[Cin] SVT-AV1 encoding quite fast on x86_64
Andrew Randrianasulu
randrianasulu at gmail.com
Sun Dec 17 13:43:05 CET 2023
вс, 17 дек. 2023 г., 15:29 Terje J. Hanssen <terjejhanssen at gmail.com>:
>
>
> Den 17.12.2023 00:05, skrev Andrew Randrianasulu:
>
>
>
> пт, 15 дек. 2023 г., 21:10 Terje J. Hanssen via Cin <
> cin at lists.cinelerra-gg.org>:
>
>>
>>
>> Den 14.12.2023 12:25, skrev Terje J. Hanssen:
>>
>> First, a summary from another current post and thread:
>> https://lists.cinelerra-gg.org/pipermail/cin/2023-December/007430.html
>>
>> I will add the re-encoded sample *SD DV *file using ffmpeg SVT-AV1, as I
>> was positive surprised how much faster (preset 10 about 25 sec) it was than
>> rendering AV1 with CinGG (libaom?) . I've tested three presets: 8, 10 and
>> 12. "Useable visible quality" for all.
>>
>> ffmpeg -i dv01_07.dv -c:v libsvtav1 -preset 8 -crf 35 -c:a libvorbis
>> dv01_07_svt-av1_pr8.webm
>> frame= 2832 fps= 66 q=35.0 Lsize= 28836kB time=00:01:53.26
>> bitrate=2085.6kbits/s speed=2.65x
>>
>> ffmpeg -i dv01_07.dv -c:v libsvtav1 -preset 10 -crf 35 -c:a libvorbis
>> dv01_07_svt-av1_pr10.webm
>> frame= 2832 *fps=112* q=35.0 Lsize= 34419kB time=00:01:53.26
>> bitrate=2489.4kbits/s speed=4.47x
>>
>> ffmpeg -i dv01_07.dv -c:v libsvtav1 -preset 12 -crf 35 -c:a libvorbis
>> dv01_07_svt-av1_pr12.webm
>> frame= 2832 fps=262 q=35.0 Lsize= 35913kB time=00:01:53.26
>> bitrate=2597.5kbits/s speed=10.5x
>>
>>
>>
>> The speed of SVT-AV1 encoding seems for me to be quite useable, at least
>> for personal use.
>>
>>
>>
>> As a reference to compare the SVT-AV1 results above, I've also tried to
>> encode the same input file using libaom-av1 and librav1e
>> with simple or none (default) parameters. Other, optimal tuned parameters
>> may possibly change the unsuccesful results here.
>> Seemingly something have to be wrong here, as I had to quit these
>> hopeless SLOW encoding attemps after a while:
>>
>> ffmpeg -i dv01_07.dv -c:v libaom-av1 -crf 30 -c:a libvorbis
>> dv01_07_libaom-av1.webm
>> ^C^Ze= 35 fps=0.1 q=0.0 size= 5kB time=00:00:03.00 bitrate=
>> 13.7kbits/s speed=0.00748x
>>
>> ffmpeg -i dv01_07.dv -c:v librav1e -c:a libvorbis dv01_07_librav1e.webm
>> frame= 471 fps=1.9 q=-0.0 Lsize= 4864kB time=00:00:19.11
>> bitrate=2084.4kbits/s speed=0.0791x
>>
>> The CPU (i7 quad-cores 8 threads) utilization was here between 100-200%,
>> while I think it ran at 700%+ for SVT-AV1.
>>
>> Anyway, apparently SVT-AV1 libsvtav1 shines as the superiour fastest and
>> simple to use CPU based AV1 encoder (before GPU hwaccels)
>>
>
> After rebuilding SVT-AV1 on termux for Neon acceleration I tried three
> variations of same file:
>
> du -h av1-1.8.0*
> 5.0M av1-1.8.0-pr12.webm
> 4.3M av1-1.8.0-pr2.webm
> 4.6M av1-1.8.0.webm
>
> all on crf 30
>
> ffmpeg -i 20081103140154.m2t -c:v libsvtav1 -an -preset 2 -crf 30
> av1-1.8.0-pr2.webm
>
> this one run at 0.2 fps
>
> ffmpeg -i 20081103140154.m2t -c:v libsvtav1 -an -preset 12 -crf 30
> av1-1.8.0-pr12.webm
>
> this one run up to 9.4 fps!
>
> ffmpeg -i 20081103140154.m2t -c:v libsvtav1 -an -preset 6 -crf 30
> av1-1.8.0.webm
>
> and this one run at 1.3 fps.
>
> all files encoded from same input:
>
> 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
>
> So, I guess on aarch64 tablet this one definitely not as fast as on
> desktop (x86_64) Intel.
>
>
>
> I also noticed this post 1 (yr. ago) on reddit, "SVT-AV1 on ARM"
> https://www.reddit.com/r/AV1/comments/z9fo51/svtav1_on_arm/
>
> ---------------------
>
> So, regarding my initial "FHD (yuv422p10le)" below, where the audio was
> lost during transcode from .mov to AV1 .webm:
> I have tried to interpret and experiment with FFMpeg's "Selecting streams
> with the -map option" https://trac.ffmpeg.org/wiki/Map
>
> ffprobe tells pcm_s24leand 16 channels in the Audio stream of the PreRes
> input file hd01.mov:
>
> Stream #0:0(eng): Video: prores (HQ) (apch / 0x68637061),
> yuv422p10le(tv, bt709/unknown/unknown, top coded first (swapped)),
> 1920x1080, 182130 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 2500 tbn, 2500
> tbc (default)
> Stream #0:1(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, 16
> channels, s32 (24 bit), 18432 kb/s (default)
>
> VLC playback the audio ok for the input file. So I tried a similar stream
> map for transcode, but without success: Still no audio.
>
Is there possibility that you just hear 'empty'/silent channels? Are they
all contain some audio, or some are silent?
Obviously I'm wrong applying this stream map numbering (just in case
> someone see the fault without using much energy on it)?
>
example from "man ffmpeg" says:
=====
For example, assuming INPUT is a stereo audio file, you can switch the two
audio channels with the following command:
ffmpeg -i INPUT -map_channel 0.0.1 -map_channel 0.0.0 OUTPUT
If you want to mute the first channel and keep the second:
ffmpeg -i INPUT -map_channel -1 -map_channel 0.0.1 OUTPUT
The order of the "-map_channel" option specifies the order of
the channels in
the output stream. The output channel layout is guessed from the
number of
channels mapped (mono if one "-map_channel", stereo if two,
etc.). Using "-ac" in combination of "-map_channel"
makes the channel gain levels to be updated if input
and output channel layouts don't match (for instance two
"-map_channel" options and "-ac 6").
=====
But may be you better to ask on ffmpeg-users mail list, not sure if anyone
was dealing with input files with such high number of channels there
recently, but it feels a bit more populated than our corner!
>
>
> ffmpeg -i hd01.mov -map 0:v -map 0:a -c:v libsvtav1 -preset 10 -crf 35
> -c:a libvorbis hd01_mov_svt-av1_pr10.webm
>
>
>
>> Ref:
>> https://ottverse.com/analysis-of-svt-av1-presets-and-crf-values/
>>
>>
>>
>> Here I add my latest test results for a *HDV (fps=69)* and a *FHD
>> (fps=51)* video clip.
>>
>> 2.0G hdv01_04.m2t
>> 383M hdv01_04_m2t_svt-av1_pr10.webm
>>
>> 1.7G hd01.mov
>> 20M hd01_mov_svt-av1_pr10.webm
>>
>>
>> *HDV* (yuv420p)
>> -------
>>
>> *ffprobe -hide_banner hdv01_04.m2t*
>> [mpeg2video @ 0x560c32966340] Invalid frame dimensions 0x0.
>> Last message repeated 7 times
>> [mpegts @ 0x560c32960c00] PES packet size mismatch
>> [mpegts @ 0x560c32960c00] Packet corrupt (stream = 1, dts = 295380000).
>> [mpegts @ 0x560c32960c00] 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 @ 0x560c32960c00] 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 'hdv01_04.m2t':
>> Duration: 00:10:57.34, start: 2624.856000, bitrate: 26134 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 ([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)
>> Unsupported codec with id 0 for input stream 2
>> Unsupported codec with id 0 for input stream 3
>> --------------
>>
>> *ffmpeg -i hdv01_04.m2t -c:v libsvtav1 -preset 10 -crf 35 -c:a libvorbis
>> hdv01_04_m2t_svt-av1_pr10.webm*
>> frame=16420 *fps= 69* q=34.0 Lsize= 391289kB time=00:10:57.36
>> bitrate=4876.2kbits/s speed=2.77x
>>
>>
>> *ffprobe -hide_banner hdv01_04_m2t_svt-av1_pr10.webm*
>> [libdav1d @ 0x562b42305540] libdav1d 1.3.0
>> Input #0, matroska,webm, from 'hdv01_04_m2t_svt-av1_pr10.webm':
>> Metadata:
>> ENCODER : Lavf60.3.100
>> Duration: 00:10:57.40, start: 0.000000, bitrate: 4875 kb/s
>> Stream #0:0: Video: av1 (Main), yuv420p(tv, bt709), 1440x1080, SAR 4:3
>> DAR 16:9, 25 fps, 25 tbr, 1k tbn
>> Metadata:
>> ENCODER : Lavc60.3.100 libsvtav1
>> DURATION : 00:10:57.403000000
>> Stream #0:1: Audio: vorbis, 48000 Hz, stereo, fltp
>> Metadata:
>> ENCODER : Lavc60.3.100 libvorbis
>> DURATION : 00:10:57.171000000
>> [libdav1d @ 0x562b42361540] libdav1d 1.3.0
>>
>> *FHD* *(*yuv422p10le*)*
>> -----
>>
>> *ffprobe hd01.mov*
>> .....
>> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'hd01.mov':
>> Metadata:
>> creation_time : 2016-02-23T23:49:21.000000Z
>> Duration: 00:01:11.28, start: 0.000000, bitrate: 200496 kb/s
>> Stream #0:0[0x1](eng): Video: prores (HQ) (apch / 0x68637061),
>> *yuv422p10le(bt709*, top coded first (swapped)), 1920x1080, 182130 kb/s,
>> SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 2500 tbn (default)
>> Metadata:
>> creation_time : 2016-02-23T23:49:21.000000Z
>> handler_name : Apple Video Media Handler
>> vendor_id : appl
>> encoder : Apple ProRes 422 (HQ)
>> Stream #0:1[0x2](eng): *Audio*: pcm_s24le (lpcm / 0x6D63706C), 48000
>> Hz, 16 channels, s32 (24 bit), 18432 kb/s (default)
>> Metadata:
>> creation_time : 2016-02-23T23:49:21.000000Z
>> handler_name : Apple Sound Media Handler
>> vendor_id : [0][0][0][0]
>>
>>
>> * ffmpeg -i hd01.mov -c:v libsvtav1 -preset 10 -crf 35 -c:a libvorbis
>> hd01_mov_svt-av1_pr10.webm*
>> frame= 1781 *fps= 51* q=35.0 Lsize= 19732kB time=00:01:11.26
>> bitrate=2268.3kbits/s speed=2.03x
>>
>>
>> *ffprobe -hide_banner hdv01_04_m2t_svt-av1_pr10.webm*
>> [libdav1d @ 0x562b42305540] libdav1d 1.3.0
>> Input #0, matroska,webm, from 'hdv01_04_m2t_svt-av1_pr10.webm':
>> Metadata:
>> ENCODER : Lavf60.3.100
>> Duration: 00:10:57.40, start: 0.000000, bitrate: 4875 kb/s
>> Stream #0:0: Video: av1 (Main), yuv420p(tv, bt709), 1440x1080, SAR 4:3
>> DAR 16:9, 25 fps, 25 tbr, 1k tbn
>> Metadata:
>> ENCODER : Lavc60.3.100 libsvtav1
>> DURATION : 00:10:57.403000000
>> Stream #0:1: Audio: vorbis, 48000 Hz, stereo, fltp
>> Metadata:
>> ENCODER : Lavc60.3.100 libvorbis
>> DURATION : 00:10:57.171000000
>>
>>
>> An issue is that the audio was lost during the conversion from .mov to
>> .webm, so I attach the full ffmpeg output below.
>> (possibly a mis-match regarding the audio stream #numbers ?)
>>
>> *ffmpeg -i hd01.mov -c:v libsvtav1 -preset 10 -crf 35 -c:a libvorbis
>> hd01_mov_svt-av1_pr10.webm*
>> ...
>> Guessed Channel Layout for Input Stream #0.1 : hexadecagonal
>> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'hd01.mov':
>> Metadata:
>> creation_time : 2016-02-23T23:49:21.000000Z
>> Duration: 00:01:11.28, start: 0.000000, bitrate: 200496 kb/s
>> Stream #0:0[0x1](eng): Video: prores (HQ) (apch / 0x68637061),
>> yuv422p10le(bt709, top coded first (swapped)), 1920x1080, 182130 kb/s, SAR
>> 1:1 DAR 16:9, 25 fps, 25 tbr, 2500 tbn (default)
>> Metadata:
>> creation_time : 2016-02-23T23:49:21.000000Z
>> handler_name : Apple Video Media Handler
>> vendor_id : appl
>> encoder : Apple ProRes 422 (HQ)
>> Stream #0:1[0x2](eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz,
>> 16 channels, s32 (24 bit), 18432 kb/s (default)
>> Metadata:
>> creation_time : 2016-02-23T23:49:21.000000Z
>> handler_name : Apple Sound Media Handler
>> vendor_id : [0][0][0][0]
>> Stream mapping:
>> Stream #0:0 -> #0:0 (prores (native) -> av1 (libsvtav1))
>> Stream #0:1 -> #0:1 (pcm_s24le (native) -> vorbis (libvorbis))
>> Press [q] to stop, [?] for help
>> Svt[info]: -------------------------------------------
>> Svt[info]: SVT [version]: SVT-AV1 Encoder Lib v1.7.0
>> Svt[info]: SVT [build] : GCC 13.2.1 20230912 [revision
>> b96e66fd4ef3e36983969fb8cdd1956f551a074b] 64 bit
>> Svt[info]: LIB Build date: Nov 3 2023 00:00:00
>> Svt[info]: -------------------------------------------
>> Svt[info]: Number of logical cores available: 8
>> Svt[info]: Number of PPCS 59
>> Svt[info]: [asm level on system : up to avx2]
>> Svt[info]: [asm level selected : up to avx2]
>> Svt[info]: -------------------------------------------
>> Svt[info]: SVT [config]: main profile tier (auto) level (auto)
>> Svt[info]: SVT [config]: width / height / fps numerator / fps denominator
>> : 1920 / 1080 / 25 / 1
>> Svt[info]: SVT [config]: bit-depth / color format :
>> 10 / YUV420
>> Svt[info]: SVT [config]: preset / tune / pred struct
>> : 10 / PSNR / random access
>> Svt[info]: SVT [config]: gop size / mini-gop size / key-frame type
>> : 161 / 16 / key frame
>> Svt[info]: SVT [config]: BRC mode / rate factor : CRF
>> / 35
>> Svt[info]: -------------------------------------------
>> Output #0, webm, to 'hd01_mov_svt-av1_pr10.webm':
>> Metadata:
>> encoder : Lavf60.3.100
>> Stream #0:0(eng): Video: av1, yuv420p10le(tv, bt709, top coded first
>> (swapped)), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 25 fps, 1k tbn (default)
>> Metadata:
>> creation_time : 2016-02-23T23:49:21.000000Z
>> handler_name : Apple Video Media Handler
>> vendor_id : appl
>> encoder : Lavc60.3.100 libsvtav1
>> Stream #0:1(eng): Audio: vorbis, 48000 Hz, hexadecagonal, fltp (default)
>> Metadata:
>> creation_time : 2016-02-23T23:49:21.000000Z
>> handler_name : Apple Sound Media Handler
>> vendor_id : [0][0][0][0]
>> encoder : Lavc60.3.100 libvorbis
>> frame= 1781 fps= 51 q=35.0 Lsize= 19732kB time=00:01:11.26
>> bitrate=2268.3kbits/s speed=2.03x
>> video:18635kB audio:1059kB subtitle:0kB other streams:0kB global
>> headers:3kB muxing overhead: 0.193378%
>>
>>
>>
>>
>> --
>> Cin mailing list
>> Cin at lists.cinelerra-gg.org
>> https://lists.cinelerra-gg.org/mailman/listinfo/cin
>>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.cinelerra-gg.org/pipermail/cin/attachments/20231217/690368c6/attachment-0001.htm>
More information about the Cin
mailing list