Den 03.11.2024 00:52, skrev Terje J. Hanssen:
Den 03.11.2024 00:09, skrev Andrew Randrianasulu:On Sat, Nov 2, 2024 at 8:15 PM Terje J. Hanssen via Cin <[email protected]> wrote:Den 01.11.2024 19:34, skrev Phyllis Smith:Terje, thank you for this comprehensive list of vaapi supported encodings. On Thu, Oct 31, 2024 at 5:38 PM Terje J. Hanssen via Cin <[email protected]> wrote: 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_vaapiIt was also interesting to standardize that the corresponding ffmpeg syntax above works for both vaapi/qsv and hevc/av1: - replace vaapi with qsv in 1) 2) and 3) above - and if applicable: replace hevc with av1 in 1) and 2) above The default bitrates used do vary a lot as seen on listed output file sizes: 19M cfhd01_hevc_qsv_format_nv12.mp4 92M cfhd01_hevc_vaapi_format_nv12.mp4 224M cfhd01_hevc_qsv_format_p010.mp4 90M cfhd01_hevc_vaapi_format_p010.mp4 270M cfhd01_hevc_qsv_format_y210.mp4 104M cfhd01_hevc_vaapi_format_y210.mp4 ---------------- 9,1M cfhd01_av1_qsv_format_nv12.mp4 102M cfhd01_av1_vaapi_format_nv12.mp4 9,1M cfhd01_av1_qsv_format_p010.mp4 110M cfhd01_av1_vaapi_format_p010.mp4yes, last four lines seem say that qsv and vaapi AV1 encoders use *wildly* different defaults for bitrate ....Yes, and it looks like especially av1_qsv is highly optimized, because it is not bad to look at. The 10x larger av1_vaapi is at bit sharper and smoother at pan/tilt movements (I used tripod for the original source camcording to a HDMI connected BD hyperdeck shuttle. Later I transcoded this test file to cfhd as intermediate format with ffmpeg). Another thing I mentioned in my first post here, is that the encoding speed in all these cases independent of bitrate, looks to be about the same 45-46 fpsI add here the ffprobe outputs to compare for the two latter lines: 9,1M cfhd01_av1_qsv_format_p010.mp4 ffprobe -hide_banner cfhd01_av1_qsv_format_p010.mp4 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'cfhd01_av1_qsv_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: 1062 kb/sStream #0:0[0x1](eng): Video: av1 (libdav1d) (Main) (av01 / 0x31307661), yuv420p10le(tv, bt709, progressive), 1920x1080, 1061 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_qsv ----------------- 110M cfhd01_av1_vaapi_format_p010.mp4 ffprobe -hide_banner cfhd01_av1_vaapi_format_p010.mp4Input #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/sStream #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
Some quality option notices from the ffmpeg encoding outputs: [hevc_vaapi@ 0x558fd14e9740] No quality level set; using default (25). [av1_vaapi @ 0x559d44056740] No quality level set; using default (25). -----------[hevc_qsv @ 0x55834b200500] Using the constant quantization parameter (CQP) by default. Please use the global_quality option and other options for a quality-based mode or the b option and other options for a bitrate-based mode if the default is not the desired choice.
[av1_qsv @ 0x558ed655f400] Using the constant quantization parameter (CQP) by default. Please use the global_quality option and other options for a quality-based mode or the b option and other options for a bitrate-based mode if the default is not the desired choice.
And by listing other related parameter options from the ffmpeg help:ffmpeg -hide_banner -h encoder=hevc_vaapi | egrep -i 'quality|global_quality|bitrate|profile|preset'
CQP 1 E..V....... Constant-quality CBR 2 E..V....... Constant-bitrate VBR 3 E..V....... Variable-bitrate ICQ 4 E..V....... Intelligent constant-qualityQVBR 5 E..V....... Quality-defined variable-bitrate
AVBR 6 E..V....... Average variable-bitrate-blbrc <boolean> E..V....... Block level based bitrate control (default false) -profile <int> E..V....... Set profile (general_profile_idc) (from -99 to 255) (default -99)
ffmpeg -hide_banner -h encoder=av1_vaapi | egrep -i 'quality|global_quality|bitrate|profile|preset'
CQP 1 E..V....... Constant-quality CBR 2 E..V....... Constant-bitrate VBR 3 E..V....... Variable-bitrate ICQ 4 E..V....... Intelligent constant-qualityQVBR 5 E..V....... Quality-defined variable-bitrate
AVBR 6 E..V....... Average variable-bitrate-blbrc <boolean> E..V....... Block level based bitrate control (default false) -profile <int> E..V....... Set profile (seq_profile) (from -99 to 255) (default -99)
--------------ffmpeg -hide_banner -h encoder=hevc_qsv | egrep -i 'quality|global_quality|bitrate|profile|preset'
-preset <int> E..V....... (from 0 to 7) (default 0)-mbbrc <int> E..V....... MB level bitrate control (from -1 to 1) (default -1) -extbrc <int> E..V....... Extended bitrate control (from -1 to 1) (default -1) -profile <int> E..V....... (from 0 to INT_MAX) (default unknown)
ffmpeg -hide_banner -h encoder=av1_qsv | egrep -i 'quality|global_quality|bitrate|profile|preset'
-preset <int> E..V....... (from 0 to 7) (default 0)-extbrc <int> E..V....... Extended bitrate control (from -1 to 1) (default -1) -profile <int> E..V....... (from 0 to INT_MAX) (default unknown)
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