[FFmpeg-trac] #3491(undetermined:new): MKV muxer corrupts subtitles

FFmpeg trac at avcodec.org
Sun Mar 23 20:01:55 CET 2014

#3491: MKV muxer corrupts subtitles
             Reporter:  ValdikSS     |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0

Comment (by gjdfgh):

 Actually, I was wrong.

 The matroska file contains bogus packets with duplicate ReadOrder values.

 The ffmpeg produced mkv files are thus 100% broken.

 With mpv, it actually works with --demuxer=lavf, because that uses the old
 way to demux Matroska ASS packets, which "happens" to work (I can explain
 details). MPlayer works because it uses the libavformat demuxer.

 What Cigaes said probably applies here.

Ticket URL: <https://trac.ffmpeg.org/ticket/3491#comment:8>
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