[FFmpeg-trac] #8844(avformat:open): DVB subtitles don't work without PCR any more

[FFmpeg]

#8844: DVB subtitles don't work without PCR any more
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             Reporter:  mkver        |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  important    |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  mpegts       |               Blocked By:
  regression                         |
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  1            |
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Comment (by JEEB):

 If the unsetting of timestamps was not a Bad Thing for DVB subtitles, and
 if FFmpeg waited until it has PAT & PMT as it gets to this point, it could
 check if this stream is the only one to be parsed from the input stream
 and the current stream is not the advertised PCR PID.

 In such case timestamp unsetting could be disabled since there would
 (likely?) never be any PCR parsed. Just not sure how simple and/or
 possible such check would be.

 Granted, since unsetting timestamps indeed is a Bad Thing for DVB
 subtitles, this nuance gets lost with it :P

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Ticket URL: <https://trac.ffmpeg.org/ticket/8844#comment:5>
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