[FFmpeg-trac] #502(undetermined:reopened): Jumping frames when copying video of an h264 file

FFmpeg trac at avcodec.org
Sun Oct 9 14:42:50 CEST 2011


#502: Jumping frames when copying video of an h264 file
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             Reporter:  Alex__       |                    Owner:
                 Type:  defect       |                   Status:  reopened
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by reimar):

 I am not entirely sure, and the "[ipod @ 0x7ff8f32d1c00] pts has no value"
 is suspicious, however if only QuickTime has issues it might just be a
 QuickTime bug.
 It certainly does mean that most developers will not be able to reproduce
 it. So you'll have to explain what "jumping" exactly means.
 If it means that it plays at irregular speed, that might be something
 wrong in FFmpeg, if however it means the frames play out of order or
 decode completely wrong that is most likely a bug in the QuickTime H.264
 decoder and you'll just have to re-encode. In that case you should be able
 to also see the issue when playing the AVI file (I think there are plugins
 that should allow playing it directly in QuickTime).
 I'd like to ask developers to avoid changing bug state without writing a
 few words though.

-- 
Ticket URL: <https://avcodec.org/trac/ffmpeg/ticket/502#comment:6>
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