Add some hacks, mostly subtitle alignment tests.

11 files changed, 722 insertions, 0 deletions

diff --git a/hacks/subtitle_alignment/build.sh b/hacks/subtitle_alignment/build.sh
new file mode 100644
index 000000000..acd08b08a
--- /dev/null
+++ b/hacks/subtitle_alignment/build.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+
+run/dcpomatic2_cli hacks/subtitle_alignment/dcp_1
+run/dcpomatic2_cli hacks/subtitle_alignment/dcp_2
diff --git a/hacks/subtitle_alignment/dcp_1/metadata.xml b/hacks/subtitle_alignment/dcp_1/metadata.xml
new file mode 100644
index 000000000..4c61c5d39
--- /dev/null
+++ b/hacks/subtitle_alignment/dcp_1/metadata.xml
@@ -0,0 +1,97 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Metadata>
+  <Version>32</Version>
+  <Name>subs test 1</Name>
+  <UseISDCFName>1</UseISDCFName>
+  <DCPContentType>TST</DCPContentType>
+  <Container>185</Container>
+  <Resolution>2K</Resolution>
+  <J2KBandwidth>50000000</J2KBandwidth>
+  <ISDCFMetadata>
+    <ContentVersion>1</ContentVersion>
+    <AudioLanguage>XX</AudioLanguage>
+    <SubtitleLanguage>EN</SubtitleLanguage>
+    <Territory></Territory>
+    <Rating></Rating>
+    <Studio></Studio>
+    <Facility></Facility>
+    <PackageType></PackageType>
+    <TempVersion>0</TempVersion>
+    <PreRelease>0</PreRelease>
+    <RedBand>0</RedBand>
+    <Chain></Chain>
+    <TwoDVersionOfThreeD>0</TwoDVersionOfThreeD>
+    <MasteredLuminance></MasteredLuminance>
+  </ISDCFMetadata>
+  <VideoFrameRate>24</VideoFrameRate>
+  <ISDCFDate>20150826</ISDCFDate>
+  <AudioChannels>6</AudioChannels>
+  <ThreeD>0</ThreeD>
+  <SequenceVideo>1</SequenceVideo>
+  <Interop>0</Interop>
+  <Signed>1</Signed>
+  <Encrypted>0</Encrypted>
+  <Key>530ea647e9de4fc12cbf3eed06673dd9</Key>
+  <Playlist>
+    <Content>
+      <Type>Image</Type>
+      <Path>/home/c.hetherington/src/dcpomatic2/hacks/subtitle_alignment/grid.png</Path>
+      <Digest>dfe02ada2710af47c30eee9c20054e7c61668</Digest>
+      <Position>0</Position>
+      <TrimStart>0</TrimStart>
+      <TrimEnd>0</TrimEnd>
+      <VideoLength>720</VideoLength>
+      <VideoWidth>1998</VideoWidth>
+      <VideoHeight>1080</VideoHeight>
+      <VideoFrameRate>24</VideoFrameRate>
+      <VideoFrameType>0</VideoFrameType>
+      <LeftCrop>0</LeftCrop>
+      <RightCrop>0</RightCrop>
+      <TopCrop>0</TopCrop>
+      <BottomCrop>0</BottomCrop>
+      <Scale>
+        <Ratio>185</Ratio>
+      </Scale>
+      <ColourConversion>
+        <InputTransferFunction>
+          <Type>ModifiedGamma</Type>
+          <Power>2.4</Power>
+          <Threshold>0.04045</Threshold>
+          <A>0.055</A>
+          <B>12.92</B>
+        </InputTransferFunction>
+        <YUVToRGB>0</YUVToRGB>
+        <RedX>0.64</RedX>
+        <RedY>0.33</RedY>
+        <GreenX>0.3</GreenX>
+        <GreenY>0.6</GreenY>
+        <BlueX>0.15</BlueX>
+        <BlueY>0.06</BlueY>
+        <WhiteX>0.3127</WhiteX>
+        <WhiteY>0.329</WhiteY>
+        <OutputGamma>2.6</OutputGamma>
+      </ColourConversion>
+      <FadeIn>0</FadeIn>
+      <FadeOut>0</FadeOut>
+    </Content>
+    <Content>
+      <Type>DCPSubtitle</Type>
+      <Path>/home/c.hetherington/src/dcpomatic2/hacks/subtitle_alignment/dcp_1/subs.xml</Path>
+      <Digest>21cddc1e6a989a3dde356f4288fe3fac1231</Digest>
+      <Position>0</Position>
+      <TrimStart>0</TrimStart>
+      <TrimEnd>0</TrimEnd>
+      <UseSubtitles>1</UseSubtitles>
+      <BurnSubtitles>0</BurnSubtitles>
+      <SubtitleXOffset>0</SubtitleXOffset>
+      <SubtitleYOffset>0</SubtitleYOffset>
+      <SubtitleXScale>1</SubtitleXScale>
+      <SubtitleYScale>1</SubtitleYScale>
+      <SubtitleLanguage>en</SubtitleLanguage>
+      <Font>
+        <Id>arial</Id>
+      </Font>
+      <Length>2880000</Length>
+    </Content>
+  </Playlist>
+</Metadata>
diff --git a/hacks/subtitle_alignment/dcp_1/subs.xml b/hacks/subtitle_alignment/dcp_1/subs.xml
new file mode 100644
index 000000000..328801b66
--- /dev/null
+++ b/hacks/subtitle_alignment/dcp_1/subs.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<SubtitleReel xmlns="http://www.smpte-ra.org/schemas/428-7/2010/DCST">
+<Id>urn:uuid:d351291b-d722-48b7-baba-e7ed2ea6cc69</Id>
+<ContentTitleText></ContentTitleText>
+<AnnotationText></AnnotationText>
+<IssueDate>2015-08-26T18:04:50+01:00</IssueDate>
+<ReelNumber>1</ReelNumber>
+<Language>en</Language>
+<EditRate>24 1</EditRate>
+<TimeCodeRate>24</TimeCodeRate>
+<StartTime>00:00:00:00</StartTime>
+<LoadFont ID="arial">urn:uuid:b238ab60-719d-11e4-82f8-0800200c9a65</LoadFont>
+<SubtitleList>
+<Font ID="arial" Color="FFFFFFFF" Weight="normal" Size="42">
+
+<Subtitle SpotNumber="1" TimeIn="00:00:00:00" TimeOut="00:00:10:00" FadeUpTime="00:00:00:00" FadeDownTime="00:00:00:00">
+<Text Valign="top" Vposition="60">Align top position 60%</Text>
+</Subtitle>
+<Subtitle SpotNumber="1" TimeIn="00:00:10:00" TimeOut="00:00:20:00" FadeUpTime="00:00:00:00" FadeDownTime="00:00:00:00">
+<Text Valign="top" Vposition="70">Align top position 70%</Text>
+</Subtitle>
+<Subtitle SpotNumber="1" TimeIn="00:00:20:00" TimeOut="00:00:30:00" FadeUpTime="00:00:00:00" FadeDownTime="00:00:00:00">
+<Text Valign="top" Vposition="80">Align top position 80%</Text>
+</Subtitle>
+</Font>
+</SubtitleList>
+</SubtitleReel>
\ No newline at end of file
diff --git a/hacks/subtitle_alignment/dcp_2/metadata.xml b/hacks/subtitle_alignment/dcp_2/metadata.xml
new file mode 100644
index 000000000..a5294a701
--- /dev/null
+++ b/hacks/subtitle_alignment/dcp_2/metadata.xml
@@ -0,0 +1,97 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Metadata>
+  <Version>32</Version>
+  <Name>subs test 2</Name>
+  <UseISDCFName>1</UseISDCFName>
+  <DCPContentType>TST</DCPContentType>
+  <Container>185</Container>
+  <Resolution>2K</Resolution>
+  <J2KBandwidth>50000000</J2KBandwidth>
+  <ISDCFMetadata>
+    <ContentVersion>1</ContentVersion>
+    <AudioLanguage></AudioLanguage>
+    <SubtitleLanguage></SubtitleLanguage>
+    <Territory></Territory>
+    <Rating></Rating>
+    <Studio></Studio>
+    <Facility></Facility>
+    <PackageType></PackageType>
+    <TempVersion>0</TempVersion>
+    <PreRelease>0</PreRelease>
+    <RedBand>0</RedBand>
+    <Chain></Chain>
+    <TwoDVersionOfThreeD>0</TwoDVersionOfThreeD>
+    <MasteredLuminance></MasteredLuminance>
+  </ISDCFMetadata>
+  <VideoFrameRate>24</VideoFrameRate>
+  <ISDCFDate>20150826</ISDCFDate>
+  <AudioChannels>6</AudioChannels>
+  <ThreeD>0</ThreeD>
+  <SequenceVideo>1</SequenceVideo>
+  <Interop>0</Interop>
+  <Signed>1</Signed>
+  <Encrypted>0</Encrypted>
+  <Key>530ea647e9de4fc12cbf3eed06673dd9</Key>
+  <Playlist>
+    <Content>
+      <Type>Image</Type>
+      <Path>/home/c.hetherington/src/dcpomatic2/hacks/subtitle_alignment/grid.png</Path>
+      <Digest>dfe02ada2710af47c30eee9c20054e7c61668</Digest>
+      <Position>0</Position>
+      <TrimStart>0</TrimStart>
+      <TrimEnd>0</TrimEnd>
+      <VideoLength>720</VideoLength>
+      <VideoWidth>1998</VideoWidth>
+      <VideoHeight>1080</VideoHeight>
+      <VideoFrameRate>24</VideoFrameRate>
+      <VideoFrameType>0</VideoFrameType>
+      <LeftCrop>0</LeftCrop>
+      <RightCrop>0</RightCrop>
+      <TopCrop>0</TopCrop>
+      <BottomCrop>0</BottomCrop>
+      <Scale>
+        <Ratio>185</Ratio>
+      </Scale>
+      <ColourConversion>
+        <InputTransferFunction>
+          <Type>ModifiedGamma</Type>
+          <Power>2.4</Power>
+          <Threshold>0.04045</Threshold>
+          <A>0.055</A>
+          <B>12.92</B>
+        </InputTransferFunction>
+        <YUVToRGB>0</YUVToRGB>
+        <RedX>0.64</RedX>
+        <RedY>0.33</RedY>
+        <GreenX>0.3</GreenX>
+        <GreenY>0.6</GreenY>
+        <BlueX>0.15</BlueX>
+        <BlueY>0.06</BlueY>
+        <WhiteX>0.3127</WhiteX>
+        <WhiteY>0.329</WhiteY>
+        <OutputGamma>2.6</OutputGamma>
+      </ColourConversion>
+      <FadeIn>0</FadeIn>
+      <FadeOut>0</FadeOut>
+    </Content>
+    <Content>
+      <Type>DCPSubtitle</Type>
+      <Path>/home/c.hetherington/src/dcpomatic2/hacks/subtitle_alignment/dcp_2/subs.xml</Path>
+      <Digest>01f3845eeebfec3ed64bee961d73ec5f1249</Digest>
+      <Position>0</Position>
+      <TrimStart>0</TrimStart>
+      <TrimEnd>0</TrimEnd>
+      <UseSubtitles>1</UseSubtitles>
+      <BurnSubtitles>0</BurnSubtitles>
+      <SubtitleXOffset>0</SubtitleXOffset>
+      <SubtitleYOffset>0</SubtitleYOffset>
+      <SubtitleXScale>1</SubtitleXScale>
+      <SubtitleYScale>1</SubtitleYScale>
+      <SubtitleLanguage>en</SubtitleLanguage>
+      <Font>
+        <Id>arial</Id>
+      </Font>
+      <Length>2880000</Length>
+    </Content>
+  </Playlist>
+</Metadata>
diff --git a/hacks/subtitle_alignment/dcp_2/subs.xml b/hacks/subtitle_alignment/dcp_2/subs.xml
new file mode 100644
index 000000000..4332a219a
--- /dev/null
+++ b/hacks/subtitle_alignment/dcp_2/subs.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<SubtitleReel xmlns="http://www.smpte-ra.org/schemas/428-7/2010/DCST">
+<Id>urn:uuid:d351291b-d722-48b7-baba-e7ed2ea6cc69</Id>
+<ContentTitleText></ContentTitleText>
+<AnnotationText></AnnotationText>
+<IssueDate>2015-08-26T18:04:50+01:00</IssueDate>
+<ReelNumber>1</ReelNumber>
+<Language>en</Language>
+<EditRate>24 1</EditRate>
+<TimeCodeRate>24</TimeCodeRate>
+<StartTime>00:00:00:00</StartTime>
+<LoadFont ID="arial">urn:uuid:b238ab60-719d-11e4-82f8-0800200c9a65</LoadFont>
+<SubtitleList>
+<Font ID="arial" Color="FFFFFFFF" Weight="normal" Size="42">
+
+<Subtitle SpotNumber="1" TimeIn="00:00:00:00" TimeOut="00:00:10:00" FadeUpTime="00:00:00:00" FadeDownTime="00:00:00:00">
+<Text Valign="bottom" Vposition="20">Align bottom position 20%</Text>
+</Subtitle>
+<Subtitle SpotNumber="1" TimeIn="00:00:10:00" TimeOut="00:00:20:00" FadeUpTime="00:00:00:00" FadeDownTime="00:00:00:00">
+<Text Valign="bottom" Vposition="30">Align bottom position 30%</Text>
+</Subtitle>
+<Subtitle SpotNumber="1" TimeIn="00:00:20:00" TimeOut="00:00:30:00" FadeUpTime="00:00:00:00" FadeDownTime="00:00:00:00">
+<Text Valign="bottom" Vposition="40">Align bottom position 40%</Text>
+</Subtitle>
+</Font>
+</SubtitleList>
+</SubtitleReel>
\ No newline at end of file
diff --git a/hacks/subtitle_alignment/dcp_3/metadata.xml b/hacks/subtitle_alignment/dcp_3/metadata.xml
new file mode 100644
index 000000000..a5f6186f2
--- /dev/null
+++ b/hacks/subtitle_alignment/dcp_3/metadata.xml
@@ -0,0 +1,97 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Metadata>
+  <Version>32</Version>
+  <Name>subs test 1</Name>
+  <UseISDCFName>1</UseISDCFName>
+  <DCPContentType>TST</DCPContentType>
+  <Container>185</Container>
+  <Resolution>2K</Resolution>
+  <J2KBandwidth>50000000</J2KBandwidth>
+  <ISDCFMetadata>
+    <ContentVersion>1</ContentVersion>
+    <AudioLanguage>XX</AudioLanguage>
+    <SubtitleLanguage>EN</SubtitleLanguage>
+    <Territory></Territory>
+    <Rating></Rating>
+    <Studio></Studio>
+    <Facility></Facility>
+    <PackageType></PackageType>
+    <TempVersion>0</TempVersion>
+    <PreRelease>0</PreRelease>
+    <RedBand>0</RedBand>
+    <Chain></Chain>
+    <TwoDVersionOfThreeD>0</TwoDVersionOfThreeD>
+    <MasteredLuminance></MasteredLuminance>
+  </ISDCFMetadata>
+  <VideoFrameRate>24</VideoFrameRate>
+  <ISDCFDate>20150826</ISDCFDate>
+  <AudioChannels>6</AudioChannels>
+  <ThreeD>0</ThreeD>
+  <SequenceVideo>1</SequenceVideo>
+  <Interop>1</Interop>
+  <Signed>1</Signed>
+  <Encrypted>0</Encrypted>
+  <Key>530ea647e9de4fc12cbf3eed06673dd9</Key>
+  <Playlist>
+    <Content>
+      <Type>Image</Type>
+      <Path>/home/c.hetherington/src/dcpomatic2/hacks/subtitle_alignment/grid.png</Path>
+      <Digest>dfe02ada2710af47c30eee9c20054e7c61668</Digest>
+      <Position>0</Position>
+      <TrimStart>0</TrimStart>
+      <TrimEnd>0</TrimEnd>
+      <VideoLength>720</VideoLength>
+      <VideoWidth>1998</VideoWidth>
+      <VideoHeight>1080</VideoHeight>
+      <VideoFrameRate>24</VideoFrameRate>
+      <VideoFrameType>0</VideoFrameType>
+      <LeftCrop>0</LeftCrop>
+      <RightCrop>0</RightCrop>
+      <TopCrop>0</TopCrop>
+      <BottomCrop>0</BottomCrop>
+      <Scale>
+        <Ratio>185</Ratio>
+      </Scale>
+      <ColourConversion>
+        <InputTransferFunction>
+          <Type>ModifiedGamma</Type>
+          <Power>2.4</Power>
+          <Threshold>0.04045</Threshold>
+          <A>0.055</A>
+          <B>12.92</B>
+        </InputTransferFunction>
+        <YUVToRGB>0</YUVToRGB>
+        <RedX>0.64</RedX>
+        <RedY>0.33</RedY>
+        <GreenX>0.3</GreenX>
+        <GreenY>0.6</GreenY>
+        <BlueX>0.15</BlueX>
+        <BlueY>0.06</BlueY>
+        <WhiteX>0.3127</WhiteX>
+        <WhiteY>0.329</WhiteY>
+        <OutputGamma>2.6</OutputGamma>
+      </ColourConversion>
+      <FadeIn>0</FadeIn>
+      <FadeOut>0</FadeOut>
+    </Content>
+    <Content>
+      <Type>DCPSubtitle</Type>
+      <Path>/home/c.hetherington/src/dcpomatic2/hacks/subtitle_alignment/dcp_3/subs.xml</Path>
+      <Digest>21cddc1e6a989a3dde356f4288fe3fac1231</Digest>
+      <Position>0</Position>
+      <TrimStart>0</TrimStart>
+      <TrimEnd>0</TrimEnd>
+      <UseSubtitles>1</UseSubtitles>
+      <BurnSubtitles>0</BurnSubtitles>
+      <SubtitleXOffset>0</SubtitleXOffset>
+      <SubtitleYOffset>0</SubtitleYOffset>
+      <SubtitleXScale>1</SubtitleXScale>
+      <SubtitleYScale>1</SubtitleYScale>
+      <SubtitleLanguage>en</SubtitleLanguage>
+      <Font>
+        <Id>arial</Id>
+      </Font>
+      <Length>2880000</Length>
+    </Content>
+  </Playlist>
+</Metadata>
diff --git a/hacks/subtitle_alignment/dcp_3/subs.xml b/hacks/subtitle_alignment/dcp_3/subs.xml
new file mode 100644
index 000000000..328801b66
--- /dev/null
+++ b/hacks/subtitle_alignment/dcp_3/subs.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<SubtitleReel xmlns="http://www.smpte-ra.org/schemas/428-7/2010/DCST">
+<Id>urn:uuid:d351291b-d722-48b7-baba-e7ed2ea6cc69</Id>
+<ContentTitleText></ContentTitleText>
+<AnnotationText></AnnotationText>
+<IssueDate>2015-08-26T18:04:50+01:00</IssueDate>
+<ReelNumber>1</ReelNumber>
+<Language>en</Language>
+<EditRate>24 1</EditRate>
+<TimeCodeRate>24</TimeCodeRate>
+<StartTime>00:00:00:00</StartTime>
+<LoadFont ID="arial">urn:uuid:b238ab60-719d-11e4-82f8-0800200c9a65</LoadFont>
+<SubtitleList>
+<Font ID="arial" Color="FFFFFFFF" Weight="normal" Size="42">
+
+<Subtitle SpotNumber="1" TimeIn="00:00:00:00" TimeOut="00:00:10:00" FadeUpTime="00:00:00:00" FadeDownTime="00:00:00:00">
+<Text Valign="top" Vposition="60">Align top position 60%</Text>
+</Subtitle>
+<Subtitle SpotNumber="1" TimeIn="00:00:10:00" TimeOut="00:00:20:00" FadeUpTime="00:00:00:00" FadeDownTime="00:00:00:00">
+<Text Valign="top" Vposition="70">Align top position 70%</Text>
+</Subtitle>
+<Subtitle SpotNumber="1" TimeIn="00:00:20:00" TimeOut="00:00:30:00" FadeUpTime="00:00:00:00" FadeDownTime="00:00:00:00">
+<Text Valign="top" Vposition="80">Align top position 80%</Text>
+</Subtitle>
+</Font>
+</SubtitleList>
+</SubtitleReel>
\ No newline at end of file
diff --git a/hacks/subtitle_alignment/dcp_4/metadata.xml b/hacks/subtitle_alignment/dcp_4/metadata.xml
new file mode 100644
index 000000000..f78fb42a1
--- /dev/null
+++ b/hacks/subtitle_alignment/dcp_4/metadata.xml
@@ -0,0 +1,97 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Metadata>
+  <Version>32</Version>
+  <Name>subs test 2</Name>
+  <UseISDCFName>1</UseISDCFName>
+  <DCPContentType>TST</DCPContentType>
+  <Container>185</Container>
+  <Resolution>2K</Resolution>
+  <J2KBandwidth>50000000</J2KBandwidth>
+  <ISDCFMetadata>
+    <ContentVersion>1</ContentVersion>
+    <AudioLanguage></AudioLanguage>
+    <SubtitleLanguage></SubtitleLanguage>
+    <Territory></Territory>
+    <Rating></Rating>
+    <Studio></Studio>
+    <Facility></Facility>
+    <PackageType></PackageType>
+    <TempVersion>0</TempVersion>
+    <PreRelease>0</PreRelease>
+    <RedBand>0</RedBand>
+    <Chain></Chain>
+    <TwoDVersionOfThreeD>0</TwoDVersionOfThreeD>
+    <MasteredLuminance></MasteredLuminance>
+  </ISDCFMetadata>
+  <VideoFrameRate>24</VideoFrameRate>
+  <ISDCFDate>20150826</ISDCFDate>
+  <AudioChannels>6</AudioChannels>
+  <ThreeD>0</ThreeD>
+  <SequenceVideo>1</SequenceVideo>
+  <Interop>1</Interop>
+  <Signed>1</Signed>
+  <Encrypted>0</Encrypted>
+  <Key>530ea647e9de4fc12cbf3eed06673dd9</Key>
+  <Playlist>
+    <Content>
+      <Type>Image</Type>
+      <Path>/home/c.hetherington/src/dcpomatic2/hacks/subtitle_alignment/grid.png</Path>
+      <Digest>dfe02ada2710af47c30eee9c20054e7c61668</Digest>
+      <Position>0</Position>
+      <TrimStart>0</TrimStart>
+      <TrimEnd>0</TrimEnd>
+      <VideoLength>720</VideoLength>
+      <VideoWidth>1998</VideoWidth>
+      <VideoHeight>1080</VideoHeight>
+      <VideoFrameRate>24</VideoFrameRate>
+      <VideoFrameType>0</VideoFrameType>
+      <LeftCrop>0</LeftCrop>
+      <RightCrop>0</RightCrop>
+      <TopCrop>0</TopCrop>
+      <BottomCrop>0</BottomCrop>
+      <Scale>
+        <Ratio>185</Ratio>
+      </Scale>
+      <ColourConversion>
+        <InputTransferFunction>
+          <Type>ModifiedGamma</Type>
+          <Power>2.4</Power>
+          <Threshold>0.04045</Threshold>
+          <A>0.055</A>
+          <B>12.92</B>
+        </InputTransferFunction>
+        <YUVToRGB>0</YUVToRGB>
+        <RedX>0.64</RedX>
+        <RedY>0.33</RedY>
+        <GreenX>0.3</GreenX>
+        <GreenY>0.6</GreenY>
+        <BlueX>0.15</BlueX>
+        <BlueY>0.06</BlueY>
+        <WhiteX>0.3127</WhiteX>
+        <WhiteY>0.329</WhiteY>
+        <OutputGamma>2.6</OutputGamma>
+      </ColourConversion>
+      <FadeIn>0</FadeIn>
+      <FadeOut>0</FadeOut>
+    </Content>
+    <Content>
+      <Type>DCPSubtitle</Type>
+      <Path>/home/c.hetherington/src/dcpomatic2/hacks/subtitle_alignment/dcp_4/subs.xml</Path>
+      <Digest>01f3845eeebfec3ed64bee961d73ec5f1249</Digest>
+      <Position>0</Position>
+      <TrimStart>0</TrimStart>
+      <TrimEnd>0</TrimEnd>
+      <UseSubtitles>1</UseSubtitles>
+      <BurnSubtitles>0</BurnSubtitles>
+      <SubtitleXOffset>0</SubtitleXOffset>
+      <SubtitleYOffset>0</SubtitleYOffset>
+      <SubtitleXScale>1</SubtitleXScale>
+      <SubtitleYScale>1</SubtitleYScale>
+      <SubtitleLanguage>en</SubtitleLanguage>
+      <Font>
+        <Id>arial</Id>
+      </Font>
+      <Length>2880000</Length>
+    </Content>
+  </Playlist>
+</Metadata>
diff --git a/hacks/subtitle_alignment/dcp_4/subs.xml b/hacks/subtitle_alignment/dcp_4/subs.xml
new file mode 100644
index 000000000..4332a219a
--- /dev/null
+++ b/hacks/subtitle_alignment/dcp_4/subs.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<SubtitleReel xmlns="http://www.smpte-ra.org/schemas/428-7/2010/DCST">
+<Id>urn:uuid:d351291b-d722-48b7-baba-e7ed2ea6cc69</Id>
+<ContentTitleText></ContentTitleText>
+<AnnotationText></AnnotationText>
+<IssueDate>2015-08-26T18:04:50+01:00</IssueDate>
+<ReelNumber>1</ReelNumber>
+<Language>en</Language>
+<EditRate>24 1</EditRate>
+<TimeCodeRate>24</TimeCodeRate>
+<StartTime>00:00:00:00</StartTime>
+<LoadFont ID="arial">urn:uuid:b238ab60-719d-11e4-82f8-0800200c9a65</LoadFont>
+<SubtitleList>
+<Font ID="arial" Color="FFFFFFFF" Weight="normal" Size="42">
+
+<Subtitle SpotNumber="1" TimeIn="00:00:00:00" TimeOut="00:00:10:00" FadeUpTime="00:00:00:00" FadeDownTime="00:00:00:00">
+<Text Valign="bottom" Vposition="20">Align bottom position 20%</Text>
+</Subtitle>
+<Subtitle SpotNumber="1" TimeIn="00:00:10:00" TimeOut="00:00:20:00" FadeUpTime="00:00:00:00" FadeDownTime="00:00:00:00">
+<Text Valign="bottom" Vposition="30">Align bottom position 30%</Text>
+</Subtitle>
+<Subtitle SpotNumber="1" TimeIn="00:00:20:00" TimeOut="00:00:30:00" FadeUpTime="00:00:00:00" FadeDownTime="00:00:00:00">
+<Text Valign="bottom" Vposition="40">Align bottom position 40%</Text>
+</Subtitle>
+</Font>
+</SubtitleList>
+</SubtitleReel>
\ No newline at end of file
diff --git a/hacks/subtitle_alignment/grid.png b/hacks/subtitle_alignment/grid.png
new file mode 100644
index 000000000..26987a076
--- /dev/null
+++ b/hacks/subtitle_alignment/grid.png
diff --git a/hacks/subtitle_alignment/grid.svg b/hacks/subtitle_alignment/grid.svg
new file mode 100644
index 000000000..cb3f99a37
--- /dev/null
+++ b/hacks/subtitle_alignment/grid.svg
@@ -0,0 +1,222 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="1998"
+   height="1080"
+   viewBox="0 0 1998.0001 1080"
+   id="svg2"
+   version="1.1"
+   inkscape:version="0.48.4 r9939"
+   sodipodi:docname="subtitle_alignment.svg"
+   inkscape:export-filename="/home/c.hetherington/src/dcpomatic2/hacks/subtitle_alignment.png"
+   inkscape:export-xdpi="90"
+   inkscape:export-ydpi="90">
+  <defs
+     id="defs4" />
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="0.5"
+     inkscape:cx="682.63128"
+     inkscape:cy="316.23406"
+     inkscape:document-units="px"
+     inkscape:current-layer="layer1"
+     showgrid="true"
+     units="px"
+     inkscape:window-width="1280"
+     inkscape:window-height="997"
+     inkscape:window-x="1280"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1">
+    <inkscape:grid
+       type="xygrid"
+       id="grid4157"
+       snapvisiblegridlinesonly="false"
+       spacingx="108.00001"
+       spacingy="108"
+       empspacing="5"
+       visible="true"
+       enabled="true" />
+  </sodipodi:namedview>
+  <metadata
+     id="metadata7">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1"
+     transform="translate(0,27.637571)">
+    <rect
+       style="color:#000000;clip-rule:nonzero;display:inline;overflow:visible;visibility:visible;opacity:1;isolation:auto;mix-blend-mode:normal;color-interpolation:sRGB;color-interpolation-filters:linearRGB;solid-color:#000000;solid-opacity:1;fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#ffffff;stroke-width:4.93631983;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1;color-rendering:auto;image-rendering:auto;shape-rendering:auto;text-rendering:auto;enable-background:accumulate"
+       id="rect4352"
+       width="2110.2124"
+       height="1178.5175"
+       x="-40.768791"
+       y="-58.703613" />
+    <path
+       style="fill:#0000ff;fill-rule:evenodd;stroke:#0000ff;stroke-width:4.00000048;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;fill-opacity:1"
+       d="m 0,80.362368 2052.0001,0"
+       id="path4159"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:#0000ff;fill-rule:evenodd;stroke:#0000ff;stroke-width:4.00000048;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;color:#000000;clip-rule:nonzero;display:inline;overflow:visible;visibility:visible;opacity:1;isolation:auto;mix-blend-mode:normal;color-interpolation:sRGB;color-interpolation-filters:linearRGB;solid-color:#000000;solid-opacity:1;fill-opacity:1;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;filter-blend-mode:normal;filter-gaussianBlur-deviation:0;color-rendering:auto;image-rendering:auto;shape-rendering:auto;text-rendering:auto;enable-background:accumulate"
+       d="m 0,188.36237 2052.0001,0"
+       id="path4176"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:#0000ff;fill-rule:evenodd;stroke:#0000ff;stroke-width:4.00000048;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;color:#000000;clip-rule:nonzero;display:inline;overflow:visible;visibility:visible;opacity:1;isolation:auto;mix-blend-mode:normal;color-interpolation:sRGB;color-interpolation-filters:linearRGB;solid-color:#000000;solid-opacity:1;fill-opacity:1;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;filter-blend-mode:normal;filter-gaussianBlur-deviation:0;color-rendering:auto;image-rendering:auto;shape-rendering:auto;text-rendering:auto;enable-background:accumulate"
+       d="m 0,296.36237 2052.0001,0"
+       id="path4178"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:#0000ff;fill-rule:evenodd;stroke:#0000ff;stroke-width:4.00000048;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;color:#000000;clip-rule:nonzero;display:inline;overflow:visible;visibility:visible;opacity:1;isolation:auto;mix-blend-mode:normal;color-interpolation:sRGB;color-interpolation-filters:linearRGB;solid-color:#000000;solid-opacity:1;fill-opacity:1;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;filter-blend-mode:normal;filter-gaussianBlur-deviation:0;color-rendering:auto;image-rendering:auto;shape-rendering:auto;text-rendering:auto;enable-background:accumulate"
+       d="m 0,404.36237 2052.0001,0"
+       id="path4180"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:#0000ff;fill-rule:evenodd;stroke:#0000ff;stroke-width:4.00000048;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;color:#000000;clip-rule:nonzero;display:inline;overflow:visible;visibility:visible;opacity:1;isolation:auto;mix-blend-mode:normal;color-interpolation:sRGB;color-interpolation-filters:linearRGB;solid-color:#000000;solid-opacity:1;fill-opacity:1;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;filter-blend-mode:normal;filter-gaussianBlur-deviation:0;color-rendering:auto;image-rendering:auto;shape-rendering:auto;text-rendering:auto;enable-background:accumulate"
+       d="m 0,512.36237 c 0,0 2052.0001,0 2052.0001,0"
+       id="path4182"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:#0000ff;fill-rule:evenodd;stroke:#0000ff;stroke-width:4.00000048;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;color:#000000;clip-rule:nonzero;display:inline;overflow:visible;visibility:visible;opacity:1;isolation:auto;mix-blend-mode:normal;color-interpolation:sRGB;color-interpolation-filters:linearRGB;solid-color:#000000;solid-opacity:1;fill-opacity:1;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;filter-blend-mode:normal;filter-gaussianBlur-deviation:0;color-rendering:auto;image-rendering:auto;shape-rendering:auto;text-rendering:auto;enable-background:accumulate"
+       d="m 0,620.36237 2052.0001,0"
+       id="path4184"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:#0000ff;fill-rule:evenodd;stroke:#0000ff;stroke-width:4.00000048;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;color:#000000;clip-rule:nonzero;display:inline;overflow:visible;visibility:visible;opacity:1;isolation:auto;mix-blend-mode:normal;color-interpolation:sRGB;color-interpolation-filters:linearRGB;solid-color:#000000;solid-opacity:1;fill-opacity:1;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;filter-blend-mode:normal;filter-gaussianBlur-deviation:0;color-rendering:auto;image-rendering:auto;shape-rendering:auto;text-rendering:auto;enable-background:accumulate"
+       d="m 0,728.36237 2052.0001,0"
+       id="path4186"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:#0000ff;fill-rule:evenodd;stroke:#0000ff;stroke-width:4.00000048;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;color:#000000;clip-rule:nonzero;display:inline;overflow:visible;visibility:visible;opacity:1;isolation:auto;mix-blend-mode:normal;color-interpolation:sRGB;color-interpolation-filters:linearRGB;solid-color:#000000;solid-opacity:1;fill-opacity:1;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;filter-blend-mode:normal;filter-gaussianBlur-deviation:0;color-rendering:auto;image-rendering:auto;shape-rendering:auto;text-rendering:auto;enable-background:accumulate"
+       d="M 2052.0001,836.36237 0,836.36237"
+       id="path4188"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:#0000ff;fill-rule:evenodd;stroke:#0000ff;stroke-width:4.00000048;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;color:#000000;clip-rule:nonzero;display:inline;overflow:visible;visibility:visible;opacity:1;isolation:auto;mix-blend-mode:normal;color-interpolation:sRGB;color-interpolation-filters:linearRGB;solid-color:#000000;solid-opacity:1;fill-opacity:1;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;filter-blend-mode:normal;filter-gaussianBlur-deviation:0;color-rendering:auto;image-rendering:auto;shape-rendering:auto;text-rendering:auto;enable-background:accumulate"
+       d="m 0,944.36237 2052.0001,0"
+       id="path4190"
+       inkscape:connector-curvature="0" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-weight:normal;font-size:40px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#0000ff;fill-opacity:1;stroke:#0000ff;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;"
+       x="230.66669"
+       y="66.844322"
+       id="text4241"
+       sodipodi:linespacing="125%"><tspan
+         sodipodi:role="line"
+         id="tspan4243"
+         x="230.66669"
+         y="66.844322">108px: 10%</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-weight:normal;font-size:40px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#0000ff;fill-opacity:1;stroke:#0000ff;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;"
+       x="232.13153"
+       y="174.88255"
+       id="text4241-7"
+       sodipodi:linespacing="125%"><tspan
+         sodipodi:role="line"
+         id="tspan4243-2"
+         x="232.13153"
+         y="174.88255">216px: 20%</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-weight:normal;font-size:40px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#0000ff;fill-opacity:1;stroke:#0000ff;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;"
+       x="232.01434"
+       y="282.92059"
+       id="text4241-7-4"
+       sodipodi:linespacing="125%"><tspan
+         sodipodi:role="line"
+         x="232.01434"
+         y="282.92059"
+         id="tspan4329">324px: 30%</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-weight:normal;font-size:40px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#0000ff;fill-opacity:1;stroke:#0000ff;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;"
+       x="233.10809"
+       y="390.95886"
+       id="text4241-7-8"
+       sodipodi:linespacing="125%"><tspan
+         sodipodi:role="line"
+         id="tspan4243-2-29"
+         x="233.10809"
+         y="390.95886">432px: 40%</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-weight:normal;font-size:40px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#0000ff;fill-opacity:1;stroke:#0000ff;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;"
+       x="231.97528"
+       y="498.99692"
+       id="text4241-7-2"
+       sodipodi:linespacing="125%"><tspan
+         sodipodi:role="line"
+         id="tspan4243-2-6"
+         x="231.97528"
+         y="498.99692">540px: 50%</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-weight:normal;font-size:40px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#0000ff;fill-opacity:1;stroke:#0000ff;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;"
+       x="232.26825"
+       y="607.03516"
+       id="text4241-7-5"
+       sodipodi:linespacing="125%"><tspan
+         sodipodi:role="line"
+         id="tspan4243-2-5"
+         x="232.26825"
+         y="607.03516">648px: 60%</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-weight:normal;font-size:40px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#0000ff;fill-opacity:1;stroke:#0000ff;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;"
+       x="231.77997"
+       y="715.0733"
+       id="text4241-7-85"
+       sodipodi:linespacing="125%"><tspan
+         sodipodi:role="line"
+         id="tspan4243-2-3"
+         x="231.77997"
+         y="715.0733">756px: 70%</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-weight:normal;font-size:40px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#0000ff;fill-opacity:1;stroke:#0000ff;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;"
+       x="232.34637"
+       y="823.11145"
+       id="text4241-7-1"
+       sodipodi:linespacing="125%"><tspan
+         sodipodi:role="line"
+         id="tspan4243-2-1"
+         x="232.34637"
+         y="823.11145">864px: 80%</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-weight:normal;font-size:40px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#0000ff;fill-opacity:1;stroke:#0000ff;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;"
+       x="232.54169"
+       y="931.1496"
+       id="text4241-7-12"
+       sodipodi:linespacing="125%"><tspan
+         sodipodi:role="line"
+         id="tspan4243-2-53"
+         x="232.54169"
+         y="931.1496">972px: 90%</tspan></text>
+  </g>
+</svg>