[FFmpeg-trac] #5423(avformat:new): Wrong duration_ts from mpeg-ts file by avformat_find_stream_info()

[FFmpeg]

#5423: Wrong duration_ts from mpeg-ts file by avformat_find_stream_info()
-------------------------------------+-------------------------------------
             Reporter:               |                    Owner:
  Aleksandr_Slobodeniuk              |                   Status:  new
                 Type:  defect       |                Component:  avformat
             Priority:  normal       |               Resolution:
              Version:  git-master   |               Blocked By:
             Keywords:  mpegts h264  |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
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Comment (by Aleksandr_Slobodeniuk):

 Invented some "regular" solution for this problem, but it doesn't look
 like very good too.

 reordered frame can be detected like this:
 {{{
 duration = pkt->pts + pkt->duration;
 if (duration < previous duration)
 {
     we met I or P frame before.
 }
 else
 {
     we didn't meet I or P frame before, so we probably should
     increment duration on one frame in the end, or maybe read some mem
 before.
 }

 }}}


 But what if there's a row of b-frames in the end, that are referenced only
 backward..

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Ticket URL: <https://trac.ffmpeg.org/ticket/5423#comment:4>
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