In hope it may be of some use for Cingg next, I make a
summary and supplement to the guide in
https://trac.ffmpeg.org/wiki/Hardware/VAAPI#Encoding
And instead of adding a tail to already too long recent
threads, I start a new thread here.
Two additional
references are used
Developer Reference: Media Capabilities Supported by Intel
Hardware
https://www.intel.com/content/www/us/en/docs/onevpl/developer-reference-media-intel-hardware/1-1/features-and-formats.html
Supported Encoding Input Format and Max Resolution
https://github.com/intel/media-driver/blob/master/docs/media_features.md#supported-encoding-input-format-and-max-resolution
to clarify the Encode Features for my own Intel Arc
A-series Discrete Graphics
HEVC (fixed-function hardware + shader-based)
8-bit, 4:2:0 (NV12)
10-bit, 4:2:0 (P010)
8-bit, 4:2:2 (YUY2, Windows only)
10-bit, 4:2:2 (Y210)
AV1
8-bit, 4:2:0 (NV12)
10-bit, 4:2:0 (P010)
A short reminder:
8-bit vs 10-bit color depths is 256 vs 1024 color levels
of each RGB color, or 16.7 mill. vs 1.0 bill colors.
4:2:0 vs 4:2:2 color sub-sampling is keeping 1/4 vs 1/2 of
all 4:4:4 colors or the precision of color compression.
https://fujifilm-x.com/en-us/series/the-filmmakers-handbook/8-bit-or-10-bit-video-color-explained/
An important point to notice is that the VAAPI encoding
'formats' are based on those in the parentheses () above.
Three simplified ffmpeg code lines with default bit-rates
and without audio are used in the following three
examples.
Resulting fps encoding counts or speeds are the same in
all cases; I don't know why.
The input file used:
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
1)
8-bit yuv420p hevc vaapi encoding using -vf
'format=nv12,hwupload'
------------------------------------------------------------------
ffmpeg -hide_banner -vaapi_device /dev/dri/renderD128 -i
cfhd01.mkv -vf 'format=nv12,hwupload' -c:v av1_vaapi
cfhd01_av1_vaapi_format_nv12.mp4
............
frame= 1781 fps= 46 q=-0.0 Lsize= 104132KiB
time=00:01:11.24 bitrate=11974.3kbits/s speed=1.83x
ffprobe -hide_banner cfhd01_av1_vaapi_format_nv12.mp4
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
'cfhd01_av1_vaapi_format_nv12.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomav01iso2mp41
encoder : Lavf61.7.100
Duration: 00:01:11.24, start: 0.000000, bitrate: 11974
kb/s
Stream #0:0[0x1](eng): Video: av1 (libdav1d) (Main)
(av01 / 0x31307661), yuv420p(tv, bt709, progressive),
1920x1080, 11973 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr,
12800 tbn (default)
Metadata:
handler_name : Apple Video Media Handler
vendor_id : [0][0][0][0]
encoder : Lavc61.19.100 av1_vaapi
2)
10-bit yuv420p10le hevc vaapi encoding using -vf
'format=p010,hwupload'
-----------------------------------------------------------------------
ffmpeg -hide_banner -vaapi_device /dev/dri/renderD128 -i
cfhd01.mkv -vf 'format=p010,hwupload' -c:v av1_vaapi
cfhd01_av1_vaapi_format_p010.mp4
.............
frame= 1781 fps= 46 q=-0.0 Lsize= 111924KiB
time=00:01:11.24 bitrate=12870.3kbits/s speed=1.82x
ffprobe -hide_banner cfhd01_av1_vaapi_format_p010.mp4
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
'cfhd01_av1_vaapi_format_p010.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomav01iso2mp41
encoder : Lavf61.7.100
Duration: 00:01:11.24, start: 0.000000, bitrate: 12870
kb/s
Stream #0:0[0x1](eng): Video: av1 (libdav1d) (Main)
(av01 / 0x31307661), yuv420p10le(tv, bt709, progressive),
1920x1080, 12869 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr,
12800 tbn (default)
Metadata:
handler_name : Apple Video Media Handler
vendor_id : [0][0][0][0]
encoder : Lavc61.19.100 av1_vaapi
3)
10-bit yuv422p10le hevc_vaapi encoding using -vf
'format=y210,hwupload'
-----------------------------------------------------------------------
ffmpeg -hide_banner -vaapi_device /dev/dri/renderD128 -i
cfhd01.mkv -vf 'format=y210,hwupload' -c:v hevc_vaapi
cfhd01_hevc_vaapi_format_y210.mp4
frame= 1781 fps= 46 q=-0.0 Lsize= 105482KiB
time=00:01:11.20 bitrate=12136.3kbits/s speed=1.83x
ffprobe -hide_banner cfhd01_hevc_vaapi_format_y210.mp4
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
'cfhd01_hevc_vaapi_format_y210.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2mp41
encoder : Lavf61.7.100
Duration: 00:01:11.24, start: 0.000000, bitrate: 12129
kb/s
Stream #0:0[0x1](eng): Video: hevc (Rext) (hev1 /
0x31766568), yuv422p10le(tv, bt709, progressive),
1920x1080 [SAR 1:1 DAR 16:9], 12127 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_vaapi