[Cin] VAAPI supported Encoding formats

Fri Nov 1 00:38:12 CET 2024

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

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