[FFmpeg-trac] #1029(undetermined:open): first keyframe is missed in h264 mpegts stream

FFmpeg trac at avcodec.org
Thu Jul 26 15:50:04 CEST 2012

#1029: first keyframe is missed in h264 mpegts stream
             Reporter:  DonMoir      |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:  mpegts h264  |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  1

Comment (by DonMoir):

 Thanks for getting this opened Carl. This file represents the most in the
 way of playback / seek problems I see currently. Still, it is just a few
 mpegts-h264 files that are this bad, but there are indications that all
 mpegts-h264 have a problem when seeking. In most cases this is very minor
 and barely noticeable.

 If it can be found why the first frames are skipped, it may lead to
 reasons why seeking can also be bad for mpegts-h264 files. It is likely
 that seek problems are related to the way key entries are being managed.

 Again, apparently the mpegts_problem_file.ts file is not a bad file, but
 various players have problems with it. ffdshow in WMP got it perfect.

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1029#comment:4>
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