[Cin] SVT-AV1 encoding quite fast on x86_64

Sat Dec 30 16:28:30 CET 2023

Den 30.12.2023 10:03, skrev Andrea paz:
>> At first I tried to run it on Leap 15.5, but its glibc 2.31 was too old.
>> On Tumbleweed-Slowroll the cin-aom-38_svt.AppImage started ok.
> Thanks for the test. So it is useless to create appimage from one
> rolling because they only work on other rolling.

Well, Leap15.5 is openSUSE's LTS stable release, while 
Tumbleweed-Slowroll is the upcoming successor (a stabilized version of 
the fast rolling Tumbleweed).
If the cin-aom-38_svt error or warning startup and rendering messages is 
of interest to look at, I have attached them here for each of these releases
Notice that on Tumbleweed-Slowroll this is the very first Cin-GG startup 
and run from scratch, without any project setup etc.

cin-aom-38_svt_startup_messages.tar.xz

>> But unhappily it was a bit even slower on my machine than the previous aom.
>> And continued playback Video with aspect ratio 4:3 and scratch sound on the Audio.
>> smpte170m colors seems for me to be for NTSC, and not for PAL video.
>> Rendering took 0:41:08, almost 6 times the clip duration
> I too have a lot of confusion about how CinGG treats colors in
> specific cases. See the notions on Kernel.org if they can help you:
>
> https://www.kernel.org/doc/html/latest/userspace-api/media/v4l/colorspaces-details.html
>
> In the meantime, I'll post the ffprobes from my tests (project's size
> 1920x1080; 16:9. source1: DNxHR, 1080p; source2: h264, 2160p; source3:
> VP9, 640x480):
>
> AOM_3.8.0:
>
> $ ffprobe -hide_banner test_aom_38.webm
> [libdav1d @ 0x5619aeb26140] libdav1d 1.3.0
> Input #0, matroska,webm, from 'test_aom_38.webm':
>    Metadata:
>      ENCODER         : Lavf60.16.100
>    Duration: 00:01:12.17, start: 0.000000, bitrate: 1266 kb/s
>    Stream #0:0: Video: av1 (Main), yuv420p(pc,
> bt2020nc/unknown/unknown, progressive), 1920x1080, SAR 1:1 DAR 16:9,
> 24 fps, 24 tbr, 1k tbn
>      Metadata:
>        DURATION        : 00:01:12.128000000
>    Stream #0:1(ita): Audio: vorbis, 48000 Hz, stereo, fltp
>      Metadata:
>        DURATION        : 00:01:12.170000000
> [libdav1d @ 0x5619aeb62400] libdav1d 1.3.0
>
> (12.5 fps; 10.9 MB,)
>
> AOM-SVT:
>
> $ ffprobe -hide_banner test_aom_svt.webm
> [libdav1d @ 0x55b740a0a140] libdav1d 1.3.0
> Input #0, matroska,webm, from 'test_aom_svt.webm':
>    Metadata:
>      ENCODER         : Lavf60.16.100
>    Duration: 00:01:12.17, start: 0.000000, bitrate: 1369 kb/s
>    Stream #0:0: Video: av1 (Main), yuv420p(pc,
> bt2020nc/unknown/unknown, progressive), 1920x1080, SAR 1:1 DAR 16:9,
> 24 fps, 24 tbr, 1k tbn
>      Metadata:
>        DURATION        : 00:01:12.128000000
>    Stream #0:1(ita): Audio: vorbis, 48000 Hz, stereo, fltp
>      Metadata:
>        DURATION        : 00:01:12.170000000
> [libdav1d @ 0x55b740a46400] libdav1d 1.3.0
>
> (11.8 MB; 58 fps)
>
> The video, but especially the audio, seem to me to be of slightly
> lower quality than the original sources.
>
>> If SVT-AV1 1.8.0 rendering is possible with cin-aom-38_svt.AppImage, where do you select this?
> Among the webm presets should also appear av1-svt.webm, the profile
> created by Andrew; see image:
>
> https://postimg.cc/cgjQfR11

Yes, thanks I found it. I had not looked there or simply overseen it, as 
it normally is referred to as svt-av1 :)
And SVT-AV1 1.8 confirms to be VERY FAST and of most interest as default 
CPU AV1 encoder (also for CinGG?)

    As mentioned in Phoronix recent release article:
    https://www.phoronix.com/news/SVT-AV1-1.8-Released
    SVT-AV1 1.8 brings more speed-ups at various preset levels --
    especially M0 to M6 where there can be gains as much as 53%.

Two Cin-GG AV1-SVT rendering tests of the same loaded hdv07_05.m2t clip 
took 0:02:54 and 0:02:51 respectively.
If not due to technical issues (see the attached messages), that is 
impressive FPS = 10240/172 = 59.5 or 2.4x faster than the clip duration!
And compared to the AOM 3.8 40-minutes rendering above, this is 14.3x 
times faster!
The CinGG svt-av1 v.1.8 preset seemed to use Preset 6 and CRF 26

In comparison I started a temporary test with the same FFmpeg SVT-AV1 v. 
1.7 Preset 6, which seemed to perform much slower (ca. 8 FPS).
The default faster Preset 10 and CRF 35 from my previous FFPmpeg test of 
the same clip provided 68 FPS.

That is, very Promising SVT-AV1 speed rendering, BUT
the HDV Aspect ratio and broken Audio has to be fixed in CinGG
yuv420p(pc, smpte170m/unknown/unknown), 1440x1080 [SAR 1:1 DAR 4:3]

Or the procedure has to be clarified, in case I have done something 
wrong or inadequate.

Again, FFmpeg encoding is correct for both Aspect ratio (SAR 4:3 DAR 
16:9) and clean Audio:
yuv420p(tv, bt709), 1440x1080 [SAR 1:1 DAR 4:3], SAR 4:3 DAR 16:9

See the output below:

    du -sh hdv07*
    235M    hdv07_05_cingg_aom-av1.webm
    241M    hdv07_05_m2t_cingg_aom38-av1.webm
    220M    hdv07_05_m2t_cingg_svt-av1_pr6.webm
    239M    hdv07_05_m2t_svt-av1_pr10.webm
    229M    hdv07_05_m2t_svt-av1_pr6.webm

    ffplay -hide_banner hdv07_05_m2t_cingg_svt-av1_pr6.webm
    [libdav1d @ 0x7fcc5c005a80] libdav1d 1.0.0    0KB sq=    0B f=0/0
    Input #0, matroska,webm, from 'hdv07_05_m2t_cingg_svt-av1_pr6.webm':
       Metadata:
         ENCODER         : Lavf60.16.100
       Duration: 00:06:58.08, start: 0.000000, bitrate: 4413 kb/s
       Stream #0:0: Video: av1 (Main), yuv420p(pc,
    smpte170m/unknown/unknown), 1440x1080 [SAR 1:1 DAR 4:3], 25 fps, 25
    tbr, 1k tbn, 1k tbc
         Metadata:
           DURATION        : 00:06:58.043000000
       Stream #0:1(eng): Audio: vorbis, 48000 Hz, stereo, fltp
         Metadata:
           DURATION        : 00:06:58.082000000
    [libdav1d @ 0x7fcc5c0d2e00] libdav1d 1.0.0
       14.58 A-V:  0.023 fd=   6 aq=   18KB vq=  597KB sq=    0B f=0/0

    ffplay -hide_banner hdv07_05_m2t_svt-av1_pr6.webm
    [libdav1d @ 0x7ff21c005dc0] libdav1d 1.0.0    0KB sq=    0B f=0/0
    Input #0, matroska,webm, from 'hdv07_05_m2t_svt-av1_pr6.webm':
       Metadata:
         ENCODER         : Lavf60.3.100
       Duration: 00:06:58.28, start: 0.000000, bitrate: 4576 kb/s
       Stream #0:0: Video: av1 (Main), yuv420p(tv, bt709), 1440x1080
    [SAR 1:1 DAR 4:3], SAR 4:3 DAR 16:9, 25 fps, 25 tbr, 1k tbn, 1k tbc
         Metadata:
           ENCODER         : Lavc60.3.100 libsvtav1
           DURATION        : 00:06:58.283000000
       Stream #0:1: Audio: vorbis, 48000 Hz, stereo, fltp
         Metadata:
           ENCODER         : Lavc60.3.100 libvorbis
           DURATION        : 00:06:57.939000000
    [libdav1d @ 0x7ff21c0d2380] libdav1d 1.0.0
        6.08 A-V: -0.002 fd=   1 aq=   12KB vq=  360KB sq=    0B f=0/0

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