[FFmpeg-trac] #8343(avcodec:open): h261dec doesn't mark keyframes

[FFmpeg]

#8343: h261dec doesn't mark keyframes
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             Reporter:  Lastique     |                    Owner:  (none)
                 Type:  enhancement  |                   Status:  open
             Priority:  wish         |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  h261         |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Balling):

 I have a concern here from the code
 02b7c630875c0bc63cee5ec597aa33baf9bf4e20

 They say that they mark all I frames as key frames, even those that start
 the GOP. Is it possible in ancient H261 for such a frame to not bey a key
 frame?
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Ticket URL: <https://trac.ffmpeg.org/ticket/8343#comment:6>
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