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_vaapi >> >> >> > > It 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.mp4 > > > yes, last four lines seem say that qsv and vaapi AV1 encoders use * wildly* different defaults for bitrate .... > > > > -- > Cin mailing list > [email protected] > https://lists.cinelerra-gg.org/mailman/listinfo/cin >
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