[FFmpeg-trac] #6755(avcodec:new): corrupt output and rate control issues when using vp9_vaapi encoder in CBR or VBR mode

[FFmpeg]

#6755: corrupt output and rate control issues when using vp9_vaapi encoder in CBR
or VBR mode
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             Reporter:  armena      |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:  vaapi       |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by jkqxz):

 I can't reproduce this myself with the command-line given (I might be able
 to with the initial part of the input file?), but I can certainly believe
 this sort of problem will happen.  The opaque rate control for VP9 in the
 Intel driver seems to be generally a bit flaky - e.g. see
 <https://github.com/01org/intel-vaapi-driver/issues/87> (not just the
 hang, you can also get broken output without other failure with that
 setup).  I suggest reporting your case there; ideally remove as many of
 the options as you can to still get it.

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Ticket URL: <https://trac.ffmpeg.org/ticket/6755#comment:3>
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