Den 26.10.2024 02:12, skrev Andrew Randrianasulu:


сб, 26 окт. 2024 г., 03:06 Terje J. Hanssen via Cin <cin@lists.cinelerra-gg.org>:
  An overview over the system FFmpeg 7.1 supported QSV pixel formats and profiles:


ffmpeg -hide_banner -encoders | grep qsv
 V..... av1_qsv              AV1 (Intel Quick Sync Video acceleration) (codec av1)
 V..... h264_qsv             H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (Intel Quick Sync Video acceleration) (codec h264)
 V..... hevc_qsv             HEVC (Intel Quick Sync Video acceleration) (codec hevc)
 V..... mjpeg_qsv            MJPEG (Intel Quick Sync Video acceleration) (codec mjpeg)
 V..... mpeg2_qsv            MPEG-2 video (Intel Quick Sync Video acceleration) (codec mpeg2video)
 V..... vp9_qsv              VP9 video (Intel Quick Sync Video acceleration) (codec vp9)


ffmpeg -hide_banner -h encoder=av1_qsv | egrep 'Supported|profile|main|high|professional'
    Supported hardware devices: qsv qsv qsv
    Supported pixel formats: nv12 p010le qsv
  -profile           <int>        E..V....... (from 0 to INT_MAX) (default unknown)
     main            1            E..V.......


ffmpeg -hide_banner -h encoder=hevc_qsv | egrep 'Supported|profile|main|high|professional'
    Supported hardware devices: qsv qsv qsv
    Supported pixel formats: nv12 p010le p012le yuyv422 y210le qsv bgra x2rgb10le vuyx xv30le
  -profile           <int>        E..V....... (from 0 to INT_MAX) (default unknown)
     main            1            E..V.......
     main10          2            E..V.......
     mainsp          3            E..V.......
  -tier              <int>        E..V....... Set the encoding tier (only level >= 4 can support high tier) (from 0 to 256) (default high)
     main            0            E..V.......
     high            256          E..V.......


ffmpeg -hide_banner -h encoder=h264_qsv | egrep 'Supported|profile|main|high|professional'
    Supported hardware devices: qsv qsv qsv
    Supported pixel formats: nv12 qsv
  -profile           <int>        E..V....... (from 0 to INT_MAX) (default unknown)
     main            77           E..V.......
     high            100          E..V.......


from this we can conclude av1/hevc should have 10bit option  ...

probably writing down numerical values for profiles (high, main...) for each codec is also good idea.


A reference and overview table for QSV capabilties for each iGPU and dGPU generation is here
https://en.wikipedia.org/wiki/Intel_Quick_Sync_Video#Hardware_decoding_and_encoding

And finally, after much trying and failing, I was able to prove that true 10bit 422 color depth hevc_qsv encoding is possible with my system ffmpeg 7.1
.
While pixel format p010le results in "just" 10bit yuv420p, the clue is to to use either (trying this for av1_qsv, auto- switch to 8bit nv12):
-pix_fmt y210le
or
-v format=yuv422p010le
Code example:

ffmpeg -hide_banner -hwaccel_output_format qsv -i cfhd01.mkv -c:v hevc_qsv -pix_fmt y210le cfhd01_hevc_qsv_pxfmt_y210le.mp4

Input file:

ffprobe -hide_banner cfhd01.mkv
Input #0, matroska,webm, from 'cfhd01.mkv':
  Metadata:
    ENCODER         : Lavf61.1.100
  Duration: 00:01:11.24, start: 0.000000, bitrate: 393480 kb/s
  Stream #0:0(eng): Video: cfhd (CFHD / 0x44484643), yuv422p10le(tv, bt709, top coded first (swapped)), 1920x1080, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 1k tbn (default)
      Metadata:
        HANDLER_NAME    : Apple Video Media Handler
        VENDOR_ID       : appl
        ENCODER         : Lavc61.3.100 cfhd
        DURATION        : 00:01:11.240000000

Output file:

ffprobe -hide_banner cfhd01_hevc_qsv_pxfmt_y210le.mp4
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'cfhd01_hevc_qsv_pxfmt_y210le.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2mp41
    encoder         : Lavf61.7.100
  Duration: 00:01:11.24, start: 0.000000, bitrate: 31770 kb/s
  Stream #0:0[0x1](eng): Video: hevc (Rext) (hev1 / 0x31766568), yuv422p10le(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 31767 kb/s, 25 fps, 25 tbr, 12800 tbn (default)
      Metadata:
        handler_name    : Apple Video Media Handler
        vendor_id       : [0][0][0][0]
        encoder         : Lavc61.19.100 hevc_qsv