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

FFmpeg trac at avcodec.org
Fri Feb 1 10:54:54 EET 2019


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

Comment (by eero-t):

 VAAPI transcode performance is now slower than with QSV, whereas it
 earlier was in most cases faster (at least for H264, on Intel).

 Guilty commit is not codec specific, so it's likely to regress VAAPI
 encoding perf also with other codecs than H264.

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Ticket URL: <https://trac.ffmpeg.org/ticket/7706#comment:4>
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