[Cin] 10bit av1 and h264 QSV and VAAPI encoding

[Terje J. Hanssen]

Now when 10bit hevc_qsv and hevc_vaapi accelerated encoding looks to be 
in box, I wonder if something prohibits us to get accelerated encoding 
for av1 and h264?

According to ffmpeg help the following support should be available:

av1_qsv
     Supported pixel formats: nv12 p010le qsv
   -profile           <int>        E..V....... (from 0 to INT_MAX) 
(default unknown)
      unknown         0            E..V.......
      main            1            E..V.......

av1_vaapi
     Supported pixel formats: vaapi
   -profile           <int>        E..V....... Set profile (seq_profile) 
(from -99 to 255) (default -99)
      main            0            E..V.......
      high            1            E..V.......
      professional    2            E..V.......


h264_qsv
     Supported pixel formats: nv12 qsv
   -profile           <int>        E..V....... (from 0 to INT_MAX) 
(default unknown)
      unknown         0            E..V.......
      baseline        66           E..V.......
      main            77           E..V.......
      high            100          E..V.......


h264_vaapi
     Supported pixel formats: vaapi
   -profile           <int>        E..V....... Set profile (profile_idc 
and constraint_set*_flag) (from -99 to 65535) (default -99)
      constrained_baseline 578          E..V.......
      main            77           E..V.......
      high            100          E..V.......
      high10          110          E..V.......

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