[FFmpeg-trac] #5309(undetermined:new): Seek doesn't work in some .mp4 files

[FFmpeg]

#5309: Seek doesn't work in some .mp4 files
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             Reporter:  Arnaud       |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:  h264 mov     |               Resolution:
  seek                               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Arnaud):

 Oh, OK.
 Indeed that seems to be the problem in my initial file: only one IDR
 frame.
 Then I guess this bug can be closed, because there isn't much to fix on
 ffmpeg library or on ffplay about it, don't you think?

 If I'm right VLC uses ffmpeg, and I noticed it is able to seek this file,
 but it seems like it reads all the frames from the IDR frame to achieve
 this.
 So I guess it's up to applications to implement such behavior on top of
 ffmpeg's seek if not enough IDR frames are present.

 Thanks a lot for your help :)

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Ticket URL: <https://trac.ffmpeg.org/ticket/5309#comment:13>
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