[FFmpeg-trac] #1722(avformat:open): PGS subtitles vanish/disappear immediately in m2ts

[FFmpeg]

#1722: PGS subtitles vanish/disappear immediately in m2ts
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             Reporter:  skank       |                    Owner:
                 Type:  defect      |                   Status:  open
             Priority:  normal      |                Component:  avformat
              Version:  git-master  |               Resolution:
             Keywords:  pgssub      |               Blocked By:
             Blocking:              |  Reproduced by developer:  1
Analyzed by developer:  0           |
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Comment (by cehoyos):

 Replying to [comment:11 Cigaes]:
 > Can you try this patch series:
 > [http://ffmpeg.org/pipermail/ffmpeg-devel/2012-September/130738.html]
 > and see if it fixes things for you in the following situations:
 > * playback with ffplay;
 > * transcoding to a different sub codec (dvdsub; {{{-fix_sub_duration}}}
 is required, and {{{-s:s 1920x1080}}} also if the subtitles arrive too
 late);
 > * hardcoding the subtitles on the video.
 All three situations are fixed with your patchset (attached), both for the
 sample here in this ticket, and the sample from ticket #598 (that needs
 the CRC-check in pat_cb() disabled)!

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1722#comment:18>
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