[FFmpeg-trac] #862(avformat:new): Corrupted subtitles exported from matroska file.

[FFmpeg]

#862: Corrupted subtitles exported from matroska file.
-------------------------------------+-------------------------------------
             Reporter:               |                     Type:  defect
  vlada.matena                       |                 Priority:  normal
               Status:  new          |                  Version:  git-
            Component:  avformat     |  master
             Keywords:  srt          |               Blocked By:
  matroska mkv                       |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
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 I am trying to extract subtitles from matroska file to the SubRip file. I
 think the following command should extract subtitles from source.mkv, but
 target.srt is created empty.
 {{{
 ffmpeg -scodec srt -i source.mkv target.srt
 }}}

 I also tried using -scodec copy, but it only stores subtitle text in
 target.srt and the timecodes are missing. It looks like matroska decoder
 is not adding timecodes stored in matroska blocks back to subtitles.

 I implemented a function matroska_fix_srt_packet similar to
 matroska_fix_ass_packet and added it to libavformat/matroskadec.c . The
 changes are in attached patch.

 With the patch the command produces the desired output.

 I am sorry if I just didn't understand ffmpeg params and the changes are
 actually not needed.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/862>
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