[Cin] ffmpeg -hwaccel AV1 QSV encoding on Arc GPU executes rapid, but commands?
Andrew Randrianasulu
randrianasulu at gmail.com
Thu Jun 20 00:13:03 CEST 2024
чт, 20 июн. 2024 г., 01:02 Terje J. Hanssen <terjejhanssen at gmail.com>:
>
>
> On 6/19/24 02:44, Andrew Randrianasulu wrote:
>
> ------------ skip
>
>>
>> -------------
>>
>> In short, I have tested the same SD-DV 576i and HDV 1080i video files as
>> with SVT-AV1 (CPU based) in another resent post.
>>
>> ffmpeg -hide_banner -hwaccel qsv -qsv_device /dev/dri/renderD128 -i
>> dv01_07.dv -c:v av1_qsv -preset 4 dv01_07_av1_qsv_pr4.webm
>> frame= 2832 fps=2106 q=-0.0 Lsize= 10554KiB time=00:01:53.24 bitrate=
>> 763.5kbits/s speed=84.2x
>>
>> fmpeg -hide_banner -hwaccel qsv -qsv_device /dev/dri/renderD128 -i
>> hdv09_04.m2t -c:v av1_qsv -preset 4 hdv09_04.m2t_av1_qsv_pr4.webm
>> frame= 5913 fps=700 q=-0.0 Lsize= 48022KiB time=00:03:58.77
>> bitrate=1647.6kbits/s dup=0 drop=4 speed=28.3x
>>
>> ....skip
>>
>
> A warning output in both command lines is:
>>
>> [vist#0:0/dvvideo @ 0x556a3f679100] WARNING: defaulting
>> hwaccel_output_format to qsv for compatibility with old commandlines. This
>> behaviour is DEPRECATED and will be removed in the future. Please
>> explicitly set "-hwaccel_output_format qsv".
>>
>> I tried to add this without success, so suggestion is welcome !?
>>
>
> I got this succesful now and avoided this warning, see command lines below
>
>
>>
>> And possibly suggestions regarding the more seriously errors "Cannot
>> allocate memory" that arised from the second command transcoding the hdv
>> file?
>>
>
>
> well, you tried to add -extra_hw_frames 16 for example to your ffmpeg
> line? I think mpeg2 is not most popular input codec nowadays ....
>
>
> Yes, thank you. This worked, see below (not unlike previous extending the
> bufsize for transcoding to mpg(2) for DVD)
>
>
> .I attach also the "complete" ffmpeg output FWIW for both files, though
> skipping repeated error lines:
>
>>
>> ffmpeg -hide_banner -hwaccel qsv -qsv_device /dev/dri/renderD128 -i
>> dv01_07.dv -c:v av1_qsv -preset 4 dv01_07_av1_qsv_pr4.webm
>> ........skip
>>
>>
> frame= 2832 fps=2106 q=-0.0 Lsize= 10554KiB time=00:01:53.24 bitrate=
>> 763.5kbits/s speed=84.2x
>>
>> bitrate= 763.5kbits/s
>
> sounds a bit low even for av1, so may be try to set -b to some higher
> value as suggested?
>
>
> As suggested where? bitrate= 763.5kbits/s was for SD-DV which was
> viewable and not quite bad in my eyes.
>
guess my guess was outdated (based on xvid days?)
sorry!
>
>
> ====
>
> av1_qsv @ 0x556a3f653040] 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.
> ====
>
>
>
>
> To make a direct speed performance comparison between this GPU -Hwaccel
> AV1_QSV encoding and my previou CPU based SVT-AV1 encoding, I have used the
> same ffmpeg command line parameters and preset 4, and iterated similar
> bitrate and file size as follows:
>
> SD-DV -> AV1
> ------------
>
> SVT-AV1:
> ffmpeg -hide_banner -i dv01_07.dv -c:v libsvtav1 -preset 4 -crf 35 -c:a
> libvorbis dv01_07_svt-av1_pr4.webm
> frame= 2832 fps= 50 q=35.0 Lsize= 24159KiB time=00:01:53.24
> bitrate=1747.7kbits/s speed= 2x
>
> AV1_QSV:
> ffmpeg -hide_banner -hwaccel_output_format qsv -qsv_device
> /dev/dri/renderD128 -i dv01_07.dv -c:v av1_qsv -preset 4 -b:v 1570k -crf 35
> -c:a libvorbis dv01_07_av1_qsv_pr4_b1570k.webm
> frame= 2832 fps=1891 q=-0.0 Lsize= 24166KiB time=00:01:53.24
> bitrate=1748.2kbits/s speed=75.6x
>
>
> That is, AV1_QSV DV transcoding speed 75.6x/2x ~ 38x or fps 1891/50 ~ 38
> faster than corresponding with SVT-AV1.
>
> File sizes:
>
> 389M dv01_07.dv
> 24M dv01_07_svt-av1_pr4.webm
> 24M dv01_07_av1_qsv_pr4_b1557k.webm
>
>
> HDV -> AV1
> ----------
>
> SVT-AV1:
> ffmpeg -hide_banner -i hdv09_04.m2t -c:v libsvtav1 -preset 4 -crf 35 -c:a
> libvorbis hdv09_04_svt-av1_pr4.webm
> frame= 5963 fps= 24 q=35.0 Lsize= 113663KiB time=00:03:58.77
> bitrate=3899.6kbits/s speed=0.948x
>
> AV1_QSV:
> ffmpeg -hide_banner -hwaccel_output_format qsv -qsv_device
> /dev/dri/renderD128 -extra_hw_frames 16 -i hdv09_04.m2t -c:v av1_qsv
> -preset 4 -b:v 3700k hdv09_04_av1_qsv_pr4_bv3700k.webm
> frame= 5963 fps=482 q=-0.0 Lsize= 113271KiB time=00:03:58.77
> bitrate=3886.1kbits/s speed=19.3x
>
>
> That is, AV1_QSV HDV transcoding speed 19.3x/0.948x ~ 20x or fps 482/24 ~
> 20 faster than corresponding with SVT-AV1
>
impressive!
>
> File sizes:
>
> 745M hdv09_04.m2t
> 111M hdv09_04_svt-av1_pr4.webm
> 111M hdv09_04_av1_qsv_pr4_bv3700k.webm
>
> ------------------
>
I also hope quality is "good enough" for final/delivery transcode ...
> FFmpeg output for the latest QSV_AV1 transcoding follows.
> As seen the error messages messages are gone, though not quite clean as
> there are still some "disturbing" mpeg2video messages.
>
> SD-DV -> AV1
> ----------
> ffmpeg -hide_banner -hwaccel_output_format qsv -qsv_device
> /dev/dri/renderD128 -i dv01_07.dv -c:v av1_qsv -preset 4 -b:v 1570k -crf 35
> -c:a libvorbis dv01_07_av1_qsv_pr4_b1570k.webm
>
> libva info: VA-API version 1.21.0
> libva info: Trying to open /usr/lib64/dri/iHD_drv_video.so
> libva info: Found init function __vaDriverInit_1_20
> libva info: va_openDriver() returns 0
> libva info: VA-API version 1.21.0
> libva info: Trying to open /usr/lib64/dri/iHD_drv_video.so
> libva info: Found init function __vaDriverInit_1_20
> libva info: va_openDriver() returns 0
> [dv @ 0x5614ce553080] Estimating duration from bitrate, this may be
> inaccurate
> Input #0, dv, from 'dv01_07.dv':
> Metadata:
> timecode : 01:09:35:09
> Duration: 00:01:53.28, start: 0.000000, bitrate: 28800 kb/s
> Stream #0:0: Video: dvvideo, yuv420p, 720x576 [SAR 16:15 DAR 4:3], 28800
> kb/s, 60k fps, 25 tbr, 60k tbn
> Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
> [out#0/webm @ 0x5614ce3ea640] Codec AVOption crf (Select the quality for
> constant quality mode) has not been used for any stream. The most likely
> reason is either wrong type (e.g. a video option with no video streams) or
> that it is a private option of some encoder which was not actually used for
> any stream.
> Stream mapping:
> Stream #0:0 -> #0:0 (dvvideo (native) -> av1 (av1_qsv))
> Stream #0:1 -> #0:1 (pcm_s16le (native) -> vorbis (libvorbis))
> Press [q] to stop, [?] for help
> Output #0, webm, to 'dv01_07_av1_qsv_pr4_b1570k.webm':
> Metadata:
> timecode : 01:09:35:09
> encoder : Lavf61.1.100
> Stream #0:0: Video: av1, nv12(bottom coded first (swapped)), 720x576
> [SAR 16:15 DAR 4:3], q=2-31, 1570 kb/s, 25 fps, 1k tbn
> Metadata:
> encoder : Lavc61.3.100 av1_qsv
> Stream #0:1: Audio: vorbis, 48000 Hz, stereo, fltp
> Metadata:
> encoder : Lavc61.3.100 libvorbis
> [out#0/webm @ 0x5614ce3ea640] video:22613KiB audio:1495KiB subtitle:0KiB
> other streams:0KiB global headers:4KiB muxing overhead: 0.244968%
> frame= 2832 fps=1891 q=-0.0 Lsize= 24166KiB time=00:01:53.24
> bitrate=1748.2kbits/s speed=75.6x
>
>
> HDV->AV1
> ---------
> ffmpeg -hide_banner -hwaccel_output_format qsv -qsv_device
> /dev/dri/renderD128 -extra_hw_frames 16 -i hdv09_04.m2t -c:v av1_qsv
> -preset 4 -b:v 3700k hdv09_04_av1_qsv_pr4_bv3700k.webm
>
> libva info: VA-API version 1.21.0
> libva info: Trying to open /usr/lib64/dri/iHD_drv_video.so
> libva info: Found init function __vaDriverInit_1_20
> libva info: va_openDriver() returns 0
> libva info: VA-API version 1.21.0
> libva info: Trying to open /usr/lib64/dri/iHD_drv_video.so
> libva info: Found init function __vaDriverInit_1_20
> libva info: va_openDriver() returns 0
> [mpeg2video @ 0x5607564ea600] Invalid frame dimensions 0x0.
> Last message repeated 3 times
> [mpegts @ 0x56075643ee00] PES packet size mismatch
> [mpegts @ 0x56075643ee00] Packet corrupt (stream = 1, dts = 258142320).
> [mpegts @ 0x56075643ee00] Could not find codec parameters for stream 2
> (Unknown: none ([160][0][0][0] / 0x00A0)): unknown codec
> Consider increasing the value for the 'analyzeduration' (0) and
> 'probesize' (5000000) options
> [mpegts @ 0x56075643ee00] Could not find codec parameters for stream 3
> (Unknown: none ([161][0][0][0] / 0x00A1)): unknown codec
> Consider increasing the value for the 'analyzeduration' (0) and
> 'probesize' (5000000) options
> Input #0, mpegts, from 'hdv09_04.m2t':
> Duration: 00:03:59.06, start: 2629.496000, bitrate: 26110 kb/s
> Program 100
> Stream #0:0[0x810]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
> yuv420p(tv, bt709, top first), 1440x1080 [SAR 4:3 DAR 16:9], 25000 kb/s, 25
> fps, 25 tbr, 90k tbn
> Side data:
> cpb: bitrate max/min/avg: 25000000/0/0 buffer size: 7340032
> vbv_delay: N/A
> Stream #0:1[0x814]: Audio: mp2 (mp3float) ([3][0][0][0] / 0x0003), 48000
> Hz, stereo, fltp, 384 kb/s
> Stream #0:2[0x815]: Unknown: none ([160][0][0][0] / 0x00A0)
> Stream #0:3[0x811]: Unknown: none ([161][0][0][0] / 0x00A1)
> Stream mapping:
> Stream #0:0 -> #0:0 (mpeg2video (native) -> av1 (av1_qsv))
> Stream #0:1 -> #0:1 (mp2 (native) -> opus (libopus))
> Press [q] to stop, [?] for help
> [libopus @ 0x560756595f80] No bit rate set. Defaulting to 96000 bps.
> Output #0, webm, to 'hdv09_04_av1_qsv_pr4_bv3700k.webm':
> Metadata:
> encoder : Lavf61.1.100
> Stream #0:0: Video: av1, nv12(tv, bt709, top coded first (swapped)),
> 1440x1080 [SAR 4:3 DAR 16:9], q=2-31, 3700 kb/s, 25 fps, 1k tbn
> Metadata:
> encoder : Lavc61.3.100 av1_qsv
> Stream #0:1: Audio: opus, 48000 Hz, stereo, s16, 96 kb/s
> Metadata:
> encoder : Lavc61.3.100 libopus
> [mpegts @ 0x56075643ee00] PES packet size mismatch0:03:51.36
> bitrate=3834.3kbits/s speed=19.3x
> [mpegts @ 0x56075643ee00] Packet corrupt (stream = 1, dts = 258142320).
> [mpeg2video @ 0x560756595500] ac-tex damaged at 10 61
> [mpeg2video @ 0x560756595500] Warning MVs not available
> [mpeg2video @ 0x560756595500] concealing 630 DC, 630 AC, 630 MV errors in
> P frame
> [vist#0:0/mpeg2video @ 0x5607564f6940] [dec:mpeg2video @ 0x560756440480]
> corrupt decoded frame
> [out#0/webm @ 0x5607565b2040] video:110669KiB audio:2490KiB subtitle:0KiB
> other streams:0KiB global headers:0KiB muxing overhead: 0.098391%
> frame= 5963 fps=482 q=-0.0 Lsize= 113271KiB time=00:03:58.77
> bitrate=3886.1kbits/s speed=19.3x
>
so, may be after whole setup was verified to function correctly at least in
bare ffmpeg we can iterate back to vaapi for creating cingg profile ? (if
I understand correctly qsv adds additional layer/library on top of vaapi
driver - not something I wish to deal with in appimage packaging ....)
>
>
>
>
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