[FFmpeg-trac] #7706(avcodec:open): 20-30% perf drop in FFmpeg (H264) transcode performance with VAAPI

[FFmpeg]

#7706: 20-30% perf drop in FFmpeg (H264) transcode performance with VAAPI
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             Reporter:  eero-t       |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  important    |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  vaapi        |               Blocked By:
  regression                         |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by eero-t):

 Replying to [comment:4 eero-t]:
 > Guilty commit is not codec specific, so it's likely to regress VAAPI
 encoding perf also with other codecs than H264.

 Ticket #7797 could also be due to this regression, as there has been no
 improvement to VA-API performance since this regression in January (except
 from drm-tip kernel v4.20 -> 5.0 upgrade).

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Ticket URL: <https://trac.ffmpeg.org/ticket/7706#comment:5>
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