[FFmpeg-trac] #5825(avcodec:closed): Vobsub subtitles won't overlay with some MKV

[FFmpeg]

#5825: Vobsub subtitles won't overlay with some MKV
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             Reporter:  edumj        |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  important    |                Component:  avcodec
              Version:  git-master   |               Resolution:  fixed
             Keywords:  dvdsub       |               Blocked By:
  regression                         |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |
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Comment (by richardpl):

 For burning subtitle you first need to scale subtitle stream to size of
 video stream, see scale2ref filter.

 xsub issue is probably related to #3247.

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Ticket URL: <https://trac.ffmpeg.org/ticket/5825#comment:15>
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