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

[FFmpeg]

#3491: MKV muxer corrupts subtitles
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             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
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Comment (by Cigaes):

 That happens because, by default, the Matroska demuxer uses some legacy
 format for demuxed ASS packets.
 You can get it to use the newer format, and thus preserve the read order,
 by adding {{{-c:s ass}}} as input option.

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Ticket URL: <https://trac.ffmpeg.org/ticket/3491#comment:6>
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