New subtitle bug

Anything and everything to do with DCP-o-matic.
Anders M Olsson
Posts: 62
Joined: Thu Aug 04, 2016 12:24 pm

New subtitle bug

Post by Anders M Olsson »

In DOM version 2.9.37, when there's a line with a mixture of words in italics and regular font, the entire line is replicated three times.
As far as I can tell, it worked OK in version 2.9.30, so the bug must have crept up somewhere between those versions.

For example, this source:

-<dcst:Subtitle TimeOut="00:09:23:22" TimeIn="00:09:20:20" FadeDownTime="00:00:00:00" FadeUpTime="00:00:00:00" SpotNumber="144">
-<dcst:Text Direction="ltr" Halign="center" Valign="bottom" Vposition="10">
der
<dcst:Font Italic="yes">New York Times</dcst:Font>
landete.
</dcst:Text>
</dcst:Subtitle>

results in a burnt in subtitle like this:

Image
lemgeo
Posts: 53
Joined: Wed Sep 09, 2015 5:35 am

Re: New subtitle bug

Post by lemgeo »

Hi
I'm not sure if it's DoM's bug. it happend to me 2 days ago but i think it was my mistake.
two example's i've made today,
the first is with an srt source and the second with xml source
test1.GIF
test1.GIF (81.04 KiB) Viewed 14146 times
test2.GIF
test2.GIF (79.06 KiB) Viewed 14146 times
Anders M Olsson
Posts: 62
Joined: Thu Aug 04, 2016 12:24 pm

Re: New subtitle bug

Post by Anders M Olsson »

I don't know what kind of mistake would cause that kind of behaviour... ?!

Anyway, I tried reverting to version 2.9.30 and the problem immediately went away. I then re-installed 2.9.37 and the problem came back. So toggling back and forth between the versions makes it completely clear to me that it must be a bug in the later version.

I haven't downloaded and kept any versions between 2.9.30 and 2.9.37, so I can't tell exactly in which version the problem first appeared.
carl
Site Admin
Posts: 2338
Joined: Thu Nov 14, 2013 2:53 pm

Re: New subtitle bug

Post by carl »

Hi Anders,
Thanks for looking into this. It should be fixed in 2.9.38; let me know if you have problems with that version.
Anders M Olsson
Posts: 62
Joined: Thu Aug 04, 2016 12:24 pm

Re: New subtitle bug

Post by Anders M Olsson »

Yes, a quick test indicates that the problem has indeed been solved in version 2.9.38 !
Anders M Olsson
Posts: 62
Joined: Thu Aug 04, 2016 12:24 pm

Re: New subtitle bug

Post by Anders M Olsson »

Sorry to disturb again, but the case where regular and italic fonts are mixed on the same line seems to be almost impossible to get right.

Same subtitle source as before, but this time soft = NOT burnt in. DOM version is 2.9.38 and playback is by Easy DCP player version 3.4.5.

Image

Lots of unwanted space between words!
carl
Site Admin
Posts: 2338
Joined: Thu Nov 14, 2013 2:53 pm

Re: New subtitle bug

Post by carl »

Can you share the input file for these subs?
Anders M Olsson
Posts: 62
Joined: Thu Aug 04, 2016 12:24 pm

Re: New subtitle bug

Post by Anders M Olsson »

I've made a very small test project that I can share, and which will illustrate the problem:

First, I made a very simple subtitle file consisting of only one item:

1
00:00:01,000 --> 00:00:09,000
Testing is <i>really</i> fun!
This is the <i>second</i> line!

Then, I read that .srt-file into Subtitle Edit, and saved it as D-cinema SMPTE 2010. This is the result:

<?xml version="1.0" encoding="UTF-8"?>
<dcst:SubtitleReel xmlns:dcst="http://www.smpte-ra.org/schemas/428-7/2010/DCST" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<dcst:Id>urn:uuid:8cf3bad5-812c-4371-a825-67cf9ba79db6</dcst:Id>
<dcst:ContentTitleText>Test film</dcst:ContentTitleText>
<dcst:AnnotationText>This is a subtitle file</dcst:AnnotationText>
<dcst:IssueDate>2016-08-29T10:42:26.000-00:00</dcst:IssueDate>
<dcst:ReelNumber>1</dcst:ReelNumber>
<dcst:Language>en</dcst:Language>
<dcst:EditRate>24 1</dcst:EditRate>
<dcst:TimeCodeRate>24</dcst:TimeCodeRate>
<dcst:StartTime>00:00:00:00</dcst:StartTime>
<dcst:LoadFont ID="Arial Rounded MT">urn:uuid:3dec6dc0-39d0-498d-97d0-928d2eb78391</dcst:LoadFont>
<dcst:SubtitleList>
<dcst:Font ID="Arial Rounded MT" Size="35" Weight="normal" Color="FFFFFFFF" Effect="border" EffectColor="FF000000">
<dcst:Subtitle SpotNumber="1" FadeUpTime="00:00:00:00" FadeDownTime="00:00:00:00" TimeIn="00:00:01:00" TimeOut="00:00:09:00">
<dcst:Text Vposition="15" Valign="bottom" Halign="center" Direction="ltr">Testing is <dcst:Font Italic="yes">really</dcst:Font> fun!</dcst:Text>
<dcst:Text Vposition="10" Valign="bottom" Halign="center" Direction="ltr">This is the <dcst:Font Italic="yes">second</dcst:Font> line!</dcst:Text>
</dcst:Subtitle>
</dcst:Font>
</dcst:SubtitleList>
</dcst:SubtitleReel>

I now made a very simple project in DOM, only overlaying this single subtitle on a still image (some colour bars). It looks absolutely OK in the preview. I UNchecked the "Burn Subtitles into Image" option to get a DCP with soft subtitles.

Playing back the DCP in Easy DCP Player gives the following result:

Image

Do you need any more information, Carl?
carl
Site Admin
Posts: 2338
Joined: Thu Nov 14, 2013 2:53 pm

Re: New subtitle bug

Post by carl »

Thanks. DoM does not really change that input subtitle much in the output; the interesting part is:

Code: Select all

     
     <Text VAlign="bottom" VPosition="10">
        <Font Italic="no">This is the </Font>
        <Font Italic="yes">second</Font>
        <Font Italic="no"> line!</Font>
      </Text>
      <Text VAlign="bottom" VPosition="15">
        <Font Italic="no">Testing is </Font>
        <Font Italic="yes">really</Font>
        <Font Italic="no"> fun!</Font>
      </Text>
      
That rendering just looks wrong to me... can anybody check a file like this on a projector?
Anders M Olsson
Posts: 62
Joined: Thu Aug 04, 2016 12:24 pm

Re: New subtitle bug

Post by Anders M Olsson »

Well, dumping out the relevant part of the .mxf-file gives the following result, except that I have replaced all the spaces with "@"-characters to make them stand out.

My guess is that any spaces present between <dcst:Text> and </dcst:Text> are significant and will be rendered by the player. No matter if they are enclosed by Font-tags or not...

<dcst:Text@Valign="bottom"@Vposition="10">
@@@@@@@@@@<dcst:Font@Italic="no">This@is@the@</dcst:Font>
@@@@@@@@@@<dcst:Font@Italic="yes">second</dcst:Font>
@@@@@@@@@@<dcst:Font@Italic="no">@line!</dcst:Font>
@@@@@@@@</dcst:Text>
@@@@@@@@<dcst:Text@Valign="bottom"@Vposition="15">
@@@@@@@@@@<dcst:Font@Italic="no">Testing@is@</dcst:Font>
@@@@@@@@@@<dcst:Font@Italic="yes">really</dcst:Font>
@@@@@@@@@@<dcst:Font@Italic="no">@fun!</dcst:Font>
@@@@@@@@</dcst:Text>
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