src/lib/hints.cc:585
+#: src/lib/hints.cc:582
 msgid ""
 "At least one of your subtitles starts less than 2 frames after the previous "
 "one.  It is advisable to make the gap between subtitles at least 2 frames."
@@ -327,7 +334,7 @@ msgstr ""
 "Åtminstone en av dina undertexter börjar mindre än 2 bildrutor efter "
 "föregående undertext. Det är lämpligt att använda minst 2 bildrutor mellan."
 
-#: src/lib/hints.cc:633
+#: src/lib/hints.cc:630
 msgid ""
 "At least one piece of subtitle or closed caption content has no specified "
 "language.  It is advisable to set the language for each piece of subtitle or "
@@ -404,15 +411,15 @@ msgstr "Bitar per pixel"
 msgid "Bob Weaver Deinterlacing Filter"
 msgstr "Bob Weaver Deinterlacing Filter"
 
-#: src/lib/util.cc:598
+#: src/lib/util.cc:601
 msgid "BsL"
 msgstr "BsL"
 
-#: src/lib/util.cc:599
+#: src/lib/util.cc:602
 msgid "BsR"
 msgstr "BsR"
 
-#: src/lib/util.cc:590
+#: src/lib/util.cc:593
 msgid "C"
 msgstr "C"
 
@@ -420,7 +427,7 @@ msgstr "C"
 msgid "Cancelled"
 msgstr "Avbruten"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "Cannot contain slashes"
 msgstr "Får inte innehålla snedstreck"
 
@@ -428,11 +435,11 @@ msgstr "Får inte innehålla snedstreck"
 msgid "Cannot handle pixel format %1 during %2"
 msgstr "Kan inte hantera pixelformat %1 under %2"
 
-#: src/lib/film.cc:1662
+#: src/lib/film.cc:1711
 msgid "Cannot make a KDM as this project is not encrypted."
 msgstr "Kan inte göra KDM eftersom projektet inte är krypterat."
 
-#: src/lib/util.cc:559
+#: src/lib/util.cc:562
 msgid "Centre"
 msgstr "Center"
 
@@ -500,7 +507,7 @@ msgstr "Kombinera DCP:er"
 msgid "Computing digest"
 msgstr "Beräknar hashsumma"
 
-#: src/lib/writer.cc:535
+#: src/lib/writer.cc:531
 msgid "Computing digests"
 msgstr "Beräknar hashsummor"
 
@@ -532,24 +539,24 @@ msgid "Content to be joined must all have or not have video"
 msgstr ""
 "Källmaterial som ska sammanfogas måste alla antingen ha eller inte ha video"
 
-#: src/lib/text_content.cc:305
+#: src/lib/text_content.cc:320
 msgid ""
 "Content to be joined must both be main subtitle languages or both additional."
 msgstr ""
 "Innehåll som ska sammanfogas måste båda vara huvud- eller bi-undertexter."
 
-#: src/lib/video_content.cc:207
+#: src/lib/video_content.cc:210
 msgid "Content to be joined must have all its video used or not used."
 msgstr ""
 "Källmaterial som ska sammanfogas måste ha allt sitt video använt eller inte."
 
-#: src/lib/text_content.cc:260
+#: src/lib/text_content.cc:275
 msgid "Content to be joined must have the same 'burn subtitles' setting."
 msgstr ""
 "Källmaterial som ska sammanfogas måste använda samma inställning för 'bränn "
 "in undertexter'."
 
-#: src/lib/text_content.cc:256
+#: src/lib/text_content.cc:271
 msgid "Content to be joined must have the same 'use subtitles' setting."
 msgstr ""
 "Källmaterial som ska sammanfogas måste använda samma inställning för 'använd "
@@ -567,67 +574,67 @@ msgstr ""
 "Källmaterial som ska sammanfogas måste använda samma inställning för "
 "'ljudförstärkning'."
 
-#: src/lib/video_content.cc:239
+#: src/lib/video_content.cc:242
 msgid "Content to be joined must have the same burnt subtitle language."
 msgstr ""
 "Källmaterial som ska sammanfogas måste använda samma språk för inbrända "
 "undertexter."
 
-#: src/lib/video_content.cc:231
+#: src/lib/video_content.cc:234
 msgid "Content to be joined must have the same colour conversion."
 msgstr ""
 "Källmaterial som ska sammanfogas måste använda samma inställning för "
 "färgkonvertering."
 
-#: src/lib/video_content.cc:219
+#: src/lib/video_content.cc:222
 msgid "Content to be joined must have the same crop."
 msgstr "Källmaterial som ska sammanfogas måste ha samma beskärning."
 
-#: src/lib/video_content.cc:223
+#: src/lib/video_content.cc:226
 msgid "Content to be joined must have the same custom ratio setting."
 msgstr ""
 "Källmaterial som ska sammanfogas måste ha samma anpassade inställning av "
 "bildförhållande."
 
-#: src/lib/video_content.cc:227
+#: src/lib/video_content.cc:230
 msgid "Content to be joined must have the same custom size setting."
 msgstr ""
 "Källmaterial som ska sammanfogas måste ha samma anpassade "
 "storleksinställning."
 
-#: src/lib/video_content.cc:235
+#: src/lib/video_content.cc:238
 msgid "Content to be joined must have the same fades."
 msgstr "Källmaterial som ska sammanfogas måste ha samma in- och uttoning."
 
-#: src/lib/text_content.cc:288
+#: src/lib/text_content.cc:303
 msgid "Content to be joined must have the same outline width."
 msgstr "Texten i undertextspår som ska sammanfogas måste ha samma konturbredd."
 
-#: src/lib/video_content.cc:211
+#: src/lib/video_content.cc:214
 msgid "Content to be joined must have the same picture size."
 msgstr "Källmaterial som ska sammanfogas måste ha samma bildstorlek."
 
-#: src/lib/text_content.cc:264
+#: src/lib/text_content.cc:279
 msgid "Content to be joined must have the same subtitle X offset."
 msgstr "Undertextspår som ska sammanfogas måste ha samma förskjutning i x-led."
 
-#: src/lib/text_content.cc:272
+#: src/lib/text_content.cc:287
 msgid "Content to be joined must have the same subtitle X scale."
 msgstr "Undertextspår som ska sammanfogas måste ha samma skalning i x-led."
 
-#: src/lib/text_content.cc:268
+#: src/lib/text_content.cc:283
 msgid "Content to be joined must have the same subtitle Y offset."
 msgstr "Undertextspår som ska sammanfogas måste ha samma förskjutning i y-led."
 
-#: src/lib/text_content.cc:276
+#: src/lib/text_content.cc:291
 msgid "Content to be joined must have the same subtitle Y scale."
 msgstr "Undertextspår som ska sammanfogas måste ha samma skalning i y-led."
 
-#: src/lib/text_content.cc:284
+#: src/lib/text_content.cc:299
 msgid "Content to be joined must have the same subtitle fades."
 msgstr "Undertextspår som ska sammanfogas måste ha samma in- och uttoning."
 
-#: src/lib/text_content.cc:280
+#: src/lib/text_content.cc:295
 msgid "Content to be joined must have the same subtitle line spacing."
 msgstr "Undertextspår som ska sammanfogas måste ha samma radavstånd."
 
@@ -635,15 +642,15 @@ msgstr "Undertextspår som ska sammanfogas måste ha samma radavstånd."
 msgid "Content to be joined must have the same video frame rate"
 msgstr "Källmaterial som ska sammanfogas måste ha samma bildhastighet"
 
-#: src/lib/video_content.cc:215
+#: src/lib/video_content.cc:218
 msgid "Content to be joined must have the same video frame type."
 msgstr "Källmaterial som ska sammanfogas måste ha samma 2D-/3D-typ."
 
-#: src/lib/text_content.cc:297
+#: src/lib/text_content.cc:312
 msgid "Content to be joined must use the same DCP track."
 msgstr "Källmaterial som ska sammanfogas måste ha samma DCP-spår."
 
-#: src/lib/text_content.cc:293 src/lib/text_content.cc:313
+#: src/lib/text_content.cc:308 src/lib/text_content.cc:328
 msgid "Content to be joined must use the same fonts."
 msgstr "Källmaterial som ska sammanfogas måste använda samma typsnitt."
 
@@ -651,11 +658,11 @@ msgstr "Källmaterial som ska sammanfogas måste använda samma typsnitt."
 msgid "Content to be joined must use the same subtitle stream."
 msgstr "Källmaterial som ska sammanfogas måste använda undertext-ström."
 
-#: src/lib/text_content.cc:301
+#: src/lib/text_content.cc:316
 msgid "Content to be joined must use the same text language."
 msgstr "Källmaterial som ska sammanfogas måste använda samma språk för text."
 
-#: src/lib/video_content.cc:430
+#: src/lib/video_content.cc:438
 msgid "Content video is %1x%2"
 msgstr "Källmaterialet är %1x%2"
 
@@ -679,7 +686,7 @@ msgstr "Kunde inte ansluta till server %1 (%2)"
 msgid "Could not create remote directory %1 (%2)"
 msgstr "Kunde inte skapa fjärrkatalog %1 (%2)"
 
-#: src/lib/image_examiner.cc:65
+#: src/lib/image_examiner.cc:64
 msgid "Could not decode JPEG2000 file %1 (%2)"
 msgstr "Kunde inte avkoda JPEG2000-fil %1 (%2)"
 
@@ -715,7 +722,7 @@ msgstr "Kunde inte öppna hämtad ZIP-fil"
 msgid "Could not open file for writing"
 msgstr "Kunde inte öppna fil %1 för skrivning (%2)"
 
-#: src/lib/ffmpeg_file_encoder.cc:269
+#: src/lib/ffmpeg_file_encoder.cc:265
 msgid "Could not open output file %1 (%2)"
 msgstr "Kunde inte öppna ut-fil %1 (%2)"
 
@@ -731,19 +738,19 @@ msgstr "Kunde inte starta överföring"
 msgid "Could not write to remote file (%1)"
 msgstr "Kunde inte skriva till fjärrfil (%1)"
 
-#: src/lib/util.cc:569
+#: src/lib/util.cc:572
 msgid "D-BOX primary"
 msgstr "D-BOX primär"
 
-#: src/lib/util.cc:570
+#: src/lib/util.cc:573
 msgid "D-BOX secondary"
 msgstr "D-BOX sekundär"
 
-#: src/lib/util.cc:600
+#: src/lib/util.cc:603
 msgid "DBP"
 msgstr "DBP"
 
-#: src/lib/util.cc:601
+#: src/lib/util.cc:604
 msgid "DBS"
 msgstr "DBS"
 
@@ -755,7 +762,7 @@ msgstr "Flat"
 msgid "DCI Scope"
 msgstr "Scope"
 
-#: src/lib/dcp_subtitle_content.cc:103
+#: src/lib/dcp_subtitle_content.cc:104
 msgid "DCP XML subtitles"
 msgstr "DCP XML-undertexter"
 
@@ -780,7 +787,7 @@ msgstr ""
 "DCP-o-matic kunde inte öppna %1 (%2). Kanske finns inte filen eller har ett "
 "okänt format."
 
-#: src/lib/film.cc:1565
+#: src/lib/film.cc:1614
 msgid ""
 "DCP-o-matic had to change your settings for referring to DCPs as OV.  Please "
 "review those settings to make sure they are what you want."
@@ -789,7 +796,7 @@ msgstr ""
 "DCP:er som OV. Var vänlig kontrollera dessa inställningar så att det är "
 "korrekta."
 
-#: src/lib/film.cc:1533
+#: src/lib/film.cc:1582
 msgid ""
 "DCP-o-matic had to change your settings so that the film's frame rate is the "
 "same as that of your Atmos content."
@@ -802,7 +809,7 @@ msgid ""
 "DCP-o-matic no longer supports the `%1' filter, so it has been turned off."
 msgstr "DCP-o-matic stödjer inte längre '%1'-filtret, så det har inaktiverats."
 
-#: src/lib/config.cc:359 src/lib/config.cc:1114
+#: src/lib/config.cc:357 src/lib/config.cc:1114
 msgid "DCP-o-matic notification"
 msgstr "Meddelande från DCP-o-matic"
 
@@ -895,7 +902,7 @@ msgstr "Fel i undertext-file: såg %1 men vi förväntade oss %2"
 msgid "Error: %1"
 msgstr "Fel: %1"
 
-#: src/lib/hints.cc:408
+#: src/lib/hints.cc:405
 msgid "Examining audio, subtitles and closed captions"
 msgstr "Undersöker ljud och undertexter"
 
@@ -907,7 +914,7 @@ msgstr "Läser källmaterial"
 msgid "Examining subtitles"
 msgstr "Läser undertexter"
 
-#: src/lib/hints.cc:406
+#: src/lib/hints.cc:403
 msgid "Examining subtitles and closed captions"
 msgstr "Undersöker undertexter"
 
@@ -935,7 +942,7 @@ msgstr "Misslyckades att skicka e-post"
 msgid "Feature"
 msgstr "Feature"
 
-#: src/lib/content.cc:464
+#: src/lib/content.cc:468
 msgid "Filename"
 msgstr "Filnamn"
 
@@ -947,11 +954,11 @@ msgstr "Film"
 msgid "Finding length"
 msgstr "Söker längd"
 
-#: src/lib/content.cc:471
+#: src/lib/content.cc:475
 msgid "Frame rate"
 msgstr "Bildhastighet"
 
-#: src/lib/util.cc:943
+#: src/lib/util.cc:946
 msgid "Friday"
 msgstr "Fredag"
 
@@ -997,11 +1004,11 @@ msgid "Gradient debander"
 msgstr "Gradientutjämnare"
 
 # Sammanhang?
-#: src/lib/util.cc:594
+#: src/lib/util.cc:597
 msgid "HI"
 msgstr "HI"
 
-#: src/lib/util.cc:563
+#: src/lib/util.cc:566
 msgid "Hearing impaired"
 msgstr "Ljudspår för hörslinga"
 
@@ -1025,11 +1032,11 @@ msgstr "IEC61966-2-1 (sRGB eller sYCC)"
 msgid "IEC61966-2-4"
 msgstr "IEC61966-2-4"
 
-#: src/lib/hints.cc:188
+#: src/lib/hints.cc:185
 msgid "If you do use 25fps you should change your DCP standard to SMPTE."
 msgstr "Om 25 fps används bör DCP-standard vara SMPTE."
 
-#: src/lib/hints.cc:251
+#: src/lib/hints.cc:248
 msgid ""
 "In general it is now advisable to make SMPTE DCPs unless you have a "
 "particular reason to use Interop.  You are advised to set your DCP to use "
@@ -1039,7 +1046,7 @@ msgstr ""
 "specifikt skäl till att använda Interop.  Du bör säkerställa att din DCP "
 "använder SMPTE under fliken \"DCP\"."
 
-#: src/lib/hints.cc:573
+#: src/lib/hints.cc:570
 msgid ""
 "It is advisable to put your first subtitle at least 4 seconds after the "
 "start of the DCP to make sure it is seen."
@@ -1055,7 +1062,7 @@ msgstr "Det är inte känt vad som orsakade detta fel."
 msgid "JEDEC P22"
 msgstr "JEDEC P22"
 
-#: src/lib/config.cc:349 src/lib/config.cc:1099
+#: src/lib/config.cc:347 src/lib/config.cc:1099
 msgid "KDM delivery: $CPL_NAME"
 msgstr "KDM-leverans: $CPL_NAME"
 
@@ -1063,39 +1070,39 @@ msgstr "KDM-leverans: $CPL_NAME"
 msgid "Kernel deinterlacer"
 msgstr "Kärn-avflätare"
 
-#: src/lib/ffmpeg_encoder.cc:251 src/lib/util.cc:588
+#: src/lib/ffmpeg_encoder.cc:253 src/lib/util.cc:591
 msgid "L"
 msgstr "L"
 
-#: src/lib/util.cc:596
+#: src/lib/util.cc:599
 msgid "Lc"
 msgstr "Lc"
 
-#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:557
+#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:560
 msgid "Left"
 msgstr "Vänster"
 
-#: src/lib/util.cc:565
+#: src/lib/util.cc:568
 msgid "Left centre"
 msgstr "Vänster center"
 
-#: src/lib/util.cc:567
+#: src/lib/util.cc:570
 msgid "Left rear surround"
 msgstr "Vänster baksurround"
 
-#: src/lib/util.cc:561
+#: src/lib/util.cc:564
 msgid "Left surround"
 msgstr "Vänster surround"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "Length"
 msgstr "Speltid"
 
-#: src/lib/util.cc:591
+#: src/lib/util.cc:594
 msgid "Lfe"
 msgstr "LFE"
 
-#: src/lib/util.cc:560
+#: src/lib/util.cc:563
 msgid "Lfe (sub)"
 msgstr "LFE (Sub)"
 
@@ -1119,11 +1126,11 @@ msgstr "Logaritmisk (100:1 omfång)"
 msgid "Logarithmic (316:1 range)"
 msgstr "Logaritmisk (316:1 omfång)"
 
-#: src/lib/exceptions.cc:145
+#: src/lib/exceptions.cc:152
 msgid "Lost communication between main and writer processes"
 msgstr "Tappade kommunikationen mellan huvud- och skrivprocessen"
 
-#: src/lib/util.cc:592
+#: src/lib/util.cc:595
 msgid "Ls"
 msgstr "Ls"
 
@@ -1135,19 +1142,19 @@ msgstr "Mid-side decoder"
 msgid "Misc"
 msgstr "Diverse"
 
-#: src/lib/dcp_examiner.cc:164
+#: src/lib/dcp_examiner.cc:175
 msgid "Mismatched audio channel counts in DCP"
 msgstr "Antalet ljudkanaler är inte enhetligt genom hela DCP:n"
 
-#: src/lib/dcp_examiner.cc:170
+#: src/lib/dcp_examiner.cc:181
 msgid "Mismatched audio sample rates in DCP"
 msgstr "Ljudspårets samplingsfrekvens är inte enhetlig genom hela DCP:n"
 
-#: src/lib/dcp_examiner.cc:137
+#: src/lib/dcp_examiner.cc:145
 msgid "Mismatched frame rates in DCP"
 msgstr "Bildhastigheten är inte enhetlig genom hela DCP:n"
 
-#: src/lib/dcp_examiner.cc:145
+#: src/lib/dcp_examiner.cc:153
 msgid "Mismatched video sizes in DCP"
 msgstr "Bildstorleken är inte enhetlig genom hela DCP:n"
 
@@ -1155,11 +1162,11 @@ msgstr "Bildstorleken är inte enhetlig genom hela DCP:n"
 msgid "Missing required setting %1"
 msgstr "Nödvändig inställning saknas: %1"
 
-#: src/lib/util.cc:935
+#: src/lib/util.cc:938
 msgid "Monday"
 msgstr "Måndag"
 
-#: src/lib/writer.cc:763
+#: src/lib/writer.cc:759
 msgid "Mono"
 msgstr "Mono"
 
@@ -1183,7 +1190,7 @@ msgstr "Inga giltiga bildfiler hittades i mappen."
 msgid "Noise reduction"
 msgstr "Brusreducering"
 
-#: src/lib/writer.cc:731 src/lib/writer.cc:738 src/lib/writer.cc:761
+#: src/lib/writer.cc:727 src/lib/writer.cc:734 src/lib/writer.cc:757
 msgid "None"
 msgstr "Inget"
 
@@ -1220,7 +1227,7 @@ msgstr "Överkomplett wavelet-brusreducering"
 msgid "P3"
 msgstr "P3"
 
-#: src/lib/util.h:59
+#: src/lib/util.h:64
 msgid ""
 "Please report this problem by using Help -> Report a problem or via email to "
 "carl@dcpomatic.com"
@@ -1232,7 +1239,7 @@ msgstr ""
 msgid "Policy"
 msgstr "Policy"
 
-#: src/lib/content.cc:480
+#: src/lib/content.cc:484
 msgid "Prepared for video frame rate"
 msgstr "Förberedd för videobildshastighet"
 
@@ -1248,7 +1255,7 @@ msgstr "Promo"
 msgid "Public Service Announcement"
 msgstr "Public Service Announcement"
 
-#: src/lib/ffmpeg_encoder.cc:256 src/lib/util.cc:589
+#: src/lib/ffmpeg_encoder.cc:258 src/lib/util.cc:592
 msgid "R"
 msgstr "R"
 
@@ -1260,7 +1267,7 @@ msgstr "RGB / sRGB (IEC61966-2-1)"
 msgid "Rating"
 msgstr "Rating"
 
-#: src/lib/util.cc:597
+#: src/lib/util.cc:600
 msgid "Rc"
 msgstr "Rc"
 
@@ -1280,19 +1287,19 @@ msgstr "Rec. 601"
 msgid "Rec. 709"
 msgstr "Rec. 709"
 
-#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:558
+#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:561
 msgid "Right"
 msgstr "Höger"
 
-#: src/lib/util.cc:566
+#: src/lib/util.cc:569
 msgid "Right centre"
 msgstr "Höger center"
 
-#: src/lib/util.cc:568
+#: src/lib/util.cc:571
 msgid "Right rear surround"
 msgstr "Höger baksurround"
 
-#: src/lib/util.cc:562
+#: src/lib/util.cc:565
 msgid "Right surround"
 msgstr "Höger surround"
 
@@ -1304,7 +1311,7 @@ msgstr "Rotera 90 grader moturs"
 msgid "Rotate 90 degrees clockwise"
 msgstr "Rotera 90 grader medurs"
 
-#: src/lib/util.cc:593
+#: src/lib/util.cc:596
 msgid "Rs"
 msgstr "Rs"
 
@@ -1329,7 +1336,7 @@ msgstr "SMPTE 2085, Y'D'zD'x"
 msgid "SMPTE 240M"
 msgstr "SMPTE 240M"
 
-#: src/lib/hints.cc:615
+#: src/lib/hints.cc:612
 msgid ""
 "SMPTE DCPs with the type FTR (feature) should have markers for the first "
 "frame of end credits (FFEC) and the first frame of moving credits (FFMC).  "
@@ -1368,7 +1375,7 @@ msgstr "SSH fel [%1]"
 msgid "SSH error [%1] (%2)"
 msgstr "SSH fel [%1] (%2)"
 
-#: src/lib/util.cc:945
+#: src/lib/util.cc:948
 msgid "Saturday"
 msgstr "Lördag"
 
@@ -1384,11 +1391,11 @@ msgstr "Skickar e-post"
 msgid "Short"
 msgstr "Short"
 
-#: src/lib/util.cc:602
+#: src/lib/util.cc:605
 msgid "Sign"
 msgstr ""
 
-#: src/lib/video_content.cc:500
+#: src/lib/video_content.cc:510
 msgid "Size"
 msgstr "Upplösning"
 
@@ -1415,7 +1422,7 @@ msgstr ""
 "Några filer har ändrats sedan de lades till i projektet.  Öppna projektet i "
 "DCP-o-matic, kolla inställningarna, spara sedan innan du försöker igen."
 
-#: src/lib/hints.cc:554
+#: src/lib/hints.cc:551
 msgid ""
 "Some of your closed captions span more than %1 lines, so they will be "
 "truncated."
@@ -1423,22 +1430,22 @@ msgstr ""
 "Några av dina dolda undertext-block har fler än %1 rader. De överskjutande "
 "raderna kommer förmodligen klippas bort."
 
-#: src/lib/hints.cc:653
+#: src/lib/hints.cc:650
 msgid ""
 "Some of your content has audio but you have not set the audio language.  It "
 "is advisable to set the audio language in the \"DCP\" tab unless your audio "
 "has no spoken parts."
 msgstr ""
 
-#: src/lib/film.cc:406
+#: src/lib/film.cc:417
 msgid "Some of your content needs a KDM"
 msgstr "En del av ditt källmaterial behöver en KDM"
 
-#: src/lib/film.cc:409
+#: src/lib/film.cc:420
 msgid "Some of your content needs an OV"
 msgstr "En del av ditt källmaterial behöver en OV"
 
-#: src/lib/writer.cc:765
+#: src/lib/writer.cc:761
 msgid "Stereo"
 msgstr "Stereo"
 
@@ -1450,7 +1457,7 @@ msgstr "Stereo till 5.1 upp-mixare A"
 msgid "Stereo to 5.1 up-mixer B"
 msgstr "Stereo till 5.1 upp-mixare B"
 
-#: src/lib/util.cc:933
+#: src/lib/util.cc:936
 msgid "Sunday"
 msgstr "Söndag"
 
@@ -1470,7 +1477,7 @@ msgstr "Test"
 msgid "Text subtitles"
 msgstr "Undertexter"
 
-#: src/lib/film.cc:389
+#: src/lib/film.cc:400
 msgid "The DCP is empty, perhaps because all the content has zero length."
 msgstr "DCP:n är tom, kanske för att källmaterialet har speltid noll."
 
@@ -1482,7 +1489,7 @@ msgstr "Certifikatkedjan för att signera är ogiltig"
 msgid "The certificate chain for signing is invalid (%1)"
 msgstr "Certifikatkedjan för att signera är ogiltig (%1)"
 
-#: src/lib/video_decoder.cc:86
+#: src/lib/video_decoder.cc:81
 msgid ""
 "The content file %1 is set as 3D but does not appear to contain 3D images.  "
 "Please set it to 2D.  You can still make a 3D DCP from this content by "
@@ -1516,7 +1523,7 @@ msgstr "Filen %1 har trimmats med %2 millisekunder mindre."
 msgid "The file %1 has been trimmed by %2 milliseconds more."
 msgstr "Filen %1 har trimmats med %2 millisekunder mer."
 
-#: src/lib/hints.cc:241
+#: src/lib/hints.cc:238
 msgid ""
 "There is a large difference between the frame rate of your DCP and that of "
 "some of your content.  This will cause your audio to play back at a much "
@@ -1530,7 +1537,7 @@ msgstr ""
 "att ange DCP:ns bildhastighet närmare källmaterialets, förutsatt att den "
 "tänkta utrustningen för uppspelning klarar den angivna bildhastigheten."
 
-#: src/lib/dcp_content.cc:657
+#: src/lib/dcp_content.cc:659
 msgid "There is no video in this DCP"
 msgstr "Det finns inget bildspår i denna DCP"
 
@@ -1544,11 +1551,11 @@ msgstr ""
 "operativsystem, försök att minska antalet kodnings-trådar i Allmänt-fliken "
 "under Inställningar."
 
-#: src/lib/util.cc:1146
+#: src/lib/util.cc:1150
 msgid "This KDM was made for DCP-o-matic but not for its leaf certificate."
 msgstr "Denna KDM är skapad för DCP-o-matic men inte för dess löv-certifikat."
 
-#: src/lib/util.cc:1144
+#: src/lib/util.cc:1148
 msgid "This KDM was not made for DCP-o-matic's decryption certificate."
 msgstr "Denna KDM är inte gjord för DCP-o-matics dekrypterings-certifikat."
 
@@ -1580,7 +1587,7 @@ msgstr ""
 "Detta är en KDM. KDM:er ska läggas till DCP:er genom att högerklicka på "
 "källmaterialet och välja \"Lägg till KDM\"."
 
-#: src/lib/film.cc:581
+#: src/lib/film.cc:595
 msgid ""
 "This film was created with a newer version of DCP-o-matic, and it cannot be "
 "loaded into this version.  Sorry!"
@@ -1588,7 +1595,7 @@ msgstr ""
 "Denna film skapades i en nyare version av DCP-o-matic, och den kan inte "
 "öppnas i denna version. Förlåt!"
 
-#: src/lib/film.cc:566
+#: src/lib/film.cc:580
 msgid ""
 "This film was created with an older version of DCP-o-matic, and "
 "unfortunately it cannot be loaded into this version.  You will need to "
@@ -1598,7 +1605,7 @@ msgstr ""
 "inte öppnas i denna version.  Du måste skapa en ny film, lägga till ditt "
 "källmaterial och ange inställningar på nytt.  Förlåt!"
 
-#: src/lib/util.cc:941
+#: src/lib/util.cc:944
 msgid "Thursday"
 msgstr "Torsdag"
 
@@ -1618,7 +1625,7 @@ msgstr "Transkoderar %1"
 msgid "Transitional"
 msgstr "Transitional"
 
-#: src/lib/util.cc:937
+#: src/lib/util.cc:940
 msgid "Tuesday"
 msgstr "Tisdag"
 
@@ -1642,7 +1649,7 @@ msgstr "Okänd"
 msgid "Unknown error"
 msgstr "Okänt fel"
 
-#: src/lib/ffmpeg_decoder.cc:343
+#: src/lib/ffmpeg_decoder.cc:339
 msgid "Unrecognised audio sample format (%1)"
 msgstr "Okänt ljudsamplingsformat (%1)"
 
@@ -1662,7 +1669,7 @@ msgstr "Ospecificerad"
 msgid "Untitled"
 msgstr "Utan titel"
 
-#: src/lib/util.cc:571 src/lib/util.cc:572
+#: src/lib/util.cc:574 src/lib/util.cc:575
 msgid "Unused"
 msgstr "Oanvänd"
 
@@ -1675,7 +1682,7 @@ msgid "Upmix R"
 msgstr "Uppmixa R"
 
 # Sammanhang?
-#: src/lib/util.cc:595
+#: src/lib/util.cc:598
 msgid "VI"
 msgstr "VI"
 
@@ -1687,7 +1694,7 @@ msgstr "Verifiera DCP"
 msgid "Vertical flip"
 msgstr "Vertikal spegling"
 
-#: src/lib/util.cc:564
+#: src/lib/util.cc:567
 msgid "Visually impaired"
 msgstr "Uppläst text"
 
@@ -1699,7 +1706,7 @@ msgstr "Väntar"
 msgid "Weave filter"
 msgstr "Weave-filter"
 
-#: src/lib/util.cc:939
+#: src/lib/util.cc:942
 msgid "Wednesday"
 msgstr "Onsdag"
 
@@ -1712,7 +1719,7 @@ msgstr "YCOCG"
 msgid "Yet Another Deinterlacing Filter"
 msgstr "Yet Another Deinterlacing Filter"
 
-#: src/lib/hints.cc:201
+#: src/lib/hints.cc:198
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You are advised to change the DCP frame rate "
@@ -1721,7 +1728,7 @@ msgstr ""
 "Vald bildhastighet är %1 fps. Denna bildhastighet stöds inte av all "
 "uppspelningsutrustning. Rekommenderat är att ändra bildhastighet till %2 fps."
 
-#: src/lib/hints.cc:185
+#: src/lib/hints.cc:182
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You may want to consider changing your frame "
@@ -1730,7 +1737,7 @@ msgstr ""
 "Vald bildhastighet är %1 fps. Denna bildhastighet stöds inte av all "
 "uppspelningsutrustning. Överväg att ändra bildhastighet till %2 fps."
 
-#: src/lib/hints.cc:195
+#: src/lib/hints.cc:192
 msgid ""
 "You are set up for a DCP frame rate of 30fps, which is not supported by all "
 "projectors.  Be aware that you may have compatibility problems."
@@ -1738,7 +1745,7 @@ msgstr ""
 "Vald bildhastighet är 30 fps. Denna bildhastighet stöds inte av all "
 "uppspelningsutrustning. Problem vid uppspelning kan förekomma."
 
-#: src/lib/hints.cc:306
+#: src/lib/hints.cc:303
 msgid ""
 "You are using 3D content but your DCP is set to 2D.  Set the DCP to 3D if "
 "you want to play it back on a 3D system (e.g. Real-D, MasterImage etc.)"
@@ -1747,7 +1754,7 @@ msgstr ""
 "för 3D om du vill spela upp den med 3D-utrustning (t.ex. Real-D, MasterImage "
 "etc.)"
 
-#: src/lib/hints.cc:122
+#: src/lib/hints.cc:119
 msgid ""
 "You are using DCP-o-matic's stereo-to-5.1 upmixer.  This is experimental and "
 "may result in poor-quality audio.  If you continue, you should listen to the "
@@ -1758,7 +1765,7 @@ msgstr ""
 "rekommenderas att du provlyssnar den färdiga DCP:n på biograf för att "
 "säkerställa att den låter bra."
 
-#: src/lib/hints.cc:290
+#: src/lib/hints.cc:287
 msgid ""
 "You have %1 files that look like they are VOB files from DVD. You should "
 "join them to ensure smooth joins between the files."
@@ -1766,7 +1773,7 @@ msgstr ""
 "Du har %1 filer som ser ut att vara VOB-filer från en DVD. Du bör sammanfoga "
 "dem för att säkerställa korrekta skarvar mellan filerna."
 
-#: src/lib/film.cc:1529
+#: src/lib/film.cc:1578
 msgid ""
 "You have more than one piece of Atmos content, and they do not have the same "
 "frame rate.  You must remove some Atmos content."
@@ -1774,7 +1781,7 @@ msgstr ""
 "Du har mer än en Atmos-del i innehållet, och de har inte samma "
 "bildhastighet.  Du måste ta bort någon/några Atmos-delar."
 
-#: src/lib/hints.cc:561
+#: src/lib/hints.cc:558
 msgid ""
 "You have overlapping closed captions, which are not allowed in Interop "
 "DCPs.  Change your DCP standard to SMPTE."
@@ -1782,7 +1789,7 @@ msgstr ""
 "Du har överlappande dolda undertextspår. Detta är inte tillåtet för Interop-"
 "DCP:er. Ändra DCP-standard till SMPTE."
 
-#: src/lib/hints.cc:274
+#: src/lib/hints.cc:271
 msgid ""
 "You have specified a font file which is larger than 640kB.  This is very "
 "likely to cause problems on playback."
@@ -1790,11 +1797,11 @@ msgstr ""
 "Du använder en typsnittsfil som är större än 640kB. Risken är stor att detta "
 "leder till problem vid uppspelning."
 
-#: src/lib/film.cc:385
+#: src/lib/film.cc:396
 msgid "You must add some content to the DCP before creating it"
 msgstr "Du måste lägga till källmaterial till DCP:n innan du skapar den"
 
-#: src/lib/hints.cc:112
+#: src/lib/hints.cc:109
 msgid ""
 "Your DCP has fewer than 6 audio channels.  This may cause problems on some "
 "projectors.  You may want to set the DCP to have 6 channels.  It does not "
@@ -1806,7 +1813,7 @@ msgstr ""
 "ditt innehåll har färre kanaler, DCP-o-matic fyller i de extra kanalerna med "
 "tystnad."
 
-#: src/lib/hints.cc:160
+#: src/lib/hints.cc:157
 #, fuzzy
 msgid ""
 "Your DCP uses an unusual container ratio.  This may cause problems on some "
@@ -1816,7 +1823,7 @@ msgstr ""
 "uppspelning på en del utrustning. Använd Flat eller Scope som bildformat om "
 "möjligt"
 
-#: src/lib/hints.cc:340
+#: src/lib/hints.cc:337
 msgid ""
 "Your audio level is very high (on %1).  You should reduce the gain of your "
 "audio content."
@@ -1824,7 +1831,7 @@ msgstr ""
 "Din ljudnivå är mycket hög (på %1). Rekommenderat är att sänka gain på "
 "ljudspåret."
 
-#: src/lib/config.cc:289
+#: src/lib/config.cc:287
 msgid ""
 "Your default container is not valid and has been changed to Flat (1.85:1)"
 msgstr ""
@@ -1851,7 +1858,7 @@ msgstr "[bildsekvens]"
 msgid "[still]"
 msgstr "[stillbild]"
 
-#: src/lib/dcp_subtitle_content.cc:97 src/lib/string_text_file_content.cc:78
+#: src/lib/dcp_subtitle_content.cc:98 src/lib/string_text_file_content.cc:78
 msgid "[subtitles]"
 msgstr "[undertexter]"
 
@@ -1869,11 +1876,11 @@ msgstr "uppkopplingen tog för lång tid"
 msgid "connecting"
 msgstr "ansluter"
 
-#: src/lib/film.cc:381
+#: src/lib/film.cc:392
 msgid "container"
 msgstr "behållare"
 
-#: src/lib/film.cc:393
+#: src/lib/film.cc:404
 msgid "content type"
 msgstr "filmtyp"
 
@@ -1925,78 +1932,78 @@ msgstr "fel vid async_read (%1)"
 msgid "error during async_write (%1)"
 msgstr "fel vid async_write (%1)"
 
-#: src/lib/content.cc:473 src/lib/content.cc:482
+#: src/lib/content.cc:477 src/lib/content.cc:486
 msgid "frames per second"
 msgstr "bilder per sekund"
 
 #. / TRANSLATORS: h here is an abbreviation for hours
-#: src/lib/util.cc:200
+#: src/lib/util.cc:203
 msgid "h"
 msgstr "tim"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:750
+#: src/lib/dcp_content.cc:752
 msgid "it does not have closed captions in all its reels."
 msgstr "den har inte dold undertext i alla akter."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:739
+#: src/lib/dcp_content.cc:741
 msgid "it does not have open subtitles in all its reels."
 msgstr "den har inte undertext i alla akter."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:706
+#: src/lib/dcp_content.cc:708
 msgid "it does not have sound in all its reels."
 msgstr "den har inte ljud i alla akter."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:610
+#: src/lib/dcp_content.cc:612
 msgid "it has a different frame rate to the film."
 msgstr "den har en annan bildhastighet än filmen."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:765
+#: src/lib/dcp_content.cc:767
 msgid ""
 "it has a start trim so its subtitles or closed captions must be re-written."
 msgstr "den har en beskärning i början så dess undertitlar måste skrivas om."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:667
+#: src/lib/dcp_content.cc:669
 msgid "it is 2K and the film is 4K."
 msgstr "den är i 2K men filmen är i 4K."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:664
+#: src/lib/dcp_content.cc:666
 msgid "it is 4K and the film is 2K."
 msgstr "den är i 4K men filmen är i 2K."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:598
+#: src/lib/dcp_content.cc:600
 msgid "it is Interop and the film is set to SMPTE."
 msgstr "den är i Interop men filmen är inställd att vara i SMPTE."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:602
+#: src/lib/dcp_content.cc:604
 msgid "it is SMPTE and the film is set to Interop."
 msgstr "den är i SMPTE men filmen är inställd att vara i Interop."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:712
+#: src/lib/dcp_content.cc:714
 msgid "it overlaps other audio content; remove the other content."
 msgstr "den överlappar med annat ljud-källmaterial; ta bort detta."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:770
+#: src/lib/dcp_content.cc:772
 msgid "it overlaps other text content; remove the other content."
 msgstr "den överlappar med annat undertext-källmaterial; ta bort detta."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:677
+#: src/lib/dcp_content.cc:679
 msgid "it overlaps other video content; remove the other content."
 msgstr "den överlappar med annat video-källmaterial; ta bort detta."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:633
+#: src/lib/dcp_content.cc:635
 msgid ""
 "its reel lengths differ from those in the film; set the reel mode to 'split "
 "by video content'."
@@ -2005,12 +2012,12 @@ msgstr ""
 "'dela upp enligt källmaterial'."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:672
+#: src/lib/dcp_content.cc:674
 msgid "its video frame size differs from the film's."
 msgstr "bildrutornas storlek skiljer sig från filmens."
 
 #. / TRANSLATORS: m here is an abbreviation for minutes
-#: src/lib/util.cc:209
+#: src/lib/util.cc:212
 msgid "m"
 msgstr "min"
 
@@ -2019,12 +2026,12 @@ msgstr "min"
 msgid "moving"
 msgstr "rörlig"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "name"
 msgstr "namn"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:756
+#: src/lib/dcp_content.cc:758
 #, fuzzy
 msgid ""
 "one of its closed caption has a non-zero entry point so it must be re-"
@@ -2032,7 +2039,7 @@ msgid ""
 msgstr "en av dess undertitlar har en icke-tom början så den måste skrivas om."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:743
+#: src/lib/dcp_content.cc:745
 #, fuzzy
 msgid ""
 "one of its subtitle reels has a non-zero entry point so it must be re-"
@@ -2041,7 +2048,7 @@ msgstr ""
 "en av dess undertextakter har en icke-tom början så den måste skrivas om."
 
 #. / TRANSLATORS: s here is an abbreviation for seconds
-#: src/lib/util.cc:219
+#: src/lib/util.cc:222
 msgid "s"
 msgstr "sek"
 
@@ -2049,7 +2056,7 @@ msgstr "sek"
 msgid "sRGB"
 msgstr "sRGB"
 
-#: src/lib/film.cc:402
+#: src/lib/film.cc:413
 msgid "some of your content is missing"
 msgstr "en del av ditt källmaterial saknas"
 
@@ -2061,7 +2068,7 @@ msgstr "stillbild"
 msgid "unknown"
 msgstr "okänd"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "video frames"
 msgstr "bildrutor"
 
diff --git a/src/lib/po/tr_TR.po b/src/lib/po/tr_TR.po
index 8226936b8..3f1244de0 100644
--- a/src/lib/po/tr_TR.po
+++ b/src/lib/po/tr_TR.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-08-20 23:10+0200\n"
+"POT-Creation-Date: 2021-10-17 15:26+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -17,39 +17,39 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 
-#: src/lib/video_content.cc:486
+#: src/lib/video_content.cc:496
 #, c-format
 msgid ""
 "\n"
 "Content frame rate %.4f\n"
 msgstr ""
 
-#: src/lib/video_content.cc:451
+#: src/lib/video_content.cc:461
 msgid ""
 "\n"
 "Cropped to %1x%2"
 msgstr ""
 
-#: src/lib/video_content.cc:444
+#: src/lib/video_content.cc:452
 #, c-format
 msgid ""
 "\n"
 "Display aspect ratio %.2f:1"
 msgstr ""
 
-#: src/lib/video_content.cc:474
+#: src/lib/video_content.cc:484
 msgid ""
 "\n"
 "Padded with black to fit container %1 (%2x%3)"
 msgstr ""
 
-#: src/lib/video_content.cc:464
+#: src/lib/video_content.cc:474
 msgid ""
 "\n"
 "Scaled to %1x%2"
 msgstr ""
 
-#: src/lib/video_content.cc:468 src/lib/video_content.cc:479
+#: src/lib/video_content.cc:478 src/lib/video_content.cc:489
 #, c-format
 msgid " (%.2f:1)"
 msgstr ""
@@ -85,7 +85,7 @@ msgstr ""
 msgid "%1 [Atmos]"
 msgstr ""
 
-#: src/lib/dcp_content.cc:318
+#: src/lib/dcp_content.cc:320
 msgid "%1 [DCP]"
 msgstr ""
 
@@ -101,7 +101,7 @@ msgstr ""
 msgid "%1 [video]"
 msgstr ""
 
-#: src/lib/video_content.cc:439
+#: src/lib/video_content.cc:447
 #, c-format
 msgid ", pixel aspect ratio %.2f:1"
 msgstr ""
@@ -150,7 +150,7 @@ msgstr ""
 msgid "3D denoiser"
 msgstr ""
 
-#: src/lib/hints.cc:212
+#: src/lib/hints.cc:209
 msgid ""
 "4K 3D is only supported by a very limited number of projectors.  Unless you "
 "know that you will play this DCP back on a capable projector, it is "
@@ -182,13 +182,20 @@ msgid ""
 "Paypal to donate €10</a></ul><p>Thank you!"
 msgstr ""
 
-#: src/lib/hints.cc:169
+#: src/lib/hints.cc:166
 msgid ""
 "A few projectors have problems playing back very high bit-rate DCPs.  It is "
 "a good idea to drop the JPEG2000 bandwidth down to about 200Mbit/s; this is "
 "unlikely to have any visible effect on the image."
 msgstr ""
 
+#: src/lib/text_content.cc:248
+msgid ""
+"A subtitle or closed caption file in this project is marked with the "
+"language '%1', which DCP-o-matic does not recognise.  The file's language "
+"has been cleared."
+msgstr ""
+
 #: src/lib/ffmpeg_content.cc:635
 msgid "ARIB STD-B67 ('Hybrid log-gamma')"
 msgstr ""
@@ -197,7 +204,7 @@ msgstr ""
 msgid "Advertisement"
 msgstr ""
 
-#: src/lib/hints.cc:146
+#: src/lib/hints.cc:143
 msgid ""
 "All of your content is in Scope (2.39:1) but your DCP's container is Flat "
 "(1.85:1).  This will letter-box your content inside a Flat (1.85:1) frame.  "
@@ -205,7 +212,7 @@ msgid ""
 "tab."
 msgstr ""
 
-#: src/lib/hints.cc:150
+#: src/lib/hints.cc:147
 msgid ""
 "All of your content narrower than 1.90:1 but your DCP's container is Scope "
 "(2.39:1).  This will pillar-box your content.  You may prefer to set your "
@@ -224,54 +231,54 @@ msgstr ""
 msgid "Analysing subtitles"
 msgstr ""
 
-#: src/lib/hints.cc:368
+#: src/lib/hints.cc:365
 msgid ""
 "At least one marker comes after the end of the project and will be ignored."
 msgstr ""
 
-#: src/lib/hints.cc:473
+#: src/lib/hints.cc:470
 msgid "At least one of your closed caption files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:466
+#: src/lib/hints.cc:463
 msgid "At least one of your closed caption files' XML part is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:481
+#: src/lib/hints.cc:478
 msgid "At least one of your subtitle files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:445
+#: src/lib/hints.cc:442
 msgid ""
 "At least one of your subtitle lines has more than 52 characters.  It is "
 "recommended to make each line 52 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:447
+#: src/lib/hints.cc:444
 msgid ""
 "At least one of your subtitle lines has more than 79 characters.  You should "
 "make each line 79 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:590
+#: src/lib/hints.cc:587
 msgid ""
 "At least one of your subtitles has more than 3 lines.  It is advisable to "
 "use no more than 3 lines."
 msgstr ""
 
-#: src/lib/hints.cc:580
+#: src/lib/hints.cc:577
 msgid ""
 "At least one of your subtitles lasts less than 15 frames.  It is advisable "
 "to make each subtitle at least 15 frames long."
 msgstr ""
 
-#: src/lib/hints.cc:585
+#: src/lib/hints.cc:582
 msgid ""
 "At least one of your subtitles starts less than 2 frames after the previous "
 "one.  It is advisable to make the gap between subtitles at least 2 frames."
 msgstr ""
 
-#: src/lib/hints.cc:633
+#: src/lib/hints.cc:630
 msgid ""
 "At least one piece of subtitle or closed caption content has no specified "
 "language.  It is advisable to set the language for each piece of subtitle or "
@@ -344,15 +351,15 @@ msgstr ""
 msgid "Bob Weaver Deinterlacing Filter"
 msgstr ""
 
-#: src/lib/util.cc:598
+#: src/lib/util.cc:601
 msgid "BsL"
 msgstr ""
 
-#: src/lib/util.cc:599
+#: src/lib/util.cc:602
 msgid "BsR"
 msgstr ""
 
-#: src/lib/util.cc:590
+#: src/lib/util.cc:593
 msgid "C"
 msgstr ""
 
@@ -360,7 +367,7 @@ msgstr ""
 msgid "Cancelled"
 msgstr ""
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "Cannot contain slashes"
 msgstr ""
 
@@ -368,11 +375,11 @@ msgstr ""
 msgid "Cannot handle pixel format %1 during %2"
 msgstr ""
 
-#: src/lib/film.cc:1662
+#: src/lib/film.cc:1711
 msgid "Cannot make a KDM as this project is not encrypted."
 msgstr ""
 
-#: src/lib/util.cc:559
+#: src/lib/util.cc:562
 msgid "Centre"
 msgstr ""
 
@@ -440,7 +447,7 @@ msgstr ""
 msgid "Computing digest"
 msgstr ""
 
-#: src/lib/writer.cc:535
+#: src/lib/writer.cc:531
 msgid "Computing digests"
 msgstr ""
 
@@ -468,20 +475,20 @@ msgstr ""
 msgid "Content to be joined must all have or not have video"
 msgstr ""
 
-#: src/lib/text_content.cc:305
+#: src/lib/text_content.cc:320
 msgid ""
 "Content to be joined must both be main subtitle languages or both additional."
 msgstr ""
 
-#: src/lib/video_content.cc:207
+#: src/lib/video_content.cc:210
 msgid "Content to be joined must have all its video used or not used."
 msgstr ""
 
-#: src/lib/text_content.cc:260
+#: src/lib/text_content.cc:275
 msgid "Content to be joined must have the same 'burn subtitles' setting."
 msgstr ""
 
-#: src/lib/text_content.cc:256
+#: src/lib/text_content.cc:271
 msgid "Content to be joined must have the same 'use subtitles' setting."
 msgstr ""
 
@@ -493,59 +500,59 @@ msgstr ""
 msgid "Content to be joined must have the same audio gain."
 msgstr ""
 
-#: src/lib/video_content.cc:239
+#: src/lib/video_content.cc:242
 msgid "Content to be joined must have the same burnt subtitle language."
 msgstr ""
 
-#: src/lib/video_content.cc:231
+#: src/lib/video_content.cc:234
 msgid "Content to be joined must have the same colour conversion."
 msgstr ""
 
-#: src/lib/video_content.cc:219
+#: src/lib/video_content.cc:222
 msgid "Content to be joined must have the same crop."
 msgstr ""
 
-#: src/lib/video_content.cc:223
+#: src/lib/video_content.cc:226
 msgid "Content to be joined must have the same custom ratio setting."
 msgstr ""
 
-#: src/lib/video_content.cc:227
+#: src/lib/video_content.cc:230
 msgid "Content to be joined must have the same custom size setting."
 msgstr ""
 
-#: src/lib/video_content.cc:235
+#: src/lib/video_content.cc:238
 msgid "Content to be joined must have the same fades."
 msgstr ""
 
-#: src/lib/text_content.cc:288
+#: src/lib/text_content.cc:303
 msgid "Content to be joined must have the same outline width."
 msgstr ""
 
-#: src/lib/video_content.cc:211
+#: src/lib/video_content.cc:214
 msgid "Content to be joined must have the same picture size."
 msgstr ""
 
-#: src/lib/text_content.cc:264
+#: src/lib/text_content.cc:279
 msgid "Content to be joined must have the same subtitle X offset."
 msgstr ""
 
-#: src/lib/text_content.cc:272
+#: src/lib/text_content.cc:287
 msgid "Content to be joined must have the same subtitle X scale."
 msgstr ""
 
-#: src/lib/text_content.cc:268
+#: src/lib/text_content.cc:283
 msgid "Content to be joined must have the same subtitle Y offset."
 msgstr ""
 
-#: src/lib/text_content.cc:276
+#: src/lib/text_content.cc:291
 msgid "Content to be joined must have the same subtitle Y scale."
 msgstr ""
 
-#: src/lib/text_content.cc:284
+#: src/lib/text_content.cc:299
 msgid "Content to be joined must have the same subtitle fades."
 msgstr ""
 
-#: src/lib/text_content.cc:280
+#: src/lib/text_content.cc:295
 msgid "Content to be joined must have the same subtitle line spacing."
 msgstr ""
 
@@ -553,15 +560,15 @@ msgstr ""
 msgid "Content to be joined must have the same video frame rate"
 msgstr ""
 
-#: src/lib/video_content.cc:215
+#: src/lib/video_content.cc:218
 msgid "Content to be joined must have the same video frame type."
 msgstr ""
 
-#: src/lib/text_content.cc:297
+#: src/lib/text_content.cc:312
 msgid "Content to be joined must use the same DCP track."
 msgstr ""
 
-#: src/lib/text_content.cc:293 src/lib/text_content.cc:313
+#: src/lib/text_content.cc:308 src/lib/text_content.cc:328
 msgid "Content to be joined must use the same fonts."
 msgstr ""
 
@@ -569,11 +576,11 @@ msgstr ""
 msgid "Content to be joined must use the same subtitle stream."
 msgstr ""
 
-#: src/lib/text_content.cc:301
+#: src/lib/text_content.cc:316
 msgid "Content to be joined must use the same text language."
 msgstr ""
 
-#: src/lib/video_content.cc:430
+#: src/lib/video_content.cc:438
 msgid "Content video is %1x%2"
 msgstr ""
 
@@ -597,7 +604,7 @@ msgstr ""
 msgid "Could not create remote directory %1 (%2)"
 msgstr ""
 
-#: src/lib/image_examiner.cc:65
+#: src/lib/image_examiner.cc:64
 msgid "Could not decode JPEG2000 file %1 (%2)"
 msgstr ""
 
@@ -631,7 +638,7 @@ msgstr ""
 msgid "Could not open file for writing"
 msgstr ""
 
-#: src/lib/ffmpeg_file_encoder.cc:269
+#: src/lib/ffmpeg_file_encoder.cc:265
 msgid "Could not open output file %1 (%2)"
 msgstr ""
 
@@ -647,19 +654,19 @@ msgstr ""
 msgid "Could not write to remote file (%1)"
 msgstr ""
 
-#: src/lib/util.cc:569
+#: src/lib/util.cc:572
 msgid "D-BOX primary"
 msgstr ""
 
-#: src/lib/util.cc:570
+#: src/lib/util.cc:573
 msgid "D-BOX secondary"
 msgstr ""
 
-#: src/lib/util.cc:600
+#: src/lib/util.cc:603
 msgid "DBP"
 msgstr ""
 
-#: src/lib/util.cc:601
+#: src/lib/util.cc:604
 msgid "DBS"
 msgstr ""
 
@@ -671,7 +678,7 @@ msgstr ""
 msgid "DCI Scope"
 msgstr ""
 
-#: src/lib/dcp_subtitle_content.cc:103
+#: src/lib/dcp_subtitle_content.cc:104
 msgid "DCP XML subtitles"
 msgstr ""
 
@@ -694,13 +701,13 @@ msgid ""
 "is in an unexpected format."
 msgstr ""
 
-#: src/lib/film.cc:1565
+#: src/lib/film.cc:1614
 msgid ""
 "DCP-o-matic had to change your settings for referring to DCPs as OV.  Please "
 "review those settings to make sure they are what you want."
 msgstr ""
 
-#: src/lib/film.cc:1533
+#: src/lib/film.cc:1582
 msgid ""
 "DCP-o-matic had to change your settings so that the film's frame rate is the "
 "same as that of your Atmos content."
@@ -711,7 +718,7 @@ msgid ""
 "DCP-o-matic no longer supports the `%1' filter, so it has been turned off."
 msgstr ""
 
-#: src/lib/config.cc:359 src/lib/config.cc:1114
+#: src/lib/config.cc:357 src/lib/config.cc:1114
 msgid "DCP-o-matic notification"
 msgstr ""
 
@@ -791,7 +798,7 @@ msgstr ""
 msgid "Error: %1"
 msgstr ""
 
-#: src/lib/hints.cc:408
+#: src/lib/hints.cc:405
 msgid "Examining audio, subtitles and closed captions"
 msgstr ""
 
@@ -803,7 +810,7 @@ msgstr ""
 msgid "Examining subtitles"
 msgstr ""
 
-#: src/lib/hints.cc:406
+#: src/lib/hints.cc:403
 msgid "Examining subtitles and closed captions"
 msgstr ""
 
@@ -831,7 +838,7 @@ msgstr ""
 msgid "Feature"
 msgstr ""
 
-#: src/lib/content.cc:464
+#: src/lib/content.cc:468
 msgid "Filename"
 msgstr ""
 
@@ -843,11 +850,11 @@ msgstr ""
 msgid "Finding length"
 msgstr ""
 
-#: src/lib/content.cc:471
+#: src/lib/content.cc:475
 msgid "Frame rate"
 msgstr ""
 
-#: src/lib/util.cc:943
+#: src/lib/util.cc:946
 msgid "Friday"
 msgstr ""
 
@@ -891,11 +898,11 @@ msgstr ""
 msgid "Gradient debander"
 msgstr ""
 
-#: src/lib/util.cc:594
+#: src/lib/util.cc:597
 msgid "HI"
 msgstr ""
 
-#: src/lib/util.cc:563
+#: src/lib/util.cc:566
 msgid "Hearing impaired"
 msgstr ""
 
@@ -919,18 +926,18 @@ msgstr ""
 msgid "IEC61966-2-4"
 msgstr ""
 
-#: src/lib/hints.cc:188
+#: src/lib/hints.cc:185
 msgid "If you do use 25fps you should change your DCP standard to SMPTE."
 msgstr ""
 
-#: src/lib/hints.cc:251
+#: src/lib/hints.cc:248
 msgid ""
 "In general it is now advisable to make SMPTE DCPs unless you have a "
 "particular reason to use Interop.  You are advised to set your DCP to use "
 "the SMPTE standard in the \"DCP\" tab."
 msgstr ""
 
-#: src/lib/hints.cc:573
+#: src/lib/hints.cc:570
 msgid ""
 "It is advisable to put your first subtitle at least 4 seconds after the "
 "start of the DCP to make sure it is seen."
@@ -944,7 +951,7 @@ msgstr ""
 msgid "JEDEC P22"
 msgstr ""
 
-#: src/lib/config.cc:349 src/lib/config.cc:1099
+#: src/lib/config.cc:347 src/lib/config.cc:1099
 msgid "KDM delivery: $CPL_NAME"
 msgstr ""
 
@@ -952,39 +959,39 @@ msgstr ""
 msgid "Kernel deinterlacer"
 msgstr ""
 
-#: src/lib/ffmpeg_encoder.cc:251 src/lib/util.cc:588
+#: src/lib/ffmpeg_encoder.cc:253 src/lib/util.cc:591
 msgid "L"
 msgstr ""
 
-#: src/lib/util.cc:596
+#: src/lib/util.cc:599
 msgid "Lc"
 msgstr ""
 
-#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:557
+#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:560
 msgid "Left"
 msgstr ""
 
-#: src/lib/util.cc:565
+#: src/lib/util.cc:568
 msgid "Left centre"
 msgstr ""
 
-#: src/lib/util.cc:567
+#: src/lib/util.cc:570
 msgid "Left rear surround"
 msgstr ""
 
-#: src/lib/util.cc:561
+#: src/lib/util.cc:564
 msgid "Left surround"
 msgstr ""
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "Length"
 msgstr ""
 
-#: src/lib/util.cc:591
+#: src/lib/util.cc:594
 msgid "Lfe"
 msgstr ""
 
-#: src/lib/util.cc:560
+#: src/lib/util.cc:563
 msgid "Lfe (sub)"
 msgstr ""
 
@@ -1008,11 +1015,11 @@ msgstr ""
 msgid "Logarithmic (316:1 range)"
 msgstr ""
 
-#: src/lib/exceptions.cc:145
+#: src/lib/exceptions.cc:152
 msgid "Lost communication between main and writer processes"
 msgstr ""
 
-#: src/lib/util.cc:592
+#: src/lib/util.cc:595
 msgid "Ls"
 msgstr ""
 
@@ -1024,19 +1031,19 @@ msgstr ""
 msgid "Misc"
 msgstr ""
 
-#: src/lib/dcp_examiner.cc:164
+#: src/lib/dcp_examiner.cc:175
 msgid "Mismatched audio channel counts in DCP"
 msgstr ""
 
-#: src/lib/dcp_examiner.cc:170
+#: src/lib/dcp_examiner.cc:181
 msgid "Mismatched audio sample rates in DCP"
 msgstr ""
 
-#: src/lib/dcp_examiner.cc:137
+#: src/lib/dcp_examiner.cc:145
 msgid "Mismatched frame rates in DCP"
 msgstr ""
 
-#: src/lib/dcp_examiner.cc:145
+#: src/lib/dcp_examiner.cc:153
 msgid "Mismatched video sizes in DCP"
 msgstr ""
 
@@ -1044,11 +1051,11 @@ msgstr ""
 msgid "Missing required setting %1"
 msgstr ""
 
-#: src/lib/util.cc:935
+#: src/lib/util.cc:938
 msgid "Monday"
 msgstr ""
 
-#: src/lib/writer.cc:763
+#: src/lib/writer.cc:759
 msgid "Mono"
 msgstr ""
 
@@ -1072,7 +1079,7 @@ msgstr ""
 msgid "Noise reduction"
 msgstr ""
 
-#: src/lib/writer.cc:731 src/lib/writer.cc:738 src/lib/writer.cc:761
+#: src/lib/writer.cc:727 src/lib/writer.cc:734 src/lib/writer.cc:757
 msgid "None"
 msgstr ""
 
@@ -1109,7 +1116,7 @@ msgstr ""
 msgid "P3"
 msgstr ""
 
-#: src/lib/util.h:59
+#: src/lib/util.h:64
 msgid ""
 "Please report this problem by using Help -> Report a problem or via email to "
 "carl@dcpomatic.com"
@@ -1119,7 +1126,7 @@ msgstr ""
 msgid "Policy"
 msgstr ""
 
-#: src/lib/content.cc:480
+#: src/lib/content.cc:484
 msgid "Prepared for video frame rate"
 msgstr ""
 
@@ -1135,7 +1142,7 @@ msgstr ""
 msgid "Public Service Announcement"
 msgstr ""
 
-#: src/lib/ffmpeg_encoder.cc:256 src/lib/util.cc:589
+#: src/lib/ffmpeg_encoder.cc:258 src/lib/util.cc:592
 msgid "R"
 msgstr ""
 
@@ -1147,7 +1154,7 @@ msgstr ""
 msgid "Rating"
 msgstr ""
 
-#: src/lib/util.cc:597
+#: src/lib/util.cc:600
 msgid "Rc"
 msgstr ""
 
@@ -1167,19 +1174,19 @@ msgstr ""
 msgid "Rec. 709"
 msgstr ""
 
-#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:558
+#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:561
 msgid "Right"
 msgstr ""
 
-#: src/lib/util.cc:566
+#: src/lib/util.cc:569
 msgid "Right centre"
 msgstr ""
 
-#: src/lib/util.cc:568
+#: src/lib/util.cc:571
 msgid "Right rear surround"
 msgstr ""
 
-#: src/lib/util.cc:562
+#: src/lib/util.cc:565
 msgid "Right surround"
 msgstr ""
 
@@ -1191,7 +1198,7 @@ msgstr ""
 msgid "Rotate 90 degrees clockwise"
 msgstr ""
 
-#: src/lib/util.cc:593
+#: src/lib/util.cc:596
 msgid "Rs"
 msgstr ""
 
@@ -1216,7 +1223,7 @@ msgstr ""
 msgid "SMPTE 240M"
 msgstr ""
 
-#: src/lib/hints.cc:615
+#: src/lib/hints.cc:612
 msgid ""
 "SMPTE DCPs with the type FTR (feature) should have markers for the first "
 "frame of end credits (FFEC) and the first frame of moving credits (FFMC).  "
@@ -1252,7 +1259,7 @@ msgstr ""
 msgid "SSH error [%1] (%2)"
 msgstr ""
 
-#: src/lib/util.cc:945
+#: src/lib/util.cc:948
 msgid "Saturday"
 msgstr ""
 
@@ -1268,11 +1275,11 @@ msgstr ""
 msgid "Short"
 msgstr ""
 
-#: src/lib/util.cc:602
+#: src/lib/util.cc:605
 msgid "Sign"
 msgstr ""
 
-#: src/lib/video_content.cc:500
+#: src/lib/video_content.cc:510
 msgid "Size"
 msgstr ""
 
@@ -1293,28 +1300,28 @@ msgid ""
 "project in DCP-o-matic, check the settings, then save it before trying again."
 msgstr ""
 
-#: src/lib/hints.cc:554
+#: src/lib/hints.cc:551
 msgid ""
 "Some of your closed captions span more than %1 lines, so they will be "
 "truncated."
 msgstr ""
 
-#: src/lib/hints.cc:653
+#: src/lib/hints.cc:650
 msgid ""
 "Some of your content has audio but you have not set the audio language.  It "
 "is advisable to set the audio language in the \"DCP\" tab unless your audio "
 "has no spoken parts."
 msgstr ""
 
-#: src/lib/film.cc:406
+#: src/lib/film.cc:417
 msgid "Some of your content needs a KDM"
 msgstr ""
 
-#: src/lib/film.cc:409
+#: src/lib/film.cc:420
 msgid "Some of your content needs an OV"
 msgstr ""
 
-#: src/lib/writer.cc:765
+#: src/lib/writer.cc:761
 msgid "Stereo"
 msgstr ""
 
@@ -1326,7 +1333,7 @@ msgstr ""
 msgid "Stereo to 5.1 up-mixer B"
 msgstr ""
 
-#: src/lib/util.cc:933
+#: src/lib/util.cc:936
 msgid "Sunday"
 msgstr ""
 
@@ -1346,7 +1353,7 @@ msgstr ""
 msgid "Text subtitles"
 msgstr ""
 
-#: src/lib/film.cc:389
+#: src/lib/film.cc:400
 msgid "The DCP is empty, perhaps because all the content has zero length."
 msgstr ""
 
@@ -1358,7 +1365,7 @@ msgstr ""
 msgid "The certificate chain for signing is invalid (%1)"
 msgstr ""
 
-#: src/lib/video_decoder.cc:86
+#: src/lib/video_decoder.cc:81
 msgid ""
 "The content file %1 is set as 3D but does not appear to contain 3D images.  "
 "Please set it to 2D.  You can still make a 3D DCP from this content by "
@@ -1387,7 +1394,7 @@ msgstr ""
 msgid "The file %1 has been trimmed by %2 milliseconds more."
 msgstr ""
 
-#: src/lib/hints.cc:241
+#: src/lib/hints.cc:238
 msgid ""
 "There is a large difference between the frame rate of your DCP and that of "
 "some of your content.  This will cause your audio to play back at a much "
@@ -1396,7 +1403,7 @@ msgid ""
 "systems support your chosen DCP rate."
 msgstr ""
 
-#: src/lib/dcp_content.cc:657
+#: src/lib/dcp_content.cc:659
 msgid "There is no video in this DCP"
 msgstr ""
 
@@ -1407,11 +1414,11 @@ msgid ""
 "tab of Preferences."
 msgstr ""
 
-#: src/lib/util.cc:1146
+#: src/lib/util.cc:1150
 msgid "This KDM was made for DCP-o-matic but not for its leaf certificate."
 msgstr ""
 
-#: src/lib/util.cc:1144
+#: src/lib/util.cc:1148
 msgid "This KDM was not made for DCP-o-matic's decryption certificate."
 msgstr ""
 
@@ -1436,20 +1443,20 @@ msgid ""
 "the content and choosing \"Add KDM\"."
 msgstr ""
 
-#: src/lib/film.cc:581
+#: src/lib/film.cc:595
 msgid ""
 "This film was created with a newer version of DCP-o-matic, and it cannot be "
 "loaded into this version.  Sorry!"
 msgstr ""
 
-#: src/lib/film.cc:566
+#: src/lib/film.cc:580
 msgid ""
 "This film was created with an older version of DCP-o-matic, and "
 "unfortunately it cannot be loaded into this version.  You will need to "
 "create a new Film, re-add your content and set it up again.  Sorry!"
 msgstr ""
 
-#: src/lib/util.cc:941
+#: src/lib/util.cc:944
 msgid "Thursday"
 msgstr ""
 
@@ -1469,7 +1476,7 @@ msgstr ""
 msgid "Transitional"
 msgstr ""
 
-#: src/lib/util.cc:937
+#: src/lib/util.cc:940
 msgid "Tuesday"
 msgstr ""
 
@@ -1493,7 +1500,7 @@ msgstr ""
 msgid "Unknown error"
 msgstr ""
 
-#: src/lib/ffmpeg_decoder.cc:343
+#: src/lib/ffmpeg_decoder.cc:339
 msgid "Unrecognised audio sample format (%1)"
 msgstr ""
 
@@ -1513,7 +1520,7 @@ msgstr ""
 msgid "Untitled"
 msgstr ""
 
-#: src/lib/util.cc:571 src/lib/util.cc:572
+#: src/lib/util.cc:574 src/lib/util.cc:575
 msgid "Unused"
 msgstr ""
 
@@ -1525,7 +1532,7 @@ msgstr ""
 msgid "Upmix R"
 msgstr ""
 
-#: src/lib/util.cc:595
+#: src/lib/util.cc:598
 msgid "VI"
 msgstr ""
 
@@ -1537,7 +1544,7 @@ msgstr ""
 msgid "Vertical flip"
 msgstr ""
 
-#: src/lib/util.cc:564
+#: src/lib/util.cc:567
 msgid "Visually impaired"
 msgstr ""
 
@@ -1549,7 +1556,7 @@ msgstr ""
 msgid "Weave filter"
 msgstr ""
 
-#: src/lib/util.cc:939
+#: src/lib/util.cc:942
 msgid "Wednesday"
 msgstr ""
 
@@ -1561,68 +1568,68 @@ msgstr ""
 msgid "Yet Another Deinterlacing Filter"
 msgstr ""
 
-#: src/lib/hints.cc:201
+#: src/lib/hints.cc:198
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You are advised to change the DCP frame rate "
 "to %2 fps."
 msgstr ""
 
-#: src/lib/hints.cc:185
+#: src/lib/hints.cc:182
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You may want to consider changing your frame "
 "rate to %2 fps."
 msgstr ""
 
-#: src/lib/hints.cc:195
+#: src/lib/hints.cc:192
 msgid ""
 "You are set up for a DCP frame rate of 30fps, which is not supported by all "
 "projectors.  Be aware that you may have compatibility problems."
 msgstr ""
 
-#: src/lib/hints.cc:306
+#: src/lib/hints.cc:303
 msgid ""
 "You are using 3D content but your DCP is set to 2D.  Set the DCP to 3D if "
 "you want to play it back on a 3D system (e.g. Real-D, MasterImage etc.)"
 msgstr ""
 
-#: src/lib/hints.cc:122
+#: src/lib/hints.cc:119
 msgid ""
 "You are using DCP-o-matic's stereo-to-5.1 upmixer.  This is experimental and "
 "may result in poor-quality audio.  If you continue, you should listen to the "
 "resulting DCP in a cinema to make sure that it sounds good."
 msgstr ""
 
-#: src/lib/hints.cc:290
+#: src/lib/hints.cc:287
 msgid ""
 "You have %1 files that look like they are VOB files from DVD. You should "
 "join them to ensure smooth joins between the files."
 msgstr ""
 
-#: src/lib/film.cc:1529
+#: src/lib/film.cc:1578
 msgid ""
 "You have more than one piece of Atmos content, and they do not have the same "
 "frame rate.  You must remove some Atmos content."
 msgstr ""
 
-#: src/lib/hints.cc:561
+#: src/lib/hints.cc:558
 msgid ""
 "You have overlapping closed captions, which are not allowed in Interop "
 "DCPs.  Change your DCP standard to SMPTE."
 msgstr ""
 
-#: src/lib/hints.cc:274
+#: src/lib/hints.cc:271
 msgid ""
 "You have specified a font file which is larger than 640kB.  This is very "
 "likely to cause problems on playback."
 msgstr ""
 
-#: src/lib/film.cc:385
+#: src/lib/film.cc:396
 msgid "You must add some content to the DCP before creating it"
 msgstr ""
 
-#: src/lib/hints.cc:112
+#: src/lib/hints.cc:109
 msgid ""
 "Your DCP has fewer than 6 audio channels.  This may cause problems on some "
 "projectors.  You may want to set the DCP to have 6 channels.  It does not "
@@ -1630,19 +1637,19 @@ msgid ""
 "extras with silence."
 msgstr ""
 
-#: src/lib/hints.cc:160
+#: src/lib/hints.cc:157
 msgid ""
 "Your DCP uses an unusual container ratio.  This may cause problems on some "
 "projectors.  If possible, use Flat or Scope for the DCP container ratio."
 msgstr ""
 
-#: src/lib/hints.cc:340
+#: src/lib/hints.cc:337
 msgid ""
 "Your audio level is very high (on %1).  You should reduce the gain of your "
 "audio content."
 msgstr ""
 
-#: src/lib/config.cc:289
+#: src/lib/config.cc:287
 msgid ""
 "Your default container is not valid and has been changed to Flat (1.85:1)"
 msgstr ""
@@ -1666,7 +1673,7 @@ msgstr ""
 msgid "[still]"
 msgstr ""
 
-#: src/lib/dcp_subtitle_content.cc:97 src/lib/string_text_file_content.cc:78
+#: src/lib/dcp_subtitle_content.cc:98 src/lib/string_text_file_content.cc:78
 msgid "[subtitles]"
 msgstr ""
 
@@ -1684,11 +1691,11 @@ msgstr ""
 msgid "connecting"
 msgstr ""
 
-#: src/lib/film.cc:381
+#: src/lib/film.cc:392
 msgid "container"
 msgstr ""
 
-#: src/lib/film.cc:393
+#: src/lib/film.cc:404
 msgid "content type"
 msgstr ""
 
@@ -1740,90 +1747,90 @@ msgstr ""
 msgid "error during async_write (%1)"
 msgstr ""
 
-#: src/lib/content.cc:473 src/lib/content.cc:482
+#: src/lib/content.cc:477 src/lib/content.cc:486
 msgid "frames per second"
 msgstr ""
 
 #. / TRANSLATORS: h here is an abbreviation for hours
-#: src/lib/util.cc:200
+#: src/lib/util.cc:203
 msgid "h"
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:750
+#: src/lib/dcp_content.cc:752
 msgid "it does not have closed captions in all its reels."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:739
+#: src/lib/dcp_content.cc:741
 msgid "it does not have open subtitles in all its reels."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:706
+#: src/lib/dcp_content.cc:708
 msgid "it does not have sound in all its reels."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:610
+#: src/lib/dcp_content.cc:612
 msgid "it has a different frame rate to the film."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:765
+#: src/lib/dcp_content.cc:767
 msgid ""
 "it has a start trim so its subtitles or closed captions must be re-written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:667
+#: src/lib/dcp_content.cc:669
 msgid "it is 2K and the film is 4K."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:664
+#: src/lib/dcp_content.cc:666
 msgid "it is 4K and the film is 2K."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:598
+#: src/lib/dcp_content.cc:600
 msgid "it is Interop and the film is set to SMPTE."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:602
+#: src/lib/dcp_content.cc:604
 msgid "it is SMPTE and the film is set to Interop."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:712
+#: src/lib/dcp_content.cc:714
 msgid "it overlaps other audio content; remove the other content."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:770
+#: src/lib/dcp_content.cc:772
 msgid "it overlaps other text content; remove the other content."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:677
+#: src/lib/dcp_content.cc:679
 msgid "it overlaps other video content; remove the other content."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:633
+#: src/lib/dcp_content.cc:635
 msgid ""
 "its reel lengths differ from those in the film; set the reel mode to 'split "
 "by video content'."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:672
+#: src/lib/dcp_content.cc:674
 msgid "its video frame size differs from the film's."
 msgstr ""
 
 #. / TRANSLATORS: m here is an abbreviation for minutes
-#: src/lib/util.cc:209
+#: src/lib/util.cc:212
 msgid "m"
 msgstr ""
 
@@ -1831,26 +1838,26 @@ msgstr ""
 msgid "moving"
 msgstr ""
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "name"
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:756
+#: src/lib/dcp_content.cc:758
 msgid ""
 "one of its closed caption has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:743
+#: src/lib/dcp_content.cc:745
 msgid ""
 "one of its subtitle reels has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: s here is an abbreviation for seconds
-#: src/lib/util.cc:219
+#: src/lib/util.cc:222
 msgid "s"
 msgstr ""
 
@@ -1858,7 +1865,7 @@ msgstr ""
 msgid "sRGB"
 msgstr ""
 
-#: src/lib/film.cc:402
+#: src/lib/film.cc:413
 msgid "some of your content is missing"
 msgstr ""
 
@@ -1870,6 +1877,6 @@ msgstr ""
 msgid "unknown"
 msgstr ""
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "video frames"
 msgstr ""
diff --git a/src/lib/po/uk_UA.po b/src/lib/po/uk_UA.po
index b3ec53321..d6efd8d12 100644
--- a/src/lib/po/uk_UA.po
+++ b/src/lib/po/uk_UA.po
@@ -3,7 +3,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-08-20 23:10+0200\n"
+"POT-Creation-Date: 2021-10-17 15:26+0200\n"
 "PO-Revision-Date: 2018-08-20 19:32+0300\n"
 "Last-Translator: Igor Voytovich <i.voyt@dualvfilms.com>\n"
 "Language-Team: Українська\n"
@@ -15,7 +15,7 @@ msgstr ""
 "Plural-Forms: nplurals=3; plural=(n%10==1 && n%100!=11 ? 0 : n%10>=2 && n"
 "%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2);\n"
 
-#: src/lib/video_content.cc:486
+#: src/lib/video_content.cc:496
 #, c-format
 msgid ""
 "\n"
@@ -24,7 +24,7 @@ msgstr ""
 "\n"
 "Частота кадрів контенту %.4f\n"
 
-#: src/lib/video_content.cc:451
+#: src/lib/video_content.cc:461
 msgid ""
 "\n"
 "Cropped to %1x%2"
@@ -32,7 +32,7 @@ msgstr ""
 "\n"
 "Розмір при кадруванні: %1x%2"
 
-#: src/lib/video_content.cc:444
+#: src/lib/video_content.cc:452
 #, c-format
 msgid ""
 "\n"
@@ -41,7 +41,7 @@ msgstr ""
 "\n"
 "Співвідношення сторін контенту %.2f:1"
 
-#: src/lib/video_content.cc:474
+#: src/lib/video_content.cc:484
 msgid ""
 "\n"
 "Padded with black to fit container %1 (%2x%3)"
@@ -49,7 +49,7 @@ msgstr ""
 "\n"
 "Заповнено чорним для підгонки контейнера %1 (%2x%3)"
 
-#: src/lib/video_content.cc:464
+#: src/lib/video_content.cc:474
 msgid ""
 "\n"
 "Scaled to %1x%2"
@@ -57,7 +57,7 @@ msgstr ""
 "\n"
 "Розмір при масштабуванні: %1x%2"
 
-#: src/lib/video_content.cc:468 src/lib/video_content.cc:479
+#: src/lib/video_content.cc:478 src/lib/video_content.cc:489
 #, c-format
 msgid " (%.2f:1)"
 msgstr " (%.2f:1)"
@@ -102,7 +102,7 @@ msgstr ""
 msgid "%1 [Atmos]"
 msgstr "%1 [Atmos]"
 
-#: src/lib/dcp_content.cc:318
+#: src/lib/dcp_content.cc:320
 msgid "%1 [DCP]"
 msgstr "%1 [DCP]"
 
@@ -118,7 +118,7 @@ msgstr "%1 [відео]"
 msgid "%1 [video]"
 msgstr "%1 [відео]"
 
-#: src/lib/video_content.cc:439
+#: src/lib/video_content.cc:447
 #, c-format
 msgid ", pixel aspect ratio %.2f:1"
 msgstr ", співвідношення сторін пікселей %.2f:1"
@@ -167,7 +167,7 @@ msgstr "2.39 (Scope)"
 msgid "3D denoiser"
 msgstr "Придушення шуму 3D"
 
-#: src/lib/hints.cc:212
+#: src/lib/hints.cc:209
 msgid ""
 "4K 3D is only supported by a very limited number of projectors.  Unless you "
 "know that you will play this DCP back on a capable projector, it is "
@@ -199,7 +199,7 @@ msgid ""
 "Paypal to donate €10</a></ul><p>Thank you!"
 msgstr ""
 
-#: src/lib/hints.cc:169
+#: src/lib/hints.cc:166
 msgid ""
 "A few projectors have problems playing back very high bit-rate DCPs.  It is "
 "a good idea to drop the JPEG2000 bandwidth down to about 200Mbit/s; this is "
@@ -209,6 +209,13 @@ msgstr ""
 "Гарною ідеєю було б знизити пропускну здатність JPEG2000 до 200Мбит/с; "
 "навряд чи це призведе до помітних змін зображення."
 
+#: src/lib/text_content.cc:248
+msgid ""
+"A subtitle or closed caption file in this project is marked with the "
+"language '%1', which DCP-o-matic does not recognise.  The file's language "
+"has been cleared."
+msgstr ""
+
 #: src/lib/ffmpeg_content.cc:635
 msgid "ARIB STD-B67 ('Hybrid log-gamma')"
 msgstr "ARIB STD-B67 ('Hybrid log-gamma')"
@@ -217,7 +224,7 @@ msgstr "ARIB STD-B67 ('Hybrid log-gamma')"
 msgid "Advertisement"
 msgstr "ADV (Реклама)"
 
-#: src/lib/hints.cc:146
+#: src/lib/hints.cc:143
 msgid ""
 "All of your content is in Scope (2.39:1) but your DCP's container is Flat "
 "(1.85:1).  This will letter-box your content inside a Flat (1.85:1) frame.  "
@@ -228,7 +235,7 @@ msgstr ""
 "означає, що у кадрі зверху та знизу вашого контенту будуть чорні області. Ви "
 "можете змінити формат кадра вашого DCP на SCOPE (2.39:1) на вкладці \"DCP\"."
 
-#: src/lib/hints.cc:150
+#: src/lib/hints.cc:147
 #, fuzzy
 msgid ""
 "All of your content narrower than 1.90:1 but your DCP's container is Scope "
@@ -254,54 +261,54 @@ msgstr "Аналіз аудіо"
 msgid "Analysing subtitles"
 msgstr "Пошук субтитрів"
 
-#: src/lib/hints.cc:368
+#: src/lib/hints.cc:365
 msgid ""
 "At least one marker comes after the end of the project and will be ignored."
 msgstr ""
 
-#: src/lib/hints.cc:473
+#: src/lib/hints.cc:470
 msgid "At least one of your closed caption files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:466
+#: src/lib/hints.cc:463
 msgid "At least one of your closed caption files' XML part is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:481
+#: src/lib/hints.cc:478
 msgid "At least one of your subtitle files is larger than "
 msgstr ""
 
-#: src/lib/hints.cc:445
+#: src/lib/hints.cc:442
 msgid ""
 "At least one of your subtitle lines has more than 52 characters.  It is "
 "recommended to make each line 52 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:447
+#: src/lib/hints.cc:444
 msgid ""
 "At least one of your subtitle lines has more than 79 characters.  You should "
 "make each line 79 characters at most in length."
 msgstr ""
 
-#: src/lib/hints.cc:590
+#: src/lib/hints.cc:587
 msgid ""
 "At least one of your subtitles has more than 3 lines.  It is advisable to "
 "use no more than 3 lines."
 msgstr ""
 
-#: src/lib/hints.cc:580
+#: src/lib/hints.cc:577
 msgid ""
 "At least one of your subtitles lasts less than 15 frames.  It is advisable "
 "to make each subtitle at least 15 frames long."
 msgstr ""
 
-#: src/lib/hints.cc:585
+#: src/lib/hints.cc:582
 msgid ""
 "At least one of your subtitles starts less than 2 frames after the previous "
 "one.  It is advisable to make the gap between subtitles at least 2 frames."
 msgstr ""
 
-#: src/lib/hints.cc:633
+#: src/lib/hints.cc:630
 msgid ""
 "At least one piece of subtitle or closed caption content has no specified "
 "language.  It is advisable to set the language for each piece of subtitle or "
@@ -375,15 +382,15 @@ msgstr "Біт на піксель"
 msgid "Bob Weaver Deinterlacing Filter"
 msgstr "Ще один фільтр деінтерлейсинга"
 
-#: src/lib/util.cc:598
+#: src/lib/util.cc:601
 msgid "BsL"
 msgstr "BsL"
 
-#: src/lib/util.cc:599
+#: src/lib/util.cc:602
 msgid "BsR"
 msgstr "BsR"
 
-#: src/lib/util.cc:590
+#: src/lib/util.cc:593
 msgid "C"
 msgstr "C"
 
@@ -391,7 +398,7 @@ msgstr "C"
 msgid "Cancelled"
 msgstr "Відмінено"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "Cannot contain slashes"
 msgstr "Не може містити слеші"
 
@@ -399,11 +406,11 @@ msgstr "Не може містити слеші"
 msgid "Cannot handle pixel format %1 during %2"
 msgstr "Неможливо обробити формат пікселя %1 під час %2"
 
-#: src/lib/film.cc:1662
+#: src/lib/film.cc:1711
 msgid "Cannot make a KDM as this project is not encrypted."
 msgstr "Не можна створити KDM так як цей проект не зашифрований."
 
-#: src/lib/util.cc:559
+#: src/lib/util.cc:562
 msgid "Centre"
 msgstr "Центральний"
 
@@ -472,7 +479,7 @@ msgstr ""
 msgid "Computing digest"
 msgstr "Перевірка цілостності"
 
-#: src/lib/writer.cc:535
+#: src/lib/writer.cc:531
 msgid "Computing digests"
 msgstr "Перевірка цілостності"
 
@@ -504,24 +511,24 @@ msgid "Content to be joined must all have or not have video"
 msgstr ""
 "Для приєднання цього контенту, всі інші мають містити або не містити відео"
 
-#: src/lib/text_content.cc:305
+#: src/lib/text_content.cc:320
 #, fuzzy
 msgid ""
 "Content to be joined must both be main subtitle languages or both additional."
 msgstr ""
 "Для приєднання контенту має бути такий самий інтервал між рядками субтитрів."
 
-#: src/lib/video_content.cc:207
+#: src/lib/video_content.cc:210
 #, fuzzy
 msgid "Content to be joined must have all its video used or not used."
 msgstr "Для приєднання контенту має бути така сама частота кадрів відео"
 
-#: src/lib/text_content.cc:260
+#: src/lib/text_content.cc:275
 msgid "Content to be joined must have the same 'burn subtitles' setting."
 msgstr ""
 "Для приєднання контенту мають бути такі самі налаштування \"вшити субтитри\"."
 
-#: src/lib/text_content.cc:256
+#: src/lib/text_content.cc:271
 msgid "Content to be joined must have the same 'use subtitles' setting."
 msgstr ""
 "Для приєднання контенту мають бути такі самі налаштування \"використовувати "
@@ -535,67 +542,67 @@ msgstr "Для приєднання контенту має бути така с
 msgid "Content to be joined must have the same audio gain."
 msgstr "Для приєднання контенту має бути таке саме посилення аудіо."
 
-#: src/lib/video_content.cc:239
+#: src/lib/video_content.cc:242
 #, fuzzy
 msgid "Content to be joined must have the same burnt subtitle language."
 msgstr ""
 "Для приєднання контенту мають бути такі самі налаштування \"вшити субтитри\"."
 
-#: src/lib/video_content.cc:231
+#: src/lib/video_content.cc:234
 msgid "Content to be joined must have the same colour conversion."
 msgstr "Для приєднання контенту має бути таке саме перетворення кольору."
 
-#: src/lib/video_content.cc:219
+#: src/lib/video_content.cc:222
 msgid "Content to be joined must have the same crop."
 msgstr "Для приєднання контенту має бути таке саме кадрування."
 
-#: src/lib/video_content.cc:223
+#: src/lib/video_content.cc:226
 #, fuzzy
 msgid "Content to be joined must have the same custom ratio setting."
 msgstr "Для приєднання контенту мають бути такі самі параметри масштабування."
 
-#: src/lib/video_content.cc:227
+#: src/lib/video_content.cc:230
 #, fuzzy
 msgid "Content to be joined must have the same custom size setting."
 msgstr "Для приєднання контенту мають бути такі самі параметри масштабування."
 
-#: src/lib/video_content.cc:235
+#: src/lib/video_content.cc:238
 msgid "Content to be joined must have the same fades."
 msgstr "Для приєднання контенту має бути таке саме згасання."
 
-#: src/lib/text_content.cc:288
+#: src/lib/text_content.cc:303
 msgid "Content to be joined must have the same outline width."
 msgstr "Для приєднання контенту має бути однакова ширина обводки."
 
-#: src/lib/video_content.cc:211
+#: src/lib/video_content.cc:214
 msgid "Content to be joined must have the same picture size."
 msgstr "Для приєднання контенту має бути такий самий розмір зображення."
 
-#: src/lib/text_content.cc:264
+#: src/lib/text_content.cc:279
 msgid "Content to be joined must have the same subtitle X offset."
 msgstr ""
 "Для приєднання контенту має бути таке саме горизонтальне зміщення субтитрів."
 
-#: src/lib/text_content.cc:272
+#: src/lib/text_content.cc:287
 msgid "Content to be joined must have the same subtitle X scale."
 msgstr ""
 "Для приєднання контенту має бути таке саме розмір субтитрів по горизонталі."
 
-#: src/lib/text_content.cc:268
+#: src/lib/text_content.cc:283
 msgid "Content to be joined must have the same subtitle Y offset."
 msgstr ""
 "Для приєднання контенту має бути таке саме вертикальне зміщення субтитрів."
 
-#: src/lib/text_content.cc:276
+#: src/lib/text_content.cc:291
 msgid "Content to be joined must have the same subtitle Y scale."
 msgstr ""
 "Для приєднання контенту має бути таке саме розмір субтитрів по вертикалі."
 
-#: src/lib/text_content.cc:284
+#: src/lib/text_content.cc:299
 msgid "Content to be joined must have the same subtitle fades."
 msgstr "Для приєднання контенту має бути однакове згасання субтитрів."
 
-#: src/lib/text_content.cc:280
+#: src/lib/text_content.cc:295
 msgid "Content to be joined must have the same subtitle line spacing."
 msgstr ""
 "Для приєднання контенту має бути такий самий інтервал між рядками субтитрів."
@@ -604,16 +611,16 @@ msgstr ""
 msgid "Content to be joined must have the same video frame rate"
 msgstr "Для приєднання контенту має бути така сама частота кадрів відео"
 
-#: src/lib/video_content.cc:215
+#: src/lib/video_content.cc:218
 msgid "Content to be joined must have the same video frame type."
 msgstr "Для приєднання контенту має бути такий самий тип відео."
 
-#: src/lib/text_content.cc:297
+#: src/lib/text_content.cc:312
 #, fuzzy
 msgid "Content to be joined must use the same DCP track."
 msgstr "Для приєднання контенту має бути такий самий шрифт."
 
-#: src/lib/text_content.cc:293 src/lib/text_content.cc:313
+#: src/lib/text_content.cc:308 src/lib/text_content.cc:328
 msgid "Content to be joined must use the same fonts."
 msgstr "Для приєднання контенту має бути такий самий шрифт."
 
@@ -621,12 +628,12 @@ msgstr "Для приєднання контенту має бути такий
 msgid "Content to be joined must use the same subtitle stream."
 msgstr "Для приєднання контенту необхідно використовувати ті самі субтитри."
 
-#: src/lib/text_content.cc:301
+#: src/lib/text_content.cc:316
 #, fuzzy
 msgid "Content to be joined must use the same text language."
 msgstr "Для приєднання контенту має бути такий самий шрифт."
 
-#: src/lib/video_content.cc:430
+#: src/lib/video_content.cc:438
 msgid "Content video is %1x%2"
 msgstr "Розмір контенту: %1x%2"
 
@@ -651,7 +658,7 @@ msgstr "Не вдалося підключитися до серверу %1 (%2)
 msgid "Could not create remote directory %1 (%2)"
 msgstr "Не вдалося створити віддалений каталог %1 (%2)"
 
-#: src/lib/image_examiner.cc:65
+#: src/lib/image_examiner.cc:64
 msgid "Could not decode JPEG2000 file %1 (%2)"
 msgstr "Не вдалось декодувати JPEG2000-файл %1 (%2)"
 
@@ -690,7 +697,7 @@ msgstr "Не вдалося відкрити завантажений ZIP-арх
 msgid "Could not open file for writing"
 msgstr "не вдалося відкрити файл %1 для запису (%2)"
 
-#: src/lib/ffmpeg_file_encoder.cc:269
+#: src/lib/ffmpeg_file_encoder.cc:265
 #, fuzzy
 msgid "Could not open output file %1 (%2)"
 msgstr "не вдалося записати в файл %1 (%2)"
@@ -707,19 +714,19 @@ msgstr "Не вдалося почати передачу"
 msgid "Could not write to remote file (%1)"
 msgstr "Не вдалося записати в віддалений файл (%1)"
 
-#: src/lib/util.cc:569
+#: src/lib/util.cc:572
 msgid "D-BOX primary"
 msgstr "D-BOX основний (DBP)"
 
-#: src/lib/util.cc:570
+#: src/lib/util.cc:573
 msgid "D-BOX secondary"
 msgstr "D-BOX другорядний (DBS)"
 
-#: src/lib/util.cc:600
+#: src/lib/util.cc:603
 msgid "DBP"
 msgstr "DBP"
 
-#: src/lib/util.cc:601
+#: src/lib/util.cc:604
 msgid "DBS"
 msgstr "DBS"
 
@@ -731,7 +738,7 @@ msgstr "DCI Flat"
 msgid "DCI Scope"
 msgstr "DCI Scope"
 
-#: src/lib/dcp_subtitle_content.cc:103
+#: src/lib/dcp_subtitle_content.cc:104
 msgid "DCP XML subtitles"
 msgstr "DCP XML субтитри"
 
@@ -756,13 +763,13 @@ msgstr ""
 "DCP-o-matic не вдалося відкрити файл %1 (%2). Можливо він не існує або має "
 "неочікуваний формат."
 
-#: src/lib/film.cc:1565
+#: src/lib/film.cc:1614
 msgid ""
 "DCP-o-matic had to change your settings for referring to DCPs as OV.  Please "
 "review those settings to make sure they are what you want."
 msgstr ""
 
-#: src/lib/film.cc:1533
+#: src/lib/film.cc:1582
 msgid ""
 "DCP-o-matic had to change your settings so that the film's frame rate is the "
 "same as that of your Atmos content."
@@ -773,7 +780,7 @@ msgid ""
 "DCP-o-matic no longer supports the `%1' filter, so it has been turned off."
 msgstr "DCP-o-matic більше не підтримує фильтр `%1', тому він був вимкнений."
 
-#: src/lib/config.cc:359 src/lib/config.cc:1114
+#: src/lib/config.cc:357 src/lib/config.cc:1114
 msgid "DCP-o-matic notification"
 msgstr "Повідомлення DCP-o-matic"
 
@@ -867,7 +874,7 @@ msgstr "Помилка у файлі субтитрів: знайдено %1, о
 msgid "Error: %1"
 msgstr "Помилка: (%1)"
 
-#: src/lib/hints.cc:408
+#: src/lib/hints.cc:405
 msgid "Examining audio, subtitles and closed captions"
 msgstr ""
 
@@ -881,7 +888,7 @@ msgstr "Перевірка контенту"
 msgid "Examining subtitles"
 msgstr "Пошук субтитрів"
 
-#: src/lib/hints.cc:406
+#: src/lib/hints.cc:403
 #, fuzzy
 msgid "Examining subtitles and closed captions"
 msgstr "Пошук субтитрів"
@@ -913,7 +920,7 @@ msgstr "Помилка відправки email (%1)"
 msgid "Feature"
 msgstr "FTR (Фільм)"
 
-#: src/lib/content.cc:464
+#: src/lib/content.cc:468
 msgid "Filename"
 msgstr "Ім`я файлу"
 
@@ -925,11 +932,11 @@ msgstr "Проект"
 msgid "Finding length"
 msgstr "Расчет длительности"
 
-#: src/lib/content.cc:471
+#: src/lib/content.cc:475
 msgid "Frame rate"
 msgstr "Частота кадрів"
 
-#: src/lib/util.cc:943
+#: src/lib/util.cc:946
 msgid "Friday"
 msgstr "П'ятниця"
 
@@ -973,11 +980,11 @@ msgstr "Гамма 28 (BT470BG)"
 msgid "Gradient debander"
 msgstr "Розбиття градієнта"
 
-#: src/lib/util.cc:594
+#: src/lib/util.cc:597
 msgid "HI"
 msgstr "HI"
 
-#: src/lib/util.cc:563
+#: src/lib/util.cc:566
 msgid "Hearing impaired"
 msgstr "Для людей з вадами слуху"
 
@@ -1001,18 +1008,18 @@ msgstr "IEC61966-2-1 (sRGB или sYCC)"
 msgid "IEC61966-2-4"
 msgstr "IEC61966-2-4"
 
-#: src/lib/hints.cc:188
+#: src/lib/hints.cc:185
 msgid "If you do use 25fps you should change your DCP standard to SMPTE."
 msgstr ""
 
-#: src/lib/hints.cc:251
+#: src/lib/hints.cc:248
 msgid ""
 "In general it is now advisable to make SMPTE DCPs unless you have a "
 "particular reason to use Interop.  You are advised to set your DCP to use "
 "the SMPTE standard in the \"DCP\" tab."
 msgstr ""
 
-#: src/lib/hints.cc:573
+#: src/lib/hints.cc:570
 msgid ""
 "It is advisable to put your first subtitle at least 4 seconds after the "
 "start of the DCP to make sure it is seen."
@@ -1026,7 +1033,7 @@ msgstr "Невідомо, що викликало цю помилку."
 msgid "JEDEC P22"
 msgstr "JEDEC P22"
 
-#: src/lib/config.cc:349 src/lib/config.cc:1099
+#: src/lib/config.cc:347 src/lib/config.cc:1099
 msgid "KDM delivery: $CPL_NAME"
 msgstr "Призначення KDM: $CPL_NAME"
 
@@ -1034,39 +1041,39 @@ msgstr "Призначення KDM: $CPL_NAME"
 msgid "Kernel deinterlacer"
 msgstr "Деинтерлейсинг ядром"
 
-#: src/lib/ffmpeg_encoder.cc:251 src/lib/util.cc:588
+#: src/lib/ffmpeg_encoder.cc:253 src/lib/util.cc:591
 msgid "L"
 msgstr "L"
 
-#: src/lib/util.cc:596
+#: src/lib/util.cc:599
 msgid "Lc"
 msgstr "Lc"
 
-#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:557
+#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:560
 msgid "Left"
 msgstr "Лівий"
 
-#: src/lib/util.cc:565
+#: src/lib/util.cc:568
 msgid "Left centre"
 msgstr "Лівий центральний"
 
-#: src/lib/util.cc:567
+#: src/lib/util.cc:570
 msgid "Left rear surround"
 msgstr "Лівий тиловий surround"
 
-#: src/lib/util.cc:561
+#: src/lib/util.cc:564
 msgid "Left surround"
 msgstr "Лівий surround"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "Length"
 msgstr "Тривалість"
 
-#: src/lib/util.cc:591
+#: src/lib/util.cc:594
 msgid "Lfe"
 msgstr "LFE"
 
-#: src/lib/util.cc:560
+#: src/lib/util.cc:563
 msgid "Lfe (sub)"
 msgstr "НЧ (sub)"
 
@@ -1090,11 +1097,11 @@ msgstr "Логаріфмічний (діапазон 100:1)"
 msgid "Logarithmic (316:1 range)"
 msgstr "Логаріфмічний (діапазон 316:1)"
 
-#: src/lib/exceptions.cc:145
+#: src/lib/exceptions.cc:152
 msgid "Lost communication between main and writer processes"
 msgstr ""
 
-#: src/lib/util.cc:592
+#: src/lib/util.cc:595
 msgid "Ls"
 msgstr "Ls"
 
@@ -1106,19 +1113,19 @@ msgstr "Mid-side декодер"
 msgid "Misc"
 msgstr "Різне"
 
-#: src/lib/dcp_examiner.cc:164
+#: src/lib/dcp_examiner.cc:175
 msgid "Mismatched audio channel counts in DCP"
 msgstr "Невідповідна кількість аудіоканалів в DCP"
 
-#: src/lib/dcp_examiner.cc:170
+#: src/lib/dcp_examiner.cc:181
 msgid "Mismatched audio sample rates in DCP"
 msgstr "Невідповідність частоти дискретизації аудіо в DCP"
 
-#: src/lib/dcp_examiner.cc:137
+#: src/lib/dcp_examiner.cc:145
 msgid "Mismatched frame rates in DCP"
 msgstr "Невідповідність частоти кадрів в DCP"
 
-#: src/lib/dcp_examiner.cc:145
+#: src/lib/dcp_examiner.cc:153
 msgid "Mismatched video sizes in DCP"
 msgstr "Невідповідність розміру відео в DCP"
 
@@ -1126,11 +1133,11 @@ msgstr "Невідповідність розміру відео в DCP"
 msgid "Missing required setting %1"
 msgstr "Відсутнє обов'язкове налаштування %1"
 
-#: src/lib/util.cc:935
+#: src/lib/util.cc:938
 msgid "Monday"
 msgstr "Понеділок"
 
-#: src/lib/writer.cc:763
+#: src/lib/writer.cc:759
 msgid "Mono"
 msgstr "Моно"
 
@@ -1154,7 +1161,7 @@ msgstr "У папці не знайдено відповідних зображ�
 msgid "Noise reduction"
 msgstr "Придушення шуму"
 
-#: src/lib/writer.cc:731 src/lib/writer.cc:738 src/lib/writer.cc:761
+#: src/lib/writer.cc:727 src/lib/writer.cc:734 src/lib/writer.cc:757
 msgid "None"
 msgstr "Нічого"
 
@@ -1192,7 +1199,7 @@ msgstr "Надповне придушення шуму невеликої хви
 msgid "P3"
 msgstr "P3"
 
-#: src/lib/util.h:59
+#: src/lib/util.h:64
 msgid ""
 "Please report this problem by using Help -> Report a problem or via email to "
 "carl@dcpomatic.com"
@@ -1202,7 +1209,7 @@ msgstr ""
 msgid "Policy"
 msgstr "POL (Стратегічний)"
 
-#: src/lib/content.cc:480
+#: src/lib/content.cc:484
 msgid "Prepared for video frame rate"
 msgstr "Підготовлене для частоти кадрів відео"
 
@@ -1218,7 +1225,7 @@ msgstr ""
 msgid "Public Service Announcement"
 msgstr "PSA (Соціальна реклама)"
 
-#: src/lib/ffmpeg_encoder.cc:256 src/lib/util.cc:589
+#: src/lib/ffmpeg_encoder.cc:258 src/lib/util.cc:592
 msgid "R"
 msgstr "R"
 
@@ -1230,7 +1237,7 @@ msgstr "RGB / sRGB (IEC61966-2-1)"
 msgid "Rating"
 msgstr "RTG (Рейтинг)"
 
-#: src/lib/util.cc:597
+#: src/lib/util.cc:600
 msgid "Rc"
 msgstr "Rc"
 
@@ -1250,19 +1257,19 @@ msgstr "Rec. 601"
 msgid "Rec. 709"
 msgstr "Rec. 709"
 
-#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:558
+#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:561
 msgid "Right"
 msgstr "Правий"
 
-#: src/lib/util.cc:566
+#: src/lib/util.cc:569
 msgid "Right centre"
 msgstr "Правий центральний"
 
-#: src/lib/util.cc:568
+#: src/lib/util.cc:571
 msgid "Right rear surround"
 msgstr "Правий тиловий surround"
 
-#: src/lib/util.cc:562
+#: src/lib/util.cc:565
 msgid "Right surround"
 msgstr "Правий surround"
 
@@ -1274,7 +1281,7 @@ msgstr "Повернути на 90º проти часової стрілкі"
 msgid "Rotate 90 degrees clockwise"
 msgstr "Повернути на 90º по часовій стрілці"
 
-#: src/lib/util.cc:593
+#: src/lib/util.cc:596
 msgid "Rs"
 msgstr "Rs"
 
@@ -1299,7 +1306,7 @@ msgstr "SMPTE 2085, Y'D'zD'x"
 msgid "SMPTE 240M"
 msgstr "SMPTE 240M"
 
-#: src/lib/hints.cc:615
+#: src/lib/hints.cc:612
 msgid ""
 "SMPTE DCPs with the type FTR (feature) should have markers for the first "
 "frame of end credits (FFEC) and the first frame of moving credits (FFMC).  "
@@ -1337,7 +1344,7 @@ msgstr "Помилка SSH (%1)"
 msgid "SSH error [%1] (%2)"
 msgstr "Помилка SSH (%1)"
 
-#: src/lib/util.cc:945
+#: src/lib/util.cc:948
 msgid "Saturday"
 msgstr "Субота"
 
@@ -1353,11 +1360,11 @@ msgstr "Відправка пошти"
 msgid "Short"
 msgstr "SHR (Короткометражний фільм)"
 
-#: src/lib/util.cc:602
+#: src/lib/util.cc:605
 msgid "Sign"
 msgstr ""
 
-#: src/lib/video_content.cc:500
+#: src/lib/video_content.cc:510
 msgid "Size"
 msgstr "Розмір"
 
@@ -1378,28 +1385,28 @@ msgid ""
 "project in DCP-o-matic, check the settings, then save it before trying again."
 msgstr ""
 
-#: src/lib/hints.cc:554
+#: src/lib/hints.cc:551
 msgid ""
 "Some of your closed captions span more than %1 lines, so they will be "
 "truncated."
 msgstr ""
 
-#: src/lib/hints.cc:653
+#: src/lib/hints.cc:650
 msgid ""
 "Some of your content has audio but you have not set the audio language.  It "
 "is advisable to set the audio language in the \"DCP\" tab unless your audio "
 "has no spoken parts."
 msgstr ""
 
-#: src/lib/film.cc:406
+#: src/lib/film.cc:417
 msgid "Some of your content needs a KDM"
 msgstr "Частина вашого контенту потребує KDM"
 
-#: src/lib/film.cc:409
+#: src/lib/film.cc:420
 msgid "Some of your content needs an OV"
 msgstr "Часть вашего контента требует OV"
 
-#: src/lib/writer.cc:765
+#: src/lib/writer.cc:761
 msgid "Stereo"
 msgstr "Стерео"
 
@@ -1411,7 +1418,7 @@ msgstr "Перетворювач A стерео-->5.1"
 msgid "Stereo to 5.1 up-mixer B"
 msgstr "Перетворювач B стерео-->5.1"
 
-#: src/lib/util.cc:933
+#: src/lib/util.cc:936
 msgid "Sunday"
 msgstr "Неділя"
 
@@ -1431,7 +1438,7 @@ msgstr "TST (Тестовий)"
 msgid "Text subtitles"
 msgstr "Текстові субтитри"
 
-#: src/lib/film.cc:389
+#: src/lib/film.cc:400
 msgid "The DCP is empty, perhaps because all the content has zero length."
 msgstr ""
 
@@ -1443,7 +1450,7 @@ msgstr "Ланцюг сертифікатів для підпису невірн
 msgid "The certificate chain for signing is invalid (%1)"
 msgstr "Ланцюг сертифікатів для підпису невірний (%1)"
 
-#: src/lib/video_decoder.cc:86
+#: src/lib/video_decoder.cc:81
 msgid ""
 "The content file %1 is set as 3D but does not appear to contain 3D images.  "
 "Please set it to 2D.  You can still make a 3D DCP from this content by "
@@ -1474,7 +1481,7 @@ msgstr "Файл %1 був обрізаний на %2 мілісекунд ме�
 msgid "The file %1 has been trimmed by %2 milliseconds more."
 msgstr "Файл %1 був обрізаний на %2 мілісекунд більше."
 
-#: src/lib/hints.cc:241
+#: src/lib/hints.cc:238
 msgid ""
 "There is a large difference between the frame rate of your DCP and that of "
 "some of your content.  This will cause your audio to play back at a much "
@@ -1488,7 +1495,7 @@ msgstr ""
 "вашого контенту, при умові, що ваша цільова проекційна система підтримує "
 "обрану вами швидкість DCP."
 
-#: src/lib/dcp_content.cc:657
+#: src/lib/dcp_content.cc:659
 msgid "There is no video in this DCP"
 msgstr "У даному DCP немає відео"
 
@@ -1502,11 +1509,11 @@ msgstr ""
 "спробуйте зменшити кількість потоків кодування у \"Налаштуваннях\" у вкладці "
 "\"Основні\"."
 
-#: src/lib/util.cc:1146
+#: src/lib/util.cc:1150
 msgid "This KDM was made for DCP-o-matic but not for its leaf certificate."
 msgstr ""
 
-#: src/lib/util.cc:1144
+#: src/lib/util.cc:1148
 msgid "This KDM was not made for DCP-o-matic's decryption certificate."
 msgstr ""
 
@@ -1533,7 +1540,7 @@ msgstr ""
 "Цей файл - ключ (KDM). Ключі додаються до DCP натисканням правої клавіші на "
 "контент і вибором «Додати KDM» у контекстному меню."
 
-#: src/lib/film.cc:581
+#: src/lib/film.cc:595
 msgid ""
 "This film was created with a newer version of DCP-o-matic, and it cannot be "
 "loaded into this version.  Sorry!"
@@ -1541,7 +1548,7 @@ msgstr ""
 "Проект був створений більш новою версією DCP-o-matic і не може бути "
 "завантажений цією версією. Вибачте!"
 
-#: src/lib/film.cc:566
+#: src/lib/film.cc:580
 msgid ""
 "This film was created with an older version of DCP-o-matic, and "
 "unfortunately it cannot be loaded into this version.  You will need to "
@@ -1551,7 +1558,7 @@ msgstr ""
 "бути завантажений цією версією. Вам необхідно створити новий проект, "
 "повторно додати контент та налаштувати його. Вибачте!"
 
-#: src/lib/util.cc:941
+#: src/lib/util.cc:944
 msgid "Thursday"
 msgstr "Четвер"
 
@@ -1572,7 +1579,7 @@ msgstr "Транскодування %1"
 msgid "Transitional"
 msgstr "XSN (Транзитний)"
 
-#: src/lib/util.cc:937
+#: src/lib/util.cc:940
 msgid "Tuesday"
 msgstr "Вівторок"
 
@@ -1597,7 +1604,7 @@ msgstr "невідомо"
 msgid "Unknown error"
 msgstr "Невідома помилка"
 
-#: src/lib/ffmpeg_decoder.cc:343
+#: src/lib/ffmpeg_decoder.cc:339
 msgid "Unrecognised audio sample format (%1)"
 msgstr "Нерозпізнаний формат аудіо (%1)"
 
@@ -1617,7 +1624,7 @@ msgstr "Не визначено"
 msgid "Untitled"
 msgstr "Безіменний"
 
-#: src/lib/util.cc:571 src/lib/util.cc:572
+#: src/lib/util.cc:574 src/lib/util.cc:575
 msgid "Unused"
 msgstr "Не використовується"
 
@@ -1629,7 +1636,7 @@ msgstr "Перевторити Л"
 msgid "Upmix R"
 msgstr "Перевторити П"
 
-#: src/lib/util.cc:595
+#: src/lib/util.cc:598
 msgid "VI"
 msgstr "VI"
 
@@ -1641,7 +1648,7 @@ msgstr "Перевірити DCP"
 msgid "Vertical flip"
 msgstr "Перевернути по вертикалі"
 
-#: src/lib/util.cc:564
+#: src/lib/util.cc:567
 msgid "Visually impaired"
 msgstr "Для людей з вадами зору"
 
@@ -1653,7 +1660,7 @@ msgstr "Очікування"
 msgid "Weave filter"
 msgstr "Фільтр Weave"
 
-#: src/lib/util.cc:939
+#: src/lib/util.cc:942
 msgid "Wednesday"
 msgstr "Середа"
 
@@ -1665,7 +1672,7 @@ msgstr "YCOCG"
 msgid "Yet Another Deinterlacing Filter"
 msgstr "Ще один фільтр деінтерлейсинга"
 
-#: src/lib/hints.cc:201
+#: src/lib/hints.cc:198
 #, fuzzy
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
@@ -1675,7 +1682,7 @@ msgstr ""
 "Ви обрали для Interop DCP частоту кадрів, яка офіційно не підтримується. "
 "Радимо змінити частоту кадрів вашого DCP або замість цього зробити SMPTE DCP."
 
-#: src/lib/hints.cc:185
+#: src/lib/hints.cc:182
 #, fuzzy
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
@@ -1685,7 +1692,7 @@ msgstr ""
 "Ви обрали для Interop DCP частоту кадрів, яка офіційно не підтримується. "
 "Радимо змінити частоту кадрів вашого DCP або замість цього зробити SMPTE DCP."
 
-#: src/lib/hints.cc:195
+#: src/lib/hints.cc:192
 #, fuzzy
 msgid ""
 "You are set up for a DCP frame rate of 30fps, which is not supported by all "
@@ -1694,7 +1701,7 @@ msgstr ""
 "Ви обрали для Interop DCP частоту кадрів, яка офіційно не підтримується. "
 "Радимо змінити частоту кадрів вашого DCP або замість цього зробити SMPTE DCP."
 
-#: src/lib/hints.cc:306
+#: src/lib/hints.cc:303
 msgid ""
 "You are using 3D content but your DCP is set to 2D.  Set the DCP to 3D if "
 "you want to play it back on a 3D system (e.g. Real-D, MasterImage etc.)"
@@ -1703,7 +1710,7 @@ msgstr ""
 "3D, якщо хочете відтворити його на 3D-системі (напр. Real-D, MasterImage і т."
 "п.)"
 
-#: src/lib/hints.cc:122
+#: src/lib/hints.cc:119
 msgid ""
 "You are using DCP-o-matic's stereo-to-5.1 upmixer.  This is experimental and "
 "may result in poor-quality audio.  If you continue, you should listen to the "
@@ -1714,7 +1721,7 @@ msgstr ""
 "продовжите, ви маєте прослухати отриманий DCP у кінотеатрі, щоб впевнитись, "
 "що він звучить добре."
 
-#: src/lib/hints.cc:290
+#: src/lib/hints.cc:287
 msgid ""
 "You have %1 files that look like they are VOB files from DVD. You should "
 "join them to ensure smooth joins between the files."
@@ -1722,19 +1729,19 @@ msgstr ""
 "У вас %1 файлів, які схожі на VOB-файли з DVD. Вам необхідно об'єднати "
 "(приєднати) їх, щоб гарантувати гладке з'єднання між файлами."
 
-#: src/lib/film.cc:1529
+#: src/lib/film.cc:1578
 msgid ""
 "You have more than one piece of Atmos content, and they do not have the same "
 "frame rate.  You must remove some Atmos content."
 msgstr ""
 
-#: src/lib/hints.cc:561
+#: src/lib/hints.cc:558
 msgid ""
 "You have overlapping closed captions, which are not allowed in Interop "
 "DCPs.  Change your DCP standard to SMPTE."
 msgstr ""
 
-#: src/lib/hints.cc:274
+#: src/lib/hints.cc:271
 msgid ""
 "You have specified a font file which is larger than 640kB.  This is very "
 "likely to cause problems on playback."
@@ -1742,11 +1749,11 @@ msgstr ""
 "Вы вибрали шрифт, розмір якого більше 640 кБ. Висока вірогідність, що це "
 "викликає проблеми при відтворенні."
 
-#: src/lib/film.cc:385
+#: src/lib/film.cc:396
 msgid "You must add some content to the DCP before creating it"
 msgstr "Вам необхідно додати контент в DCP перед його створенням"
 
-#: src/lib/hints.cc:112
+#: src/lib/hints.cc:109
 msgid ""
 "Your DCP has fewer than 6 audio channels.  This may cause problems on some "
 "projectors.  You may want to set the DCP to have 6 channels.  It does not "
@@ -1754,7 +1761,7 @@ msgid ""
 "extras with silence."
 msgstr ""
 
-#: src/lib/hints.cc:160
+#: src/lib/hints.cc:157
 #, fuzzy
 msgid ""
 "Your DCP uses an unusual container ratio.  This may cause problems on some "
@@ -1764,7 +1771,7 @@ msgstr ""
 "призвести к проблемам на деяких проекторах. Якщо можливо, використовуйте "
 "співвідношення сторін Flat або Scope для DCP"
 
-#: src/lib/hints.cc:340
+#: src/lib/hints.cc:337
 msgid ""
 "Your audio level is very high (on %1).  You should reduce the gain of your "
 "audio content."
@@ -1772,7 +1779,7 @@ msgstr ""
 "Рівень вашого аудіо занадто високий (на %1). Вам варто знизити рівень "
 "гучності вашого аудіо-контенту."
 
-#: src/lib/config.cc:289
+#: src/lib/config.cc:287
 msgid ""
 "Your default container is not valid and has been changed to Flat (1.85:1)"
 msgstr ""
@@ -1802,7 +1809,7 @@ msgstr "[послідовність]"
 msgid "[still]"
 msgstr "[статичний]"
 
-#: src/lib/dcp_subtitle_content.cc:97 src/lib/string_text_file_content.cc:78
+#: src/lib/dcp_subtitle_content.cc:98 src/lib/string_text_file_content.cc:78
 msgid "[subtitles]"
 msgstr "[субтитри]"
 
@@ -1820,11 +1827,11 @@ msgstr "таймаут з'єднання"
 msgid "connecting"
 msgstr "з'єднання"
 
-#: src/lib/film.cc:381
+#: src/lib/film.cc:392
 msgid "container"
 msgstr "контейнер"
 
-#: src/lib/film.cc:393
+#: src/lib/film.cc:404
 msgid "content type"
 msgstr "тип контенту"
 
@@ -1880,84 +1887,84 @@ msgstr "помилка під час async_read (%1)"
 msgid "error during async_write (%1)"
 msgstr "помилка під час async_write (%1)"
 
-#: src/lib/content.cc:473 src/lib/content.cc:482
+#: src/lib/content.cc:477 src/lib/content.cc:486
 msgid "frames per second"
 msgstr "кадра(ів) в секунду"
 
 #. / TRANSLATORS: h here is an abbreviation for hours
-#: src/lib/util.cc:200
+#: src/lib/util.cc:203
 msgid "h"
 msgstr "г"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:750
+#: src/lib/dcp_content.cc:752
 #, fuzzy
 msgid "it does not have closed captions in all its reels."
 msgstr "у всіх бобінах відсутній звук."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:739
+#: src/lib/dcp_content.cc:741
 #, fuzzy
 msgid "it does not have open subtitles in all its reels."
 msgstr "у всіх бобінах відсутні субтитри."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:706
+#: src/lib/dcp_content.cc:708
 msgid "it does not have sound in all its reels."
 msgstr "у всіх бобінах відсутній звук."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:610
+#: src/lib/dcp_content.cc:612
 #, fuzzy
 msgid "it has a different frame rate to the film."
 msgstr "частота кадрів проекту відрізняється від частоти кадрів DCP."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:765
+#: src/lib/dcp_content.cc:767
 msgid ""
 "it has a start trim so its subtitles or closed captions must be re-written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:667
+#: src/lib/dcp_content.cc:669
 #, fuzzy
 msgid "it is 2K and the film is 4K."
 msgstr "є Interop , а проект настроений як SMPTE."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:664
+#: src/lib/dcp_content.cc:666
 #, fuzzy
 msgid "it is 4K and the film is 2K."
 msgstr "є Interop , а проект настроений як SMPTE."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:598
+#: src/lib/dcp_content.cc:600
 msgid "it is Interop and the film is set to SMPTE."
 msgstr "є Interop , а проект настроений як SMPTE."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:602
+#: src/lib/dcp_content.cc:604
 msgid "it is SMPTE and the film is set to Interop."
 msgstr "є SMPTE, а проект настроений як Interop."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:712
+#: src/lib/dcp_content.cc:714
 msgid "it overlaps other audio content; remove the other content."
 msgstr "перекриває інший аудіо-контент; приберіть інший аудіо-контент."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:770
+#: src/lib/dcp_content.cc:772
 #, fuzzy
 msgid "it overlaps other text content; remove the other content."
 msgstr "перекриває інший відео-контент; приберіть інший відео-контент."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:677
+#: src/lib/dcp_content.cc:679
 msgid "it overlaps other video content; remove the other content."
 msgstr "перекриває інший відео-контент; приберіть інший відео-контент."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:633
+#: src/lib/dcp_content.cc:635
 msgid ""
 "its reel lengths differ from those in the film; set the reel mode to 'split "
 "by video content'."
@@ -1966,12 +1973,12 @@ msgstr ""
 "бобін «Розділяти по відео-контенту»."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:672
+#: src/lib/dcp_content.cc:674
 msgid "its video frame size differs from the film's."
 msgstr "розмір кадру відео у проекті відрізняється вид розміру відео DCP."
 
 #. / TRANSLATORS: m here is an abbreviation for minutes
-#: src/lib/util.cc:209
+#: src/lib/util.cc:212
 msgid "m"
 msgstr "м"
 
@@ -1979,26 +1986,26 @@ msgstr "м"
 msgid "moving"
 msgstr "послідовність"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "name"
 msgstr "назва"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:756
+#: src/lib/dcp_content.cc:758
 msgid ""
 "one of its closed caption has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:743
+#: src/lib/dcp_content.cc:745
 msgid ""
 "one of its subtitle reels has a non-zero entry point so it must be re-"
 "written."
 msgstr ""
 
 #. / TRANSLATORS: s here is an abbreviation for seconds
-#: src/lib/util.cc:219
+#: src/lib/util.cc:222
 msgid "s"
 msgstr "с"
 
@@ -2006,7 +2013,7 @@ msgstr "с"
 msgid "sRGB"
 msgstr "sRGB"
 
-#: src/lib/film.cc:402
+#: src/lib/film.cc:413
 msgid "some of your content is missing"
 msgstr "частина вашого контенту відсутня"
 
@@ -2018,7 +2025,7 @@ msgstr "статичний"
 msgid "unknown"
 msgstr "невідомо"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "video frames"
 msgstr "відеокадри"
 
diff --git a/src/lib/po/zh_CN.po b/src/lib/po/zh_CN.po
index 0e54d154b..3d8f52730 100644
--- a/src/lib/po/zh_CN.po
+++ b/src/lib/po/zh_CN.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: LIBDCPOMATIC\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-08-20 23:10+0200\n"
+"POT-Creation-Date: 2021-10-17 15:26+0200\n"
 "PO-Revision-Date: 2021-09-02 16:54+0800\n"
 "Last-Translator: kahn <bnm14744@gmail.com>\n"
 "Language-Team: Hanyuan\n"
@@ -19,7 +19,7 @@ msgstr ""
 "Plural-Forms: nplurals=1; plural=0;\n"
 "X-Poedit-SourceCharset: UTF-8\n"
 
-#: src/lib/video_content.cc:486
+#: src/lib/video_content.cc:496
 #, c-format
 msgid ""
 "\n"
@@ -28,7 +28,7 @@ msgstr ""
 "\n"
 "源视频帧率 %.4f\n"
 
-#: src/lib/video_content.cc:451
+#: src/lib/video_content.cc:461
 msgid ""
 "\n"
 "Cropped to %1x%2"
@@ -36,7 +36,7 @@ msgstr ""
 "\n"
 "裁剪为%1x%2"
 
-#: src/lib/video_content.cc:444
+#: src/lib/video_content.cc:452
 #, c-format
 msgid ""
 "\n"
@@ -45,7 +45,7 @@ msgstr ""
 "\n"
 "显示宽高比 %.2f:1"
 
-#: src/lib/video_content.cc:474
+#: src/lib/video_content.cc:484
 msgid ""
 "\n"
 "Padded with black to fit container %1 (%2x%3)"
@@ -53,7 +53,7 @@ msgstr ""
 "\n"
 "填充为黑色，以适应打包宽高比 %1 (%2x%3)"
 
-#: src/lib/video_content.cc:464
+#: src/lib/video_content.cc:474
 msgid ""
 "\n"
 "Scaled to %1x%2"
@@ -61,7 +61,7 @@ msgstr ""
 "\n"
 "缩放到 %1x%2"
 
-#: src/lib/video_content.cc:468 src/lib/video_content.cc:479
+#: src/lib/video_content.cc:478 src/lib/video_content.cc:489
 #, c-format
 msgid " (%.2f:1)"
 msgstr " (%.2f:1)"
@@ -106,7 +106,7 @@ msgstr "%1 (%2 GB) [%3]"
 msgid "%1 [Atmos]"
 msgstr "%1 [全景声]"
 
-#: src/lib/dcp_content.cc:318
+#: src/lib/dcp_content.cc:320
 msgid "%1 [DCP]"
 msgstr "%1 [DCP]"
 
@@ -122,7 +122,7 @@ msgstr "%1 [影片]"
 msgid "%1 [video]"
 msgstr "%1 [视频]"
 
-#: src/lib/video_content.cc:439
+#: src/lib/video_content.cc:447
 #, c-format
 msgid ", pixel aspect ratio %.2f:1"
 msgstr ", 像素宽高比 %.2f:1"
@@ -171,7 +171,7 @@ msgstr "2.39 (Scope)"
 msgid "3D denoiser"
 msgstr "3D 降噪"
 
-#: src/lib/hints.cc:212
+#: src/lib/hints.cc:209
 msgid ""
 "4K 3D is only supported by a very limited number of projectors.  Unless you "
 "know that you will play this DCP back on a capable projector, it is "
@@ -214,7 +214,7 @@ msgstr ""
 "</a><li><a href=“https://dcpomatic.com/donate_amount?amount=10”>去贝宝"
 "(Paypal)捐款10欧元</a></ul><p>谢谢您"
 
-#: src/lib/hints.cc:169
+#: src/lib/hints.cc:166
 msgid ""
 "A few projectors have problems playing back very high bit-rate DCPs.  It is "
 "a good idea to drop the JPEG2000 bandwidth down to about 200Mbit/s; this is "
@@ -223,6 +223,13 @@ msgstr ""
 "有些放映设备不支持高码率DCP,我们推荐使用200Mbit/s以内的码率来进行打包，这种细"
 "微的调整是肉眼很难分辨的。"
 
+#: src/lib/text_content.cc:248
+msgid ""
+"A subtitle or closed caption file in this project is marked with the "
+"language '%1', which DCP-o-matic does not recognise.  The file's language "
+"has been cleared."
+msgstr ""
+
 #: src/lib/ffmpeg_content.cc:635
 msgid "ARIB STD-B67 ('Hybrid log-gamma')"
 msgstr "ARIB STD-B67 (HDR-HLG)"
@@ -231,7 +238,7 @@ msgstr "ARIB STD-B67 (HDR-HLG)"
 msgid "Advertisement"
 msgstr "广告片"
 
-#: src/lib/hints.cc:146
+#: src/lib/hints.cc:143
 msgid ""
 "All of your content is in Scope (2.39:1) but your DCP's container is Flat "
 "(1.85:1).  This will letter-box your content inside a Flat (1.85:1) frame.  "
@@ -241,7 +248,7 @@ msgstr ""
 "您添加的媒体画面宽高比为2.39:1，但是DCP容器设置为1.85:1的模式。这将会使您的画"
 "面在放映时存在上下黑边。建议把DCP容器设置为2.39:1的模式。"
 
-#: src/lib/hints.cc:150
+#: src/lib/hints.cc:147
 #, fuzzy
 msgid ""
 "All of your content narrower than 1.90:1 but your DCP's container is Scope "
@@ -264,55 +271,55 @@ msgstr "分析音频中"
 msgid "Analysing subtitles"
 msgstr "定位字幕中"
 
-#: src/lib/hints.cc:368
+#: src/lib/hints.cc:365
 msgid ""
 "At least one marker comes after the end of the project and will be ignored."
 msgstr "至少有一个标记出现在项目结束后，将被忽略。"
 
-#: src/lib/hints.cc:473
+#: src/lib/hints.cc:470
 msgid "At least one of your closed caption files is larger than "
 msgstr "至少有一个隐藏字幕文件过大"
 
-#: src/lib/hints.cc:466
+#: src/lib/hints.cc:463
 msgid "At least one of your closed caption files' XML part is larger than "
 msgstr "至少有一个隐藏式字幕文件的XML部分过大"
 
-#: src/lib/hints.cc:481
+#: src/lib/hints.cc:478
 msgid "At least one of your subtitle files is larger than "
 msgstr "至少有一个字幕文件过大"
 
-#: src/lib/hints.cc:445
+#: src/lib/hints.cc:442
 msgid ""
 "At least one of your subtitle lines has more than 52 characters.  It is "
 "recommended to make each line 52 characters at most in length."
 msgstr "至少有一行字幕超过52个字符，  建议每行最多52个字符。"
 
-#: src/lib/hints.cc:447
+#: src/lib/hints.cc:444
 msgid ""
 "At least one of your subtitle lines has more than 79 characters.  You should "
 "make each line 79 characters at most in length."
 msgstr "至少有一行字幕超过79个字符，  你应该让每行最多79个字符。"
 
-#: src/lib/hints.cc:590
+#: src/lib/hints.cc:587
 msgid ""
 "At least one of your subtitles has more than 3 lines.  It is advisable to "
 "use no more than 3 lines."
 msgstr "您的字幕中至少有一个超过3行，  建议使用不超过3行。"
 
-#: src/lib/hints.cc:580
+#: src/lib/hints.cc:577
 msgid ""
 "At least one of your subtitles lasts less than 15 frames.  It is advisable "
 "to make each subtitle at least 15 frames long."
 msgstr "您的字幕中至少有一个持续时间少于15帧，  建议每个字幕至少15帧长。"
 
-#: src/lib/hints.cc:585
+#: src/lib/hints.cc:582
 msgid ""
 "At least one of your subtitles starts less than 2 frames after the previous "
 "one.  It is advisable to make the gap between subtitles at least 2 frames."
 msgstr ""
 "至少有一个字幕在前一个字幕后不到2帧开始，  建议字幕之间的间隔至少为2帧。"
 
-#: src/lib/hints.cc:633
+#: src/lib/hints.cc:630
 msgid ""
 "At least one piece of subtitle or closed caption content has no specified "
 "language.  It is advisable to set the language for each piece of subtitle or "
@@ -388,15 +395,15 @@ msgstr "像素位"
 msgid "Bob Weaver Deinterlacing Filter"
 msgstr "反隔行扫描滤镜"
 
-#: src/lib/util.cc:598
+#: src/lib/util.cc:601
 msgid "BsL"
 msgstr "左后环绕"
 
-#: src/lib/util.cc:599
+#: src/lib/util.cc:602
 msgid "BsR"
 msgstr "右后环绕"
 
-#: src/lib/util.cc:590
+#: src/lib/util.cc:593
 msgid "C"
 msgstr "中置"
 
@@ -404,7 +411,7 @@ msgstr "中置"
 msgid "Cancelled"
 msgstr "取消"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "Cannot contain slashes"
 msgstr "不能包含斜杠"
 
@@ -412,11 +419,11 @@ msgstr "不能包含斜杠"
 msgid "Cannot handle pixel format %1 during %2"
 msgstr "在 %2 不能处理图片格式 %1"
 
-#: src/lib/film.cc:1662
+#: src/lib/film.cc:1711
 msgid "Cannot make a KDM as this project is not encrypted."
 msgstr "不能生成KDM，因为项目没有被加密."
 
-#: src/lib/util.cc:559
+#: src/lib/util.cc:562
 msgid "Centre"
 msgstr "居中对齐"
 
@@ -486,7 +493,7 @@ msgstr "合并 DCPs"
 msgid "Computing digest"
 msgstr "计算Hash值中"
 
-#: src/lib/writer.cc:535
+#: src/lib/writer.cc:531
 msgid "Computing digests"
 msgstr "计算Hash值中"
 
@@ -514,22 +521,22 @@ msgstr "要加入的内容必须都有或都没有隐藏式字幕"
 msgid "Content to be joined must all have or not have video"
 msgstr "要加入的内容必须都有或都没有视频"
 
-#: src/lib/text_content.cc:305
+#: src/lib/text_content.cc:320
 #, fuzzy
 msgid ""
 "Content to be joined must both be main subtitle languages or both additional."
 msgstr "字幕行距必须相同."
 
-#: src/lib/video_content.cc:207
+#: src/lib/video_content.cc:210
 #, fuzzy
 msgid "Content to be joined must have all its video used or not used."
 msgstr "内容帧率必须相同"
 
-#: src/lib/text_content.cc:260
+#: src/lib/text_content.cc:275
 msgid "Content to be joined must have the same 'burn subtitles' setting."
 msgstr "所有要添加“刻录字幕”设置必须具有相同。"
 
-#: src/lib/text_content.cc:256
+#: src/lib/text_content.cc:271
 msgid "Content to be joined must have the same 'use subtitles' setting."
 msgstr "所有要添加“use 字幕”设置必须具有相同。"
 
@@ -541,62 +548,62 @@ msgstr "视频和音频的延迟必须相同。"
 msgid "Content to be joined must have the same audio gain."
 msgstr "视频和音频增益必须相同。"
 
-#: src/lib/video_content.cc:239
+#: src/lib/video_content.cc:242
 #, fuzzy
 msgid "Content to be joined must have the same burnt subtitle language."
 msgstr "所有要添加“刻录字幕”设置必须具有相同。"
 
-#: src/lib/video_content.cc:231
+#: src/lib/video_content.cc:234
 msgid "Content to be joined must have the same colour conversion."
 msgstr "视频颜色转换必须相同。"
 
-#: src/lib/video_content.cc:219
+#: src/lib/video_content.cc:222
 msgid "Content to be joined must have the same crop."
 msgstr "视频裁剪设置必须相同。"
 
-#: src/lib/video_content.cc:223
+#: src/lib/video_content.cc:226
 #, fuzzy
 msgid "Content to be joined must have the same custom ratio setting."
 msgstr "视频比例设置必须相同。"
 
-#: src/lib/video_content.cc:227
+#: src/lib/video_content.cc:230
 #, fuzzy
 msgid "Content to be joined must have the same custom size setting."
 msgstr "视频比例设置必须相同。"
 
-#: src/lib/video_content.cc:235
+#: src/lib/video_content.cc:238
 msgid "Content to be joined must have the same fades."
 msgstr "视频淡入淡出效果必须相同。"
 
-#: src/lib/text_content.cc:288
+#: src/lib/text_content.cc:303
 msgid "Content to be joined must have the same outline width."
 msgstr "字幕宽度尺寸必须相同。"
 
-#: src/lib/video_content.cc:211
+#: src/lib/video_content.cc:214
 msgid "Content to be joined must have the same picture size."
 msgstr "视频图像尺寸必须相同。"
 
-#: src/lib/text_content.cc:264
+#: src/lib/text_content.cc:279
 msgid "Content to be joined must have the same subtitle X offset."
 msgstr "字幕X轴偏移必须相同。"
 
-#: src/lib/text_content.cc:272
+#: src/lib/text_content.cc:287
 msgid "Content to be joined must have the same subtitle X scale."
 msgstr "字幕X轴缩放大小必须相同。"
 
-#: src/lib/text_content.cc:268
+#: src/lib/text_content.cc:283
 msgid "Content to be joined must have the same subtitle Y offset."
 msgstr "字幕Y轴偏移必须相同。"
 
-#: src/lib/text_content.cc:276
+#: src/lib/text_content.cc:291
 msgid "Content to be joined must have the same subtitle Y scale."
 msgstr "字幕Y轴缩放大小必须相同。"
 
-#: src/lib/text_content.cc:284
+#: src/lib/text_content.cc:299
 msgid "Content to be joined must have the same subtitle fades."
 msgstr "字幕淡入淡出效果必须相同。"
 
-#: src/lib/text_content.cc:280
+#: src/lib/text_content.cc:295
 msgid "Content to be joined must have the same subtitle line spacing."
 msgstr "字幕行距必须相同."
 
@@ -604,15 +611,15 @@ msgstr "字幕行距必须相同."
 msgid "Content to be joined must have the same video frame rate"
 msgstr "内容帧率必须相同"
 
-#: src/lib/video_content.cc:215
+#: src/lib/video_content.cc:218
 msgid "Content to be joined must have the same video frame type."
 msgstr "视频帧率必须相同。"
 
-#: src/lib/text_content.cc:297
+#: src/lib/text_content.cc:312
 msgid "Content to be joined must use the same DCP track."
 msgstr "DCP轨道必须相同。"
 
-#: src/lib/text_content.cc:293 src/lib/text_content.cc:313
+#: src/lib/text_content.cc:308 src/lib/text_content.cc:328
 msgid "Content to be joined must use the same fonts."
 msgstr "字幕字体必须相同。"
 
@@ -620,12 +627,12 @@ msgstr "字幕字体必须相同。"
 msgid "Content to be joined must use the same subtitle stream."
 msgstr "字幕流必须相同。"
 
-#: src/lib/text_content.cc:301
+#: src/lib/text_content.cc:316
 #, fuzzy
 msgid "Content to be joined must use the same text language."
 msgstr "字幕字体必须相同。"
 
-#: src/lib/video_content.cc:430
+#: src/lib/video_content.cc:438
 msgid "Content video is %1x%2"
 msgstr "源视频分辨率是 %1x%2"
 
@@ -650,7 +657,7 @@ msgstr "无法连接到服务器 %1 (%2)"
 msgid "Could not create remote directory %1 (%2)"
 msgstr "无法创建远程目录 %1 (%2)"
 
-#: src/lib/image_examiner.cc:65
+#: src/lib/image_examiner.cc:64
 msgid "Could not decode JPEG2000 file %1 (%2)"
 msgstr "无法解码JPEG2000文件%1 (%2)"
 
@@ -684,7 +691,7 @@ msgstr "无法打开下载的zip文件 (%1:%2: %3)"
 msgid "Could not open file for writing"
 msgstr "无法执行写入，目标文件无法打开"
 
-#: src/lib/ffmpeg_file_encoder.cc:269
+#: src/lib/ffmpeg_file_encoder.cc:265
 #, fuzzy
 msgid "Could not open output file %1 (%2)"
 msgstr "不能写入文件 %1 (%2)"
@@ -701,19 +708,19 @@ msgstr "无法开始传输"
 msgid "Could not write to remote file (%1)"
 msgstr "写入远程文件 (%1)失败！"
 
-#: src/lib/util.cc:569
+#: src/lib/util.cc:572
 msgid "D-BOX primary"
 msgstr "一级D-BOX"
 
-#: src/lib/util.cc:570
+#: src/lib/util.cc:573
 msgid "D-BOX secondary"
 msgstr "二级D-BOX"
 
-#: src/lib/util.cc:600
+#: src/lib/util.cc:603
 msgid "DBP"
 msgstr "一级D-BOX通道"
 
-#: src/lib/util.cc:601
+#: src/lib/util.cc:604
 msgid "DBS"
 msgstr "DBS"
 
@@ -725,7 +732,7 @@ msgstr "DCI Flat(遮幅/1.77/1.78/1.85)  "
 msgid "DCI Scope"
 msgstr "DCI Scope(宽银幕/2.35/2.39)  "
 
-#: src/lib/dcp_subtitle_content.cc:103
+#: src/lib/dcp_subtitle_content.cc:104
 msgid "DCP XML subtitles"
 msgstr "DCP XML字幕"
 
@@ -748,7 +755,7 @@ msgid ""
 "is in an unexpected format."
 msgstr "无法打开文件%1 (%2)。文件不存在或格式无法识别。"
 
-#: src/lib/film.cc:1565
+#: src/lib/film.cc:1614
 msgid ""
 "DCP-o-matic had to change your settings for referring to DCPs as OV.  Please "
 "review those settings to make sure they are what you want."
@@ -756,7 +763,7 @@ msgstr ""
 "DCP-o-matic必须把您DCP的设置更改为OV（原创）。请重新检查设置确认设置内容是否"
 "为您的期望值。"
 
-#: src/lib/film.cc:1533
+#: src/lib/film.cc:1582
 #, fuzzy
 msgid ""
 "DCP-o-matic had to change your settings so that the film's frame rate is the "
@@ -770,7 +777,7 @@ msgid ""
 "DCP-o-matic no longer supports the `%1' filter, so it has been turned off."
 msgstr "不支持的格式`%1'。"
 
-#: src/lib/config.cc:359 src/lib/config.cc:1114
+#: src/lib/config.cc:357 src/lib/config.cc:1114
 msgid "DCP-o-matic notification"
 msgstr "DCP-o-matic提醒"
 
@@ -862,7 +869,7 @@ msgstr "字幕文件错误: 执行为 %1 实际要求为%2"
 msgid "Error: %1"
 msgstr "错误: (%1)"
 
-#: src/lib/hints.cc:408
+#: src/lib/hints.cc:405
 #, fuzzy
 msgid "Examining audio, subtitles and closed captions"
 msgstr "检查隐藏式字幕中"
@@ -875,7 +882,7 @@ msgstr "检查媒体内容中"
 msgid "Examining subtitles"
 msgstr "定位字幕中"
 
-#: src/lib/hints.cc:406
+#: src/lib/hints.cc:403
 #, fuzzy
 msgid "Examining subtitles and closed captions"
 msgstr "检查隐藏式字幕中"
@@ -906,7 +913,7 @@ msgstr "电子邮件发送失败"
 msgid "Feature"
 msgstr "正片"
 
-#: src/lib/content.cc:464
+#: src/lib/content.cc:468
 msgid "Filename"
 msgstr "文件名"
 
@@ -918,11 +925,11 @@ msgstr "电影"
 msgid "Finding length"
 msgstr "定位长度"
 
-#: src/lib/content.cc:471
+#: src/lib/content.cc:475
 msgid "Frame rate"
 msgstr "帧率"
 
-#: src/lib/util.cc:943
+#: src/lib/util.cc:946
 msgid "Friday"
 msgstr "星期五"
 
@@ -966,11 +973,11 @@ msgstr "伽玛 2.8 (BT470BG)"
 msgid "Gradient debander"
 msgstr "梯度"
 
-#: src/lib/util.cc:594
+#: src/lib/util.cc:597
 msgid "HI"
 msgstr "听力障碍"
 
-#: src/lib/util.cc:563
+#: src/lib/util.cc:566
 msgid "Hearing impaired"
 msgstr "听力障碍"
 
@@ -994,11 +1001,11 @@ msgstr "IEC61966-2-1 (sRGB或sYCC)"
 msgid "IEC61966-2-4"
 msgstr "IEC61966-2-4"
 
-#: src/lib/hints.cc:188
+#: src/lib/hints.cc:185
 msgid "If you do use 25fps you should change your DCP standard to SMPTE."
 msgstr "如果您选择使用25fps，那就必须把DCP标准选线设置为SMPTE"
 
-#: src/lib/hints.cc:251
+#: src/lib/hints.cc:248
 msgid ""
 "In general it is now advisable to make SMPTE DCPs unless you have a "
 "particular reason to use Interop.  You are advised to set your DCP to use "
@@ -1007,7 +1014,7 @@ msgstr ""
 "一般建议您使用SMPTE DCPS，除非您有特殊原因使用Interop。建议您在“DCP”选项卡中"
 "将DCP设置为使用SMPTE标准。"
 
-#: src/lib/hints.cc:573
+#: src/lib/hints.cc:570
 msgid ""
 "It is advisable to put your first subtitle at least 4 seconds after the "
 "start of the DCP to make sure it is seen."
@@ -1021,7 +1028,7 @@ msgstr "未知错误."
 msgid "JEDEC P22"
 msgstr "JEDEC P22"
 
-#: src/lib/config.cc:349 src/lib/config.cc:1099
+#: src/lib/config.cc:347 src/lib/config.cc:1099
 msgid "KDM delivery: $CPL_NAME"
 msgstr "发行KDM: $CPL_NAME"
 
@@ -1029,39 +1036,39 @@ msgstr "发行KDM: $CPL_NAME"
 msgid "Kernel deinterlacer"
 msgstr "隔行扫描"
 
-#: src/lib/ffmpeg_encoder.cc:251 src/lib/util.cc:588
+#: src/lib/ffmpeg_encoder.cc:253 src/lib/util.cc:591
 msgid "L"
 msgstr "左声道"
 
-#: src/lib/util.cc:596
+#: src/lib/util.cc:599
 msgid "Lc"
 msgstr "左中"
 
-#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:557
+#: src/lib/mid_side_decoder.cc:107 src/lib/util.cc:560
 msgid "Left"
 msgstr "左声道"
 
-#: src/lib/util.cc:565
+#: src/lib/util.cc:568
 msgid "Left centre"
 msgstr "左中"
 
-#: src/lib/util.cc:567
+#: src/lib/util.cc:570
 msgid "Left rear surround"
 msgstr "左后环绕"
 
-#: src/lib/util.cc:561
+#: src/lib/util.cc:564
 msgid "Left surround"
 msgstr "左环绕"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "Length"
 msgstr "长度"
 
-#: src/lib/util.cc:591
+#: src/lib/util.cc:594
 msgid "Lfe"
 msgstr "次低"
 
-#: src/lib/util.cc:560
+#: src/lib/util.cc:563
 msgid "Lfe (sub)"
 msgstr "次低（重低音）"
 
@@ -1085,11 +1092,11 @@ msgstr "对数 (范围 100:1)"
 msgid "Logarithmic (316:1 range)"
 msgstr "对数 (范围 316:1)"
 
-#: src/lib/exceptions.cc:145
+#: src/lib/exceptions.cc:152
 msgid "Lost communication between main and writer processes"
 msgstr "主进程和写入进程之间的通信丢失"
 
-#: src/lib/util.cc:592
+#: src/lib/util.cc:595
 msgid "Ls"
 msgstr "左环绕"
 
@@ -1101,19 +1108,19 @@ msgstr "中置解码"
 msgid "Misc"
 msgstr "其他"
 
-#: src/lib/dcp_examiner.cc:164
+#: src/lib/dcp_examiner.cc:175
 msgid "Mismatched audio channel counts in DCP"
 msgstr "DCP中的音频通道数不匹配"
 
-#: src/lib/dcp_examiner.cc:170
+#: src/lib/dcp_examiner.cc:181
 msgid "Mismatched audio sample rates in DCP"
 msgstr "DCP中的音频采样率不符合"
 
-#: src/lib/dcp_examiner.cc:137
+#: src/lib/dcp_examiner.cc:145
 msgid "Mismatched frame rates in DCP"
 msgstr "DCP中的帧率不匹配"
 
-#: src/lib/dcp_examiner.cc:145
+#: src/lib/dcp_examiner.cc:153
 msgid "Mismatched video sizes in DCP"
 msgstr "DCP中的视频分辨率不匹配"
 
@@ -1121,11 +1128,11 @@ msgstr "DCP中的视频分辨率不匹配"
 msgid "Missing required setting %1"
 msgstr "缺少必需的设置 %1"
 
-#: src/lib/util.cc:935
+#: src/lib/util.cc:938
 msgid "Monday"
 msgstr "星期一"
 
-#: src/lib/writer.cc:763
+#: src/lib/writer.cc:759
 msgid "Mono"
 msgstr "单声道"
 
@@ -1149,7 +1156,7 @@ msgstr "未发现有效的图片序列文件。"
 msgid "Noise reduction"
 msgstr "降噪"
 
-#: src/lib/writer.cc:731 src/lib/writer.cc:738 src/lib/writer.cc:761
+#: src/lib/writer.cc:727 src/lib/writer.cc:734 src/lib/writer.cc:757
 msgid "None"
 msgstr "无"
 
@@ -1186,7 +1193,7 @@ msgstr "小波降噪"
 msgid "P3"
 msgstr "P3"
 
-#: src/lib/util.h:59
+#: src/lib/util.h:64
 msgid ""
 "Please report this problem by using Help -> Report a problem or via email to "
 "carl@dcpomatic.com"
@@ -1197,7 +1204,7 @@ msgstr ""
 msgid "Policy"
 msgstr "政策相关"
 
-#: src/lib/content.cc:480
+#: src/lib/content.cc:484
 msgid "Prepared for video frame rate"
 msgstr "准备视频帧率"
 
@@ -1213,7 +1220,7 @@ msgstr "宣传片"
 msgid "Public Service Announcement"
 msgstr "公共服务或公告"
 
-#: src/lib/ffmpeg_encoder.cc:256 src/lib/util.cc:589
+#: src/lib/ffmpeg_encoder.cc:258 src/lib/util.cc:592
 msgid "R"
 msgstr "右声道"
 
@@ -1225,7 +1232,7 @@ msgstr "颜色模式 RGB / sRGB (IEC61966-2-1)"
 msgid "Rating"
 msgstr "分级"
 
-#: src/lib/util.cc:597
+#: src/lib/util.cc:600
 msgid "Rc"
 msgstr "右中"
 
@@ -1245,19 +1252,19 @@ msgstr "Rec. 601"
 msgid "Rec. 709"
 msgstr "Rec. 709"
 
-#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:558
+#: src/lib/mid_side_decoder.cc:108 src/lib/util.cc:561
 msgid "Right"
 msgstr "右声道"
 
-#: src/lib/util.cc:566
+#: src/lib/util.cc:569
 msgid "Right centre"
 msgstr "右中"
 
-#: src/lib/util.cc:568
+#: src/lib/util.cc:571
 msgid "Right rear surround"
 msgstr "右后环绕"
 
-#: src/lib/util.cc:562
+#: src/lib/util.cc:565
 msgid "Right surround"
 msgstr "右环绕"
 
@@ -1269,7 +1276,7 @@ msgstr "逆时针旋转90°"
 msgid "Rotate 90 degrees clockwise"
 msgstr "顺时针旋转90°"
 
-#: src/lib/util.cc:593
+#: src/lib/util.cc:596
 msgid "Rs"
 msgstr "右环绕"
 
@@ -1294,7 +1301,7 @@ msgstr "SMPTE 2085, Y'D'zD'x"
 msgid "SMPTE 240M"
 msgstr "SMPTE 240M"
 
-#: src/lib/hints.cc:615
+#: src/lib/hints.cc:612
 msgid ""
 "SMPTE DCPs with the type FTR (feature) should have markers for the first "
 "frame of end credits (FFEC) and the first frame of moving credits (FFMC).  "
@@ -1334,7 +1341,7 @@ msgstr "SSH错误 (%1)"
 msgid "SSH error [%1] (%2)"
 msgstr "SSH错误 (%1)"
 
-#: src/lib/util.cc:945
+#: src/lib/util.cc:948
 msgid "Saturday"
 msgstr "星期六"
 
@@ -1350,11 +1357,11 @@ msgstr "发送电子邮件"
 msgid "Short"
 msgstr "短片"
 
-#: src/lib/util.cc:602
+#: src/lib/util.cc:605
 msgid "Sign"
 msgstr "签名"
 
-#: src/lib/video_content.cc:500
+#: src/lib/video_content.cc:510
 msgid "Size"
 msgstr "大小"
 
@@ -1380,13 +1387,13 @@ msgstr ""
 "一些文件在添加到项目后被修改。在DCP-o-matic中打开项目，检查设置，然后保存后重"
 "试"
 
-#: src/lib/hints.cc:554
+#: src/lib/hints.cc:551
 msgid ""
 "Some of your closed captions span more than %1 lines, so they will be "
 "truncated."
 msgstr "您的某些隐藏字幕跨度超过%1行，因此它将被截断，可能显示不完整"
 
-#: src/lib/hints.cc:653
+#: src/lib/hints.cc:650
 msgid ""
 "Some of your content has audio but you have not set the audio language.  It "
 "is advisable to set the audio language in the \"DCP\" tab unless your audio "
@@ -1395,15 +1402,15 @@ msgstr ""
 "您的某些内容有音频，但您尚未设置音频语言。建议在“DCP”选项卡设置音频语言，除非"
 "您的音频没有说话部分。"
 
-#: src/lib/film.cc:406
+#: src/lib/film.cc:417
 msgid "Some of your content needs a KDM"
 msgstr "一些内容需要KDM密匙"
 
-#: src/lib/film.cc:409
+#: src/lib/film.cc:420
 msgid "Some of your content needs an OV"
 msgstr "一些内容需要OV（声明原创）"
 
-#: src/lib/writer.cc:765
+#: src/lib/writer.cc:761
 msgid "Stereo"
 msgstr "双声道"
 
@@ -1415,7 +1422,7 @@ msgstr "立体声到5.1，混音器A"
 msgid "Stereo to 5.1 up-mixer B"
 msgstr "立体声到5.1，混音器B"
 
-#: src/lib/util.cc:933
+#: src/lib/util.cc:936
 msgid "Sunday"
 msgstr "星期日/天"
 
@@ -1435,7 +1442,7 @@ msgstr "测试片"
 msgid "Text subtitles"
 msgstr "文本字幕"
 
-#: src/lib/film.cc:389
+#: src/lib/film.cc:400
 msgid "The DCP is empty, perhaps because all the content has zero length."
 msgstr "DCP为空，可能是因为所有内容的长度都为零"
 
@@ -1447,7 +1454,7 @@ msgstr "证书签名无效"
 msgid "The certificate chain for signing is invalid (%1)"
 msgstr "证书签名无效(%1)"
 
-#: src/lib/video_decoder.cc:86
+#: src/lib/video_decoder.cc:81
 msgid ""
 "The content file %1 is set as 3D but does not appear to contain 3D images.  "
 "Please set it to 2D.  You can still make a 3D DCP from this content by "
@@ -1478,7 +1485,7 @@ msgstr "文件 %1 被缩短了 %2 毫秒."
 msgid "The file %1 has been trimmed by %2 milliseconds more."
 msgstr "文件 %1 被延长了 %2 毫秒."
 
-#: src/lib/hints.cc:241
+#: src/lib/hints.cc:238
 msgid ""
 "There is a large difference between the frame rate of your DCP and that of "
 "some of your content.  This will cause your audio to play back at a much "
@@ -1489,7 +1496,7 @@ msgstr ""
 "您的DCP和某些内容的帧速率不符。可能导致声画不同步。如果您的放映服务器支持当前"
 "速率，建议您将DCP帧速率设置为更接近当前原视频的速率"
 
-#: src/lib/dcp_content.cc:657
+#: src/lib/dcp_content.cc:659
 msgid "There is no video in this DCP"
 msgstr "DCP中不包含画面"
 
@@ -1500,12 +1507,12 @@ msgid ""
 "tab of Preferences."
 msgstr "内存不足，如您是32位系统，请重新设置运行线程数量来达到稳定运行。"
 
-#: src/lib/util.cc:1146
+#: src/lib/util.cc:1150
 #, fuzzy
 msgid "This KDM was made for DCP-o-matic but not for its leaf certificate."
 msgstr "KDM是为DCP-o-matic生成，但是与上级证书不匹配。"
 
-#: src/lib/util.cc:1144
+#: src/lib/util.cc:1148
 #, fuzzy
 msgid "This KDM was not made for DCP-o-matic's decryption certificate."
 msgstr "KDM不是为DCP-o-matic解密证书而生成"
@@ -1537,20 +1544,20 @@ msgstr ""
 "这是一个KDM密匙文件。KDM密匙文件可以通过在你的DCP包上右键，点击添加KDM文件添"
 "加到DCP中。"
 
-#: src/lib/film.cc:581
+#: src/lib/film.cc:595
 msgid ""
 "This film was created with a newer version of DCP-o-matic, and it cannot be "
 "loaded into this version.  Sorry!"
 msgstr "不支持新版本创建的工程文件!"
 
-#: src/lib/film.cc:566
+#: src/lib/film.cc:580
 msgid ""
 "This film was created with an older version of DCP-o-matic, and "
 "unfortunately it cannot be loaded into this version.  You will need to "
 "create a new Film, re-add your content and set it up again.  Sorry!"
 msgstr "不支持老版本创建的工程文件!"
 
-#: src/lib/util.cc:941
+#: src/lib/util.cc:944
 msgid "Thursday"
 msgstr "星期四"
 
@@ -1570,7 +1577,7 @@ msgstr "转码中 %1"
 msgid "Transitional"
 msgstr "过渡片"
 
-#: src/lib/util.cc:937
+#: src/lib/util.cc:940
 msgid "Tuesday"
 msgstr "星期二"
 
@@ -1595,7 +1602,7 @@ msgstr "未知"
 msgid "Unknown error"
 msgstr "未知错误"
 
-#: src/lib/ffmpeg_decoder.cc:343
+#: src/lib/ffmpeg_decoder.cc:339
 msgid "Unrecognised audio sample format (%1)"
 msgstr "无法识别的音频采样格式 (%1)"
 
@@ -1615,7 +1622,7 @@ msgstr "未指定"
 msgid "Untitled"
 msgstr "无标题"
 
-#: src/lib/util.cc:571 src/lib/util.cc:572
+#: src/lib/util.cc:574 src/lib/util.cc:575
 msgid "Unused"
 msgstr "未使用"
 
@@ -1627,7 +1634,7 @@ msgstr "左混"
 msgid "Upmix R"
 msgstr "右混"
 
-#: src/lib/util.cc:595
+#: src/lib/util.cc:598
 msgid "VI"
 msgstr "视力障碍"
 
@@ -1639,7 +1646,7 @@ msgstr "验证DCP中"
 msgid "Vertical flip"
 msgstr "垂直翻转"
 
-#: src/lib/util.cc:564
+#: src/lib/util.cc:567
 msgid "Visually impaired"
 msgstr "视力障碍"
 
@@ -1652,7 +1659,7 @@ msgstr "请稍候"
 msgid "Weave filter"
 msgstr "胶转磁滤镜"
 
-#: src/lib/util.cc:939
+#: src/lib/util.cc:942
 msgid "Wednesday"
 msgstr "星期三"
 
@@ -1664,7 +1671,7 @@ msgstr "YCOCG"
 msgid "Yet Another Deinterlacing Filter"
 msgstr "反隔行扫描滤镜"
 
-#: src/lib/hints.cc:201
+#: src/lib/hints.cc:198
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You are advised to change the DCP frame rate "
@@ -1673,7 +1680,7 @@ msgstr ""
 "您设置的帧率为%1 fps的DCP。并非所有放映设备都支持此帧率。建议您将DCP帧率更改"
 "为%2 fps。"
 
-#: src/lib/hints.cc:185
+#: src/lib/hints.cc:182
 msgid ""
 "You are set up for a DCP at a frame rate of %1 fps.  This frame rate is not "
 "supported by all projectors.  You may want to consider changing your frame "
@@ -1682,19 +1689,19 @@ msgstr ""
 "您设置的帧率为%1 fps的DCP。并非所有放映设备都支持此帧率。建议您将帧率更改"
 "为%2 fps。"
 
-#: src/lib/hints.cc:195
+#: src/lib/hints.cc:192
 msgid ""
 "You are set up for a DCP frame rate of 30fps, which is not supported by all "
 "projectors.  Be aware that you may have compatibility problems."
 msgstr "您设置的DCP帧速率为30fps，这不是所有放映设备都支持 ，请注意兼容问题。"
 
-#: src/lib/hints.cc:306
+#: src/lib/hints.cc:303
 msgid ""
 "You are using 3D content but your DCP is set to 2D.  Set the DCP to 3D if "
 "you want to play it back on a 3D system (e.g. Real-D, MasterImage etc.)"
 msgstr "您添加的内容是3D内容，但您的DCP包设置为2D模式，请设置到3D模式。"
 
-#: src/lib/hints.cc:122
+#: src/lib/hints.cc:119
 msgid ""
 "You are using DCP-o-matic's stereo-to-5.1 upmixer.  This is experimental and "
 "may result in poor-quality audio.  If you continue, you should listen to the "
@@ -1703,7 +1710,7 @@ msgstr ""
 "你用的是dcp-o-matic双声道转5.1立体声的混频器。这是实验性的功能，可能导致音频"
 "质量差。如果你继续，你应该检查完成的DCP声音."
 
-#: src/lib/hints.cc:290
+#: src/lib/hints.cc:287
 msgid ""
 "You have %1 files that look like they are VOB files from DVD. You should "
 "join them to ensure smooth joins between the files."
@@ -1711,13 +1718,13 @@ msgstr ""
 "您已经添加了 %1 个VOB文件，如果他们来自一张DVD，请确保您已经导入了所有文件，"
 "否则可能无法正常播放。"
 
-#: src/lib/film.cc:1529
+#: src/lib/film.cc:1578
 msgid ""
 "You have more than one piece of Atmos content, and they do not have the same "
 "frame rate.  You must remove some Atmos content."
 msgstr "您有多个全景声，它们的帧率不同。您必须删除一些全景声。"
 
-#: src/lib/hints.cc:561
+#: src/lib/hints.cc:558
 msgid ""
 "You have overlapping closed captions, which are not allowed in Interop "
 "DCPs.  Change your DCP standard to SMPTE."
@@ -1725,17 +1732,17 @@ msgstr ""
 "您有重叠的隐藏式字幕，这在 Interop DCP中是不允许的。请您的DCP标准更改为"
 "SMPTE。"
 
-#: src/lib/hints.cc:274
+#: src/lib/hints.cc:271
 msgid ""
 "You have specified a font file which is larger than 640kB.  This is very "
 "likely to cause problems on playback."
 msgstr "您添加的字体文件超过了640KB，部分服务器不支持超过640KB大小的字体。"
 
-#: src/lib/film.cc:385
+#: src/lib/film.cc:396
 msgid "You must add some content to the DCP before creating it"
 msgstr "在创建 DCP 之前，必须向添加一些内容"
 
-#: src/lib/hints.cc:112
+#: src/lib/hints.cc:109
 msgid ""
 "Your DCP has fewer than 6 audio channels.  This may cause problems on some "
 "projectors.  You may want to set the DCP to have 6 channels.  It does not "
@@ -1745,7 +1752,7 @@ msgstr ""
 "您的DCP的音轨少于6个，可能会在某些放映设备不支持。但是您任然可以设置成6个声"
 "轨，因为DCP-o-matic将用空白音轨补齐。"
 
-#: src/lib/hints.cc:160
+#: src/lib/hints.cc:157
 msgid ""
 "Your DCP uses an unusual container ratio.  This may cause problems on some "
 "projectors.  If possible, use Flat or Scope for the DCP container ratio."
@@ -1753,13 +1760,13 @@ msgstr ""
 "DCP使用了不常见的画幅比例，可能导致部分电影放映机无法正常播放，建议改成Flat "
 "(1.77/1.78/1.85) 或者Scope (2.35/2.39) 比例。"
 
-#: src/lib/hints.cc:340
+#: src/lib/hints.cc:337
 msgid ""
 "Your audio level is very high (on %1).  You should reduce the gain of your "
 "audio content."
 msgstr "您的音频增益过大 (在%1)，请降低音频增益。"
 
-#: src/lib/config.cc:289
+#: src/lib/config.cc:287
 msgid ""
 "Your default container is not valid and has been changed to Flat (1.85:1)"
 msgstr "默认设置的容器不可用，已被替换为Flat (1.85:1)"
@@ -1783,7 +1790,7 @@ msgstr "[动态图像]"
 msgid "[still]"
 msgstr "[静态图像]"
 
-#: src/lib/dcp_subtitle_content.cc:97 src/lib/string_text_file_content.cc:78
+#: src/lib/dcp_subtitle_content.cc:98 src/lib/string_text_file_content.cc:78
 msgid "[subtitles]"
 msgstr "[字幕]"
 
@@ -1801,11 +1808,11 @@ msgstr "连接超时"
 msgid "connecting"
 msgstr "连接"
 
-#: src/lib/film.cc:381
+#: src/lib/film.cc:392
 msgid "container"
 msgstr "打包类型"
 
-#: src/lib/film.cc:393
+#: src/lib/film.cc:404
 msgid "content type"
 msgstr "打包类型"
 
@@ -1861,89 +1868,89 @@ msgstr "异步读取错误 (%1)"
 msgid "error during async_write (%1)"
 msgstr "异步写入错误 (%1)"
 
-#: src/lib/content.cc:473 src/lib/content.cc:482
+#: src/lib/content.cc:477 src/lib/content.cc:486
 msgid "frames per second"
 msgstr "每秒帧数"
 
 #. / TRANSLATORS: h here is an abbreviation for hours
-#: src/lib/util.cc:200
+#: src/lib/util.cc:203
 msgid "h"
 msgstr "小时"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:750
+#: src/lib/dcp_content.cc:752
 #, fuzzy
 msgid "it does not have closed captions in all its reels."
 msgstr "该DCP的所有分卷无声音。"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:739
+#: src/lib/dcp_content.cc:741
 #, fuzzy
 msgid "it does not have open subtitles in all its reels."
 msgstr "该DCP的所有分卷无字幕。"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:706
+#: src/lib/dcp_content.cc:708
 #, fuzzy
 msgid "it does not have sound in all its reels."
 msgstr "该DCP的所有分卷无声音。"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:610
+#: src/lib/dcp_content.cc:612
 #, fuzzy
 msgid "it has a different frame rate to the film."
 msgstr "影片与DCP的帧速率不一致."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:765
+#: src/lib/dcp_content.cc:767
 msgid ""
 "it has a start trim so its subtitles or closed captions must be re-written."
 msgstr "当前内容有修剪，所以字幕或隐藏字幕必须重写。"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:667
+#: src/lib/dcp_content.cc:669
 #, fuzzy
 msgid "it is 2K and the film is 4K."
 msgstr "打包内容被设置为Interop类型，而实际打包类型是 SMPTE。"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:664
+#: src/lib/dcp_content.cc:666
 #, fuzzy
 msgid "it is 4K and the film is 2K."
 msgstr "打包内容被设置为Interop类型，而实际打包类型是 SMPTE。"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:598
+#: src/lib/dcp_content.cc:600
 #, fuzzy
 msgid "it is Interop and the film is set to SMPTE."
 msgstr "打包内容被设置为Interop类型，而实际打包类型是 SMPTE。"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:602
+#: src/lib/dcp_content.cc:604
 #, fuzzy
 msgid "it is SMPTE and the film is set to Interop."
 msgstr "打包内容被设置为SMPTE类型，而实际打包类型是 Interop。"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:712
+#: src/lib/dcp_content.cc:714
 #, fuzzy
 msgid "it overlaps other audio content; remove the other content."
 msgstr "音频文件重复，请删除重复项."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:770
+#: src/lib/dcp_content.cc:772
 #, fuzzy
 msgid "it overlaps other text content; remove the other content."
 msgstr "视频文件重复，请删除重复项."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:677
+#: src/lib/dcp_content.cc:679
 #, fuzzy
 msgid "it overlaps other video content; remove the other content."
 msgstr "视频文件重复，请删除重复项."
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:633
+#: src/lib/dcp_content.cc:635
 #, fuzzy
 msgid ""
 "its reel lengths differ from those in the film; set the reel mode to 'split "
@@ -1951,13 +1958,13 @@ msgid ""
 msgstr "影片时长与DCP中的分卷时长不一致，请设置 【 分卷模式 】 来分割该内容。"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:672
+#: src/lib/dcp_content.cc:674
 #, fuzzy
 msgid "its video frame size differs from the film's."
 msgstr "视频帧大小与DCP不一致。"
 
 #. / TRANSLATORS: m here is an abbreviation for minutes
-#: src/lib/util.cc:209
+#: src/lib/util.cc:212
 msgid "m"
 msgstr "分"
 
@@ -1965,26 +1972,26 @@ msgstr "分"
 msgid "moving"
 msgstr "移动"
 
-#: src/lib/film.cc:377
+#: src/lib/film.cc:388
 msgid "name"
 msgstr "名字"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:756
+#: src/lib/dcp_content.cc:758
 msgid ""
 "one of its closed caption has a non-zero entry point so it must be re-"
 "written."
 msgstr "它的一个隐藏字幕有一个非零的时间点，因此必须重写。"
 
 #. / TRANSLATORS: this string will follow "Cannot reference this DCP: "
-#: src/lib/dcp_content.cc:743
+#: src/lib/dcp_content.cc:745
 msgid ""
 "one of its subtitle reels has a non-zero entry point so it must be re-"
 "written."
 msgstr "它的一个字幕卷轴有一个非零的时间点，因此必须重写。"
 
 #. / TRANSLATORS: s here is an abbreviation for seconds
-#: src/lib/util.cc:219
+#: src/lib/util.cc:222
 msgid "s"
 msgstr "秒"
 
@@ -1992,7 +1999,7 @@ msgstr "秒"
 msgid "sRGB"
 msgstr "sRGB"
 
-#: src/lib/film.cc:402
+#: src/lib/film.cc:413
 msgid "some of your content is missing"
 msgstr "内容不完整"
 
@@ -2004,7 +2011,7 @@ msgstr "静止图像"
 msgid "unknown"
 msgstr "未知"
 
-#: src/lib/video_content.cc:499
+#: src/lib/video_content.cc:509
 msgid "video frames"
 msgstr "视频帧"