Den 26.10.2024 02:12, skrev Andrew
Randrianasulu:
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