[FFmpeg-trac] #11055(avcodec:reopened): OGOP (Open GOP) in certain conditions may cause missing frames of decoding

[FFmpeg]

#11055: OGOP (Open GOP) in certain conditions may cause missing frames of decoding
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             Reporter:  markfilipak  |                    Owner:  (none)
                 Type:  defect       |                   Status:  reopened
             Priority:  normal       |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  everything   |               Blocked By:
  OGOP                               |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Balling):

 Typically the first couple B-frames reference frames from the previous
 GOP. But it can be so much more conplex in B pyramid cases.

 Let's assume your GOP in storage order is: | non-IDR | B | B | P | ... | -
 you would have to discard the two B-frames since they likely reference
 something prior to the non-IDR but the rest should be decode-able.
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Ticket URL: <https://trac.ffmpeg.org/ticket/11055#comment:208>
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