]>
<book xmlns="http://docbook.org/ns/docbook" xmlns:mml="http://www.w3.org/1998/Math/MathML" version="5.0" xml:lang="en">
-<!-- By good luck or good management, the scale parameter to imagedata
- appears only to affect PDF output. HTML scaling is done in the
- Makefile.
--->
-
<bookinfo>
<title>DCP-o-matic users' manual</title>
<author><firstname>Carl</firstname><surname>Hetherington</surname></author>
<para>
DCP-o-matic is a program to generate <ulink
url="http://en.wikipedia.org/wiki/Digital_Cinema_Package">Digital
-Cinema Packages</ulink> (DCPs) from DVDs, Blu-Rays, video files such as MP4
-and AVI, or still images. The resulting DCPs will play on modern digital
+Cinema Packages</ulink> (DCPs) from almost any video, audio and/or
+subtitle source files. The resulting DCPs will play on modern digital
cinema projectors.
</para>
This manual uses icons from the <ulink url="http://tango.freedesktop.org/">Tango Desktop Project</ulink>, with thanks.
</para>
+</section>
+
+<!-- ============================================================== -->
+<section>
+<title>This manual</title>
+
+<para>
+This manual presents bits of DCP-o-matic's user interface (such as menu items or buttons) <guilabel>like this</guilabel>.
+</para>
+
+<note>
+Notes of an advanced nature are presented like this. Ignore them unless you want to know the gory details.
+</note>
+
</section>
</chapter>
DCP-o-matic will run on Mac OS X version 10.6 (Snow Leopard) and
higher. To install it, download the <code>.dmg</code> from <ulink
url="http://dcpomatic.com/">http://dcpomatic.com/</ulink> and double
-click to open it. Then drag the DCP-o-matic icon to your
+click to open it. Then drag the DCP-o-matics icon to your
<guilabel>Applications</guilabel> folder or wherever else you would
like to install it.
</para>
+<para>
+You do not have to install all the applications, but you must always
+install <code>DCP-o-matic 2.app</code> as the other applications
+depend on it.
+</para>
+
</section>
+<!-- ============================================================== -->
<section>
-<title>Ubuntu Linux</title>
+<title>Debian or Ubuntu Linux</title>
<para>
-You can install DCP-o-matic on Ubuntu 12.04 (‘Precise
-Pangolin’), 14.04 (‘Trusty Tahr’) or 15.04
-(‘Vivid Vervet’) using <code>.deb</code> packages:
-download the appropriate package from <ulink
-url="http://dcpomatic.com/">http://dcpomatic.com/</ulink> and
-double-click it. Ubuntu will install the necessary bits and pieces
-and set DCP-o-matic up for you.
+ You can install DCP-o-matic on:
</para>
+<itemizedlist>
+ <listitem>Debian 7 (‘wheezy’)</listitem>
+ <listitem>Debian 8 (‘jessie’)</listitem>
+ <listitem>Debian unstable (‘sid’)</listitem>
+ <listitem>Ubuntu 12.04 (‘Precise Pangolin’)</listitem>
+ <listitem>Ubuntu 14.04 (‘Trusty Tahr’)</listitem>
+ <listitem>Ubuntu 15.10 (‘Wily Werewolf’)</listitem>
+ <listitem>Ubuntu 16.04 (‘Xenial Xerus’)</listitem>
+</itemizedlist>
+
+<para>
+using <code>.deb</code> packages: download the appropriate package
+from <ulink url="http://dcpomatic.com/">http://dcpomatic.com/</ulink>
+and double-click it. Debian or Ubuntu will install the necessary bits and
+pieces and set DCP-o-matic up for you.
+</para>
</section>
+<!-- ============================================================== -->
<!-- ============================================================== -->
<section>
-<title>Debian Linux</title>
-<para>
-Packages are available for Debian 7 (squeeze), 8 (jessie) and unstable (sid) from <ulink
-url="http://dcpomatic.com/">http://dcpomatic.com/</ulink>.
-</para>
+ <title>Fedora Linux</title>
+
+ <para>There are <code>.rpm</code> packages for Fedora 22 and 23 on
+ <ulink url="http://dcpomatic.com/">http://dcpomatic.com/</ulink>
+ </para>
</section>
+<!-- ============================================================== -->
<!-- ============================================================== -->
<section>
-<title>Centos Linux</title>
-<para>
-Packages are available for Centos 6.5 and 7 from <ulink
-url="http://dcpomatic.com/">http://dcpomatic.com/</ulink>.
-</para>
+ <title>Centos Linux</title>
+ <para>There are <code>.rpm</code> packages for Centos 5, 6.5 and 7 on
+ <ulink url="http://dcpomatic.com/">http://dcpomatic.com/</ulink>
+ </para>
</section>
+<!-- ============================================================== -->
<!-- ============================================================== -->
<para>
Installation on other Linux systems (for which no packages are
-available) is quite hard; you will have to compile it from source. If
-you are using distribution for which no packages are available, do let
-me know by <ulink url="mailto:carl@dcpomatic.com">email</ulink> and I
-will look into providing packages on the website.
+available) is quite hard as it must be compiled from source. If you
+can't download packages for your distribution, do let me know by
+<ulink url="mailto:carl@dcpomatic.com">email</ulink> and I will look
+into providing packages on the website.
</para>
<para>
<itemizedlist>
<listitem><ulink url="http://ffmpeg.org/">FFmpeg</ulink></listitem>
<listitem><ulink url="http://www.mega-nerd.com/libsndfile/">libsndfile</ulink></listitem>
+<listitem><ulink url="http://www.mega-nerd.com/SRC/">libsamplerate</ulink></listitem>
<listitem><ulink url="http://www.openssl.org/">OpenSSL</ulink></listitem>
<listitem><ulink url="http://www.openjpeg.org/">libopenjpeg</ulink></listitem>
<listitem><ulink url="http://www.imagemagick.org/script/index.php">ImageMagick</ulink></listitem>
<listitem><ulink url="http://www.aleksey.com/xmlsec/">xmlsec</ulink></listitem>
<listitem><ulink url="http://curl.haxx.se/">curl</ulink></listitem>
<listitem><ulink url="http://www.nih.at/libzip/">libzip</ulink></listitem>
-<listitem><ulink url="http://carlh.net/software/libdcp/">libdcp</ulink></listitem>
-<listitem><ulink url="http://carlh.net/software/libcxml/">libcxml</ulink></listitem>
+<listitem><ulink url="http://carlh.net/libdcp/">libdcp</ulink></listitem>
+<listitem><ulink url="http://carlh.net/libsub/">libsub</ulink></listitem>
+<listitem><ulink url="http://carlh.net/libcxml/">libcxml</ulink></listitem>
+<listitem><ulink url="http://site.icu-project.org">libicu</ulink></listitem>
</itemizedlist>
</para>
<!-- ============================================================== -->
<chapter xmlns="http://docbook.org/ns/docbook" version="5.0" xml:lang="en">
-<title>Creating a video DCP</title>
+<title>Creating a DCP from a video</title>
<para>
-In this chapter we will see how to create a video DCP using
+In this chapter we will see how to create a DCP from a video file using
DCP-o-matic. We will gloss over the details and look at the basics.
</para>
need some content. Download the low-resolution trailer for the open
movie <ulink url="http://sintel.org/">Sintel</ulink> from <ulink
url="http://ftp.nluug.nl/ftp/graphics/blender/apricot/trailer/Sintel_Trailer1.480p.DivX_Plus_HD.mkv">their
-website</ulink>. Generally, of course, one would want to use the
+website</ulink>. Generally one would want to use the
highest-resolution material available, but for this test we will use
the low-resolution version to save everyone's bandwidth bills.
</para>
</para>
<para>
-Alternatively, if you have a projector or Theatre Management System
-(TMS) that is accessible via SCP across your network, you can upload
+Alternatively, if you have a projector or Theatre Management System
+(TMS) that is accessible via SCP or FTP across your network, you can upload
the content directly from DCP-o-matic. See the <xref
linkend="sec-prefs-tms" endterm="sec-prefs-tms-short"/> in <xref linkend="sec-prefs-tms"/>.
</para>
<!-- ============================================================== -->
<chapter xmlns="http://docbook.org/ns/docbook" version="5.0" xml:lang="en">
-<title>Creating a still-image DCP</title>
+<title>Creating a DCP from a still image</title>
<para>
DCP-o-matic can also be used to create DCPs of one or more still images, perhaps
</para>
<para>
-As with video DCPs, the first step is to create a new
+As with DCPs made from video files, the first step is to create a new
‘Film’; select <guilabel>New</guilabel> from the
<guilabel>File</guilabel> menu and the new film dialogue will open as
shown in <xref linkend="fig-still-new-film"/>.
</figure>
<para>
-As with video DCPs, most of the default settings will be fine for a
-simple test. The one thing that you might wish to change is the
-length of the still. Select the <guilabel>Timing</guilabel> tab and
-you will see a <guilabel>Play length</guilabel> setting, as shown in <xref
+Most of the default settings will be fine for a simple test. The one
+thing that you might wish to change is the length of the still.
+Select the <guilabel>Timing</guilabel> tab and you will see a
+<guilabel>Play length</guilabel> setting, as shown in <xref
linkend="fig-timing-tab"/>.
</para>
<para>
Finally, as with video, you can choose <guilabel>Make DCP</guilabel>
from the <guilabel>Jobs</guilabel> menu to create your DCP. This will
-be much quicker than creating a video DCP, as DCP-o-matic only needs
+be much quicker than creating a DCP from a video file, as DCP-o-matic only needs
to encode a single frame which it can then repeat.
</para>
</chapter>
+<!-- ============================================================== -->
+<chapter xmlns="http://docbook.org/ns/docbook" version="5.0" xml:lang="en">
+<title>Manipulating existing DCPs</title>
+
+<para>
+Frequently DCP-o-matic is used to take content in formats such as MP4
+and convert it to JPEG2000 for a DCP. It can also be used
+to take existing DCPs and modify them in various ways.
+</para>
+
+<section>
+<title>Importing a DCP into DCP-o-matic</title>
+
+<para>
+If you want to do something to an existing DCP the first step is to
+import it. Click <guilabel>Add folder...</guilabel> and select your
+DCP's folder. It will be added to the DCP-o-matic project. If the
+DCP is unencrypted you can preview it in the normal way, though
+playback will be very slow as decoding of DCPs is almost as
+computationally intensive as encoding them.
+</para>
+
+</section>
+
+
+<section>
+<title>Decrypting encrypted DCPs</title>
+
+<para>
+DCPs can be encrypted (see <xref linkend="ch-encryption"/> for
+details). If you import an encrypted DCP you will need a key, in the
+form of a Key Delivery Message (KDM), to decrypt it.
+</para>
+
+<para>
+KDMs must be prepared by the organisation which created the DCP. They
+contain the keys to decrypt the DCP wrapped up in such a way that only
+the intended recipient can read them. You will need to provide the
+organisation with a certificate which identifies your copy of
+DCP-o-matic and allows them to create a KDM for you.
+</para>
+
+<para>
+To get DCP-o-matic's decryption certificate, open the Preferences
+dialogue (see <xref linkend="ch-preferences"/>) and go to the
+<guilabel>Keys</guilabel> tab. Click the <guilabel>Export DCP
+decryption certificate...</guilabel> button at the bottom of this tab
+and save the certificate. Send this certificate to the DCP creators
+and they can create a KDM to allow DCP-o-matic to decrypt their DCP.
+</para>
+
+<para>
+Once you have your KDM, right-click the DCP's name in DCP-o-matic and
+choose <guilabel>Add KDM...</guilabel>. Specify your KDM and (all
+being well) the DCP will be decrypted and become available for preview.
+</para>
+
+</section>
+
+
+<section>
+<title>Making a DCP from a DCP</title>
+
+<para>
+In many ways, using DCPs as <emphasis>content</emphasis> in
+DCP-o-matic is the same as using any other content. There are a few
+things to note, though.
+</para>
+
+
+<section>
+<title>Re-use of existing data</title>
+
+<para>
+Where possible DCP-o-matic will re-use existing JPEG2000-compressed
+data from DCP content without modification. This has the advantage
+that creation of the new DCP will be quick, as the time-consuming
+JPEG2000 encoding is not necessary.
+</para>
+
+<para>
+DCP-o-matic can do this if you <emphasis>avoid</emphasis> changes to
+the following content settings:
+</para>
+
+<itemizedlist>
+<listitem>Crop</listitem>
+<listitem>Scaling</listitem>
+<listitem>Subtitle burn-in</listitem>
+<listitem>Fades</listitem>
+<listitem>Colour conversion</listitem>
+</itemizedlist>
+
+<para>
+If you do change any of these settings on a piece of DCP content
+DCP-o-matic will decode and then re-encode the JPEG2000 data.
+</para>
+
+</section>
+
+
+<section>
+<title>Making overlay files</title>
+
+<para>
+With its default settings, DCP-o-matic will take any data from DCP
+content and copy it into the DCP that it creates. See <xref linkend="fig-dcp-copy"/>.
+</para>
+
+<figure id="fig-dcp-copy">
+<title>Creating a new DCP by copying an existing one</title>
+<mediaobject><imageobject><imagedata scale="100" fileref="diagrams/dcp-copy&dia;"/></imageobject></mediaobject>
+</figure>
+
+<para>
+This can be inefficient in some cases. Consider, for example, a film
+which has ten different translations for which the subtitles are
+different but video and audio are the same. If the video and audio
+content takes up, say, 100Gb this means that the set of DCPs for every
+translation would be about 1Tb with a lot of duplicated data.
+</para>
+
+<para>
+The DCP format has a solution to this problem. One DCP can refer to
+the ‘assets’ (picture, sound or subtitle) of another DCP.
+For our translation example this means that we could have a
+‘base’ DCP (often called the OV or Original Version)
+containing video, audio and one set of subtitles and then any number
+of overlay DCPs (often called VF or Version Files) which refer to the
+base version and replace the original subtitles with their own. <xref
+linkend="fig-dcp-refer"/> shows this principle for one of our
+translations. The DCP that we make refers to the original content
+DCP's video and audio rather than containing a copy.
+</para>
+
+<figure id="fig-dcp-refer">
+<title>Creating a new DCP by referring to an existing one</title>
+<mediaobject><imageobject><imagedata scale="100" fileref="diagrams/dcp-refer&dia;"/></imageobject></mediaobject>
+</figure>
+
+<para>
+To play back the subtitled DCP the projectionist ingests both the base
+(OV) DCP and the overlay (VF) DCP, then plays the VF one.
+</para>
+
+<para>
+To make a DCP like this:
+</para>
+
+<itemizedlist>
+<listitem>Import your ‘Content DCP’ to a DCP-o-matic project.</listitem>
+<listitem>Add whatever replacement you want in your new DCP (replacement subtitles or audio files, for example).</listitem>
+<listitem>Select the DCP in the content list</listitem>
+<listitem>Tick the <guilabel>Refer to existing DCP</guilabel> checkbox
+in the tabs for the parts of the DCP that you want to refer to in your
+new DCP. For example, to refer to the Content DCP's video and audio you would select the <guilabel>Video</guilabel> tab, click <guilabel>Refer to existing DCP</guilabel> then select the <guilabel>Audio</guilabel> tab and do the same.</listitem>
+<listitem>Do <guilabel>Make DCP</guilabel> as usual and your VF DCP will be created.</listitem>
+</itemizedlist>
+
+</section>
+
+</section>
+
+
+
+</chapter>
+<!-- ============================================================== -->
+
+
<!-- ============================================================== -->
<chapter xmlns="http://docbook.org/ns/docbook" version="5.0" xml:lang="en">
<title>Content settings</title>
<para>
The previous chapters showed DCP generation using the default
settings. DCP-o-matic offers a range of features to adjust the
-content that goes into your DCP, and this chapter describes those features in
-detail.
+content that goes into your DCP, and this chapter describes those
+features in detail.
</para>
<section>
<listitem>Subtitle — a file containing subtitle which will be
superimposed on the image of the DCP. These can be
-<guilabel>.srt</guilabel> or <guilabel>.xml</guilabel>
+<guilabel>.srt</guilabel>, <guilabel>.ssa</guilabel> or <guilabel>.xml</guilabel>
files.</listitem>
<listitem>DCP — an existing DCP.</listitem>
</figure>
<para>
-DCP-o-matic will extract subtitles from the content, if present, and
-they can be ‘burnt into’ the DCP (that is, they are
-included in the image and not overlaid by the projector) or included
-as a separate subtitle ‘asset’ within your DCP (in which
-case the projector overlays them onto the image on playback). The
-difference between these two arrangements is illustrated by <xref
-linkend="fig-burn-in"/> and <xref linkend="fig-discrete"/>
+DCP-o-matic can either:
+</para>
+
+<itemizedlist>
+ <listitem>Extract subtitles that are embedded in video files, or</listitem>
+ <listitem>Use subtitles from SubRip (<code>.srt</code>), SubStation
+ Alpha (<code>.ssa</code>) or DCP XML files. You may find the great
+ free program <ulink
+ url="http://www.nikse.dk/subtitleedit/">Subtitle Edit</ulink> useful
+ for creating such files.</listitem>
+</itemizedlist>
+
+<para>
+Embedded subtitles are usually represented using a set of bitmaps,
+especially on files that have come from DVD or BluRay. Such subtitles
+can (currently) only be ‘burnt’ into the DCP (that is,
+they are included in the image and not overlaid by the projector).
+</para>
+
+<para>
+With SubRip, SubStation Alpha or DCP subtitles you have the choice to
+either burn-in or include the subtitles as separate subtitle
+‘asset’ within your DCP (in which case the projector
+overlays them onto the image on playback). The difference between
+burn-in and overlay is illustrated by <xref linkend="fig-burn-in"/>
+and <xref linkend="fig-discrete"/>.
</para>
<figure id="fig-burn-in">
<title>Burnt-in subtitles</title>
<mediaobject>
<imageobject>
- <imagedata scale="80" fileref="diagrams/burn-in&dia;"/>
+ <imagedata scale="100" fileref="diagrams/burn-in&dia;"/>
</imageobject>
</mediaobject>
</figure>
<title>Separate subtitles</title>
<mediaobject>
<imageobject>
- <imagedata scale="80" fileref="diagrams/discrete&dia;"/>
+ <imagedata scale="100" fileref="diagrams/discrete&dia;"/>
</imageobject>
</mediaobject>
</figure>
every language.
</para>
-<para>
-Note that subtitles come in two types: text and bitmap. Text
-subtitles are expressed as plain text and can be either burnt into the
-image or included as a separate subtitle asset within the DCP. Bitmap
-subtitles, on the other hand, are expressed as pre-rendered bitmaps.
-They cannot (yet) be added to the DCP as a separate asset and must be
-burnt into the image.
-</para>
-
<para>
Select the <guilabel>Use Subtitles</guilabel> check-box to enable
-these subtitles.
+the subtitles in the selected content.
</para>
<para>
Select the <guilabel>Burn subtitles into image</guilabel> check-box to
burn these subtitles into the image; if this is not ticked the
subtitles will be included separately in the DCP to be rendered by the
-projector.
+projector. This check-box will always be ticked if you are using
+embedded ‘image’ subtitles.
</para>
<para>
that is used when the content has more than one.
</para>
+<para>
+If you are using non-embedded (text) subtitles you can see the
+subtitle text and timings by clicking the <guilabel>View...</guilabel>
+button, or specify the fonts that should be used by clicking <guilabel>Fonts...</guilabel>.
+</para>
+
+<para>
+With any subtitles you can click <guilabel>Appearance...</guilabel> to
+change how the subtitles look.
+</para>
+
</section>
<title>Timecode</title>
<mediaobject>
<imageobject>
- <imagedata fileref="diagrams/timecode&dia;"/>
+ <imagedata scale="100" fileref="diagrams/timecode&dia;"/>
</imageobject>
</mediaobject>
</figure>
<guilabel>Edit..</guilabel> button next to the key.
</para>
+<para>
+The <guilabel>Reels</guilabel> and <guilabel>Reel length</guilabel>
+controls specify how the DCP will be split up into
+‘reels’. See <xref linkend="sec-reels"/> below.
+</para>
+
<para>
The <guilabel>Standard</guilabel> option specifies which of the two
DCP standards DCP-o-matic should use. If in doubt, use SMPTE (the
more modern of the two).
</para>
+<para>
+Ticking the <guilabel>Upload DCP to TMS after it is made</guilabel>
+will ask DCP-o-matic to copy the finished DCP to your configured TMS (see <xref linkend="sec-prefs-tms"/>).
+</para>
+
<para>
At the bottom of the DCP tab are a further two tabs, one each to
contain the settings for the DCP's video and audio parts.
<para>
The <guilabel>Processor</guilabel> control allows you to select a
-process to apply to the audio before it goes into the DCP. Two processes are currently provided:
+process to apply to the audio before it goes into the DCP. Three processes are currently provided:
</para>
<itemizedlist>
<listitem>DCP Ls is input L bandpass-filtered between 4.8kHz and 20kHz.</listitem>
<listitem>DCP Rs is input R bandpass-filtered between 4.8kHz and 20kHz.</listitem>
</itemizedlist>
+<para>
+This upmixing algorithm is due to Gérald Maruccia.
+</para>
</listitem>
+<listitem>Stereo to 5.1 up-mixer B — this uses a different approach:
+<itemizedlist>
+ <listitem>DCP L is input L.</listitem>
+ <listitem>DCP R is input R.</listitem>
+ <listitem>DCP C is input L + input R taken down by 3dB.</listitem>
+ <listitem>DCP Lfe is DCP C bandpass filtered between 20Hz and 150Hz.</listitem>
+ <listitem>DCP Ls and Rs are input L - input R with a 20ms delay.</listitem>
</itemizedlist>
+</listitem>
+</itemizedlist>
+
+<!-- ============================================================== -->
+<section xml:id="sec-reels">
+<title>Reels</title>
<para>
-This upmixing algorithm is due to Gérald Maruccia.
+A ‘reel’ in a DCP is a subsection of the DCP, in the same
+way as a 35mm reel is a section of a film. A DCP can be split up into
+any number of reels and the joins (the equivalent to 35mm splices)
+between the reels are seamless.
</para>
+<para>
+There is no reason why you can't just use a single reel for the whole
+of your DCP, as there is no limit on their length. Many people choose
+to do this.
+</para>
+
+<para>
+There are, however, some possible advantages of splitting things up
+into reels:
+</para>
+
+<itemizedlist>
+<listitem>
+The picture, sound and subtitle data of the DCP will be
+split up into more smaller files on disk, rather than fewer larger
+files. This can be useful if the DCP is to be transferred on storage
+that have file size limits. The FAT32 filesystem, for example, can
+only hold files smaller than 4Gb. A 6Gb DCP with a single reel could
+not be transferred using a FAT32-formatted disk. If that DCP were
+split up into two 3Gb reels it could be transferred.
+</listitem>
+<listitem>
+It is easier to re-use DCP components if they are in reels. Consider,
+for example, a film company who wants to put a 5 second ident onto the
+beginning of DCPs that they distribute. If they receive a feature
+film DCP they can modify it to add their ident as a separate reel.
+This is easier than attaching the picture data in the DCP.
+</listitem>
+</itemizedlist>
+
+<para>
+DCP-o-matic offers three options for setting up the reels in your DCP:
+single reel, split by video content or custom.
+</para>
+
+<para>
+<guilabel>Single reel</guilabel>, as its name suggests, keeps the whole DCP as one reel.
+This is a perfectly good option if you have no particular reason to
+need reels.
+</para>
+
+<para>
+<guilabel>Split by video content</guilabel> puts each piece of source
+video content in its own reel, as shown in <xref linkend="fig-reels-by-video"/>.
+</para>
+
+<figure id="fig-reels-by-video">
+<title>Making reels using split by video content</title>
+<mediaobject><imageobject><imagedata scale="100" fileref="diagrams/reels-by-video&dia;"/></imageobject></mediaobject>
+</figure>
+
+<para>
+Here we have three video files (<code>ident.mp4</code>,
+<code>feature.ts</code> and <code>cred.mov</code>). With
+<guilabel>split by video content</guilabel> DCP-o-matic makes a new
+reel to hold each video file.
+</para>
+
+<para>
+<guilabel>Custom</guilabel> splits reels by the size of the files that
+will make up their video content. With <guilabel>Custom</guilabel>
+you must specify a reel length in Gb. Then no file in the DCP will be larger than this reel length.
+</para>
+
+</section>
+
<!-- ============================================================== -->
<section>
<para>
The first part is simple: ticking the <guilabel>Encrypted</guilabel>
-box in the <guilabel>DCP</guilabel> tab of DCP-o-matic will encrypt
-the DCP using a random key that DCP-o-matic generates. The key will
-be written to the film's metadata file, which should be kept
-secure.
+box in the <guilabel>DCP</guilabel> tab will instruct DCP-o-matic to
+encrypt the DCP that it makes using a random key that DCP-o-matic
+generates. The key will be written to the film's metadata file, which
+should be kept secure.
</para>
<para>
</para>
<para>
-The second part is to generate KDMs for the cinemas that you wish to
-allow to play your DCP. This is done using the <guilabel>Make
-KDMs</guilabel> option on the <guilabel>Jobs</guilabel> menu. This
-will open the KDM dialogue box, as shown in <xref linkend="fig-kdm"/>.
+The second part of distributions is to generate KDMs for the cinemas
+that you wish to allow to play your DCP. There are two approaches to
+this within DCP-o-matic: using the project, or using a DKDM. These
+approaches are now described in turn.
+</para>
+
+<section>
+<title>Creating KDMs from a DCP-o-matic project</title>
+
+<para>
+You can create KDMs from inside a DCP-o-matic project using the
+<guilabel>Make KDMs</guilabel> option on the <guilabel>Jobs</guilabel>
+menu. This will open the KDM dialogue box, as shown in <xref
+linkend="fig-kdm"/>.
</para>
<figure id="fig-kdm">
</para>
<para>
-DCP-o-matic can store these certificates to make life easier. It
-stores details of cinemas and screens within those cinemas. Each
-screen has a certificate for its projector. DCP-o-matic can generate
-KDMs for any screens that it knows about.
+DCP-o-matic can store these certificates along with details of their
+cinemas and screens within those cinemas. Each screen has a
+certificate for its projector (and optionally certificates for other
+trusted devices, such as the sound processor). DCP-o-matic can
+generate KDMs for any screens that it knows about.
</para>
<para>
To add a cinema, click <guilabel>Add Cinema...</guilabel>. This opens
a dialogue box into which you can enter the cinema's name, and
optionally an email address. This email address can be used to
-get DCP-o-matic to deliver KDMs via email, but it is optional.
+get DCP-o-matic to deliver KDMs via email.
</para>
<para>
manufacturers can be downloaded from databases provided by the
manufacturer. Currently this is supported for Doremi and Dolby
equipment. If you are targeting a screen with equipment by one of
-these manufacturers you can select Doremi or Dolby from the
-<guilabel>Server manufacturer</guilabel> selection and then click
-<guilabel>Download</guilabel>. In the next dialogue box, enter
-details of the screen and click <guilabel>Download</guilabel> and, all
-being well, the certificate will be fetched.
+these manufacturers you can click <guilabel>Download</guilabel> then
+enter the serial number of the server in the screen and click
+<guilabel>Download</guilabel> again and, all being well, the certificate
+will be fetched.
</para>
<para>
doubt, use <guilabel>Modified Transitional 1</guilabel>.
</para>
+<note>
+The differences between the three KDM types are fairly subtle.
+<guilabel>DCI Specific</guilabel> and <guilabel>DCI Any</guilabel> add
+a <code><ContentAuthenticator></code> tag to the KDM which
+allows the exhibitor to check that the DCP and KDM have come from a
+bona-fide source. In addition, <guilabel>DCI Specific</guilabel> adds
+information on trusted devices to the KDM. This allows the KDM
+creator to specify devices (such as sound processors) that are allowed
+to use keys delivered by the KDM. At present it is not clear how
+widely the <guilabel>DCI Specific</guilabel> and <guilabel>DCI
+Any</guilabel> features are supported (or even tolerated) by servers
+so you are advised to use <guilabel>Modified Transitional
+1</guilabel>.
+</note>
+
<para>
Finally, choose what you want to do with the KDMs. They can be
written to disk, to a location that you can specify by clicking
<guilabel>Browse</guilabel>. Alternatively, if you choose
<guilabel>Send by email</guilabel> the KDMs will be zipped up and
-emailed to the appropriate cinema email addresses. Click OK to
-generate the KDMs.
+emailed to the appropriate cinema email addresses. Click
+<guilabel>Make KDMs</guilabel> to generate the KDMs.
+</para>
+
+</section>
+
+<section>
+<title>Creating KDMs using a DKDM</title>
+</section>
+
+<para>
+It can be inconvenient to need a whole DCP-o-matic project just to
+create KDMs for its film. Perhaps you want to archive the project to
+save space, or create KDMs on a different machine. In such situations
+it is easier to use a DKDM. This is a normal KDM, but instead of
+being targeted at a projection system (to allow it to decrypt the
+content) it is targeted at a particular users's certificate. This
+means that the certificate owner can create new KDMs for other users.
+The DKDM holds everything that is required to create further KDMs.
+</para>
+
+<para>
+Sometimes it is useful to create DKDMs that can be used by
+DCP-o-matic. If you create such a DKDM you can keep it and then, at
+any point in the future, use DCP-o-matic's standalone KDM creator to
+make KDMs for the DKDM's film for any cinema.
+</para>
+
+<para>
+In other cases a DKDM is sent to a 3rd party so that they can create
+KDMs for your films. This can be useful if, for example, you have a
+distributor who provides 24-hour KDM support to cinemas and can create
+KDMs for anybody that requires them at short notice.
+</para>
+
+<para>
+To create a DKDM for DCP-o-matic, open your encrypted project and
+select <guilabel>Make DKDM for DCP-o-matic...</guilabel> from the
+<guilabel>Jobs</guilabel> menu. Select the CPL that you want to make
+the DKDM for and click <guilabel>OK</guilabel>. This DKDM will then
+be available in the KDM creator. This is a separate program which you
+can start from the same place that you start the ‘normal’
+DCP-o-matic. Its window is shown in <xref linkend="fig-kdm-creator"/>.
+</para>
+
+<figure id="fig-kdm-creator">
+ <title>The KDM creator</title>
+ <mediaobject>
+ <imageobject>
+ <imagedata fileref="screenshots/kdm-creator&scs;"/>
+ </imageobject>
+ </mediaobject>
+</figure>
+
+<para>
+To create KDMs, select the cinema(s) and/or screens that you want KDMs
+to be created for, the date range, the DCP that the KDMs are for and
+the destination for the KDMs and click <guilabel>Create
+KDMs</guilabel>.
+</para>
+
+<para>
+By default the <guilabel>DKDM</guilabel> list will list any DCPs for
+which you have clicked <guilabel>Make DKDM for
+DCP-o-matic</guilabel>in the main DCP-o-matic program. If you have
+other DKDMs you can add them by clicking <guilabel>Add...</guilabel> and
+specifying the file containing the DKDM.
+</para>
+
+<para>
+If another organisation wants to send you a DKDM they will ask you for
+a target certificate. You can get DCP-o-matic's target certificate by
+opening <guilabel>Preferences</guilabel> and clicking <guilabel>Export
+DCP decryption certificate...</guilabel> in the <guilabel>Keys</guilabel>
+tab.
+
</para>
</section>
+<section>
+<title>Encryption overview</title>
+
+<figure id="fig-encryption-overview">
+ <title>Overview of encryption</title>
+ <mediaobject>
+ <imageobject>
+ <imagedata fileref="diagrams/crypt&dia;"/>
+ </imageobject>
+ </mediaobject>
+</figure>
+
+</section>
</chapter>
</section>
+<!-- ============================================================== -->
+<section>
+<title>Cinema and screen database file</title>
+
+<para>
+This option allows you to change the file that DCP-o-matic uses to
+store details of the cinemas and screens used to make KDMs.
+</para>
+
+</section>
+
+<section>
+<title>Integrated loudness</title>
+
+<para>
+If <guilabel>Find integrated loudness, true peak and loudness range
+when analysing audio</guilabel> is ticked, DCP-o-matic will do extra
+work when analysing audio. Leave this ticked if the extra parameters
+are useful to you. If not, untick it and audio analysis will be
+faster.
+</para>
+
+</section>
+
<!-- ============================================================== -->
<section>
<title>Updates</title>
If you want to import an encrypted DCP you will need to give the
decryption certificate to the distributor of the DCP so that they can
generate a DKDM for you. You can save this certificate to disk by
-clicking <guilabel>Export DCP decryption certificate</guilabel>. As
+clicking <guilabel>Export DCP decryption certificate...</guilabel>. As
with the signing chain, DCP-o-matic will create a certificate chain
and private key for you. You can also choose to load your own
certificates and key or re-make the chain and key with new, random
<title>Creating a new film</title>
<mediaobject>
<imageobject>
- <imagedata fileref="diagrams/file-structure&dia;"/>
+ <imagedata scale="100" fileref="diagrams/file-structure&dia;"/>
</imageobject>
</mediaobject>
</figure>
Following this is the DCP itself:
<code>DCP-TEST_EN-XX_UK-U_51_2K_CSY_20130218_CSY_OV</code>. This
contains some small XML files, which describe the DCP, and two large
-MXF files, which contain the DCP's audio and video data. This folder
+MXF files, which contain the DCP's audio and video data. It may also
+contain subtitles in either XML or MXF format. This folder
(<code>DCP-TEST_EN-XX_...</code>) is what you should ingest, or pass
to the cinema which is showing your DCP.
</para>
projects / dcpomatic.git / blobdiff