[FFmpeg-trac] #10963(undetermined:new): VP9 hardware decoding very slow on Apple Silicon

[FFmpeg]

#10963: VP9 hardware decoding very slow on Apple Silicon
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             Reporter:  low-batt     |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |
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Comment (by Tschuuuls):

 This is also broken on M1 Pro, playing at 0.566x.
 Safari doesn't have problems playing the same file at 2x speed without
 dropping frames. I think it uses Core Media (AVDFrameReceiver and
 com.apple.coremedia.videomediaconverter) instead of Video Toolbox to HW
 Decode the video.

 Safari also plays the "Peru 8K HDR 60FPS (FUHD)._original.webm" file at
 <30% CPU load as reported by Activity Monitor while ffmpeg uses >40% in
 the benchmark while only managing 0.566x speed.

 Maybe someone from the ffmpeg team should look into this and report it to
 Apple?
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Ticket URL: <https://trac.ffmpeg.org/ticket/10963#comment:4>
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