[FFmpeg-trac] #9546(undetermined:new): Videotoolbox Proces and VP9 does not work

[FFmpeg]

#9546: Videotoolbox Proces and VP9 does not work
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             Reporter:  Atarikid     |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Atarikid):

 Looking at the compile log it should enabled both:

 Enabled hwaccels:
 h263_videotoolbox       mpeg1_videotoolbox      prores_videotoolbox
 h264_videotoolbox       mpeg2_videotoolbox      vp9_videotoolbox
 hevc_videotoolbox       mpeg4_videotoolbox


 But prores_videotoolbox and vp9_videotoolbox are not working (not
 available).
 But it should on a Apple M1 Pro (and Max).

 I guess FFmpeg does not check correctly if the hardware has support for it
 or not.
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Ticket URL: <https://trac.ffmpeg.org/ticket/9546#comment:1>
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