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Old 3rd March 2019, 17:03   #1501  |  Link
v0lt
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Quote:
Originally Posted by Wolfberry View Post
Test on this build. i5-3570K.
Code:
-t 10 Stream2_AV1_4K_22.7mbps.webm -benchmark -f null -
libaom-av1 - max 15 fps
libdav1d - max 13 fps
libdav1d -threads 4 -tilethreads 4 - max 18 fps
libdav1d -threads 8 -tilethreads 1 - max 18 fps
I see progress compared to last time.

Please give me a link to a good 10-bit AV1 sample.

Last edited by v0lt; 3rd March 2019 at 19:02.
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Old 3rd March 2019, 17:08   #1502  |  Link
sneaker_ger
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Quote:
Originally Posted by v0lt View Post
Please give me a link to a good 10-bit AV1 sample.
http://download.opencontent.netflix....x=AV1/Chimera/
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Old 3rd March 2019, 18:18   #1503  |  Link
nevcairiel
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Note that 10-bit is not an optimization target at all yet, since its not in use in the real world at all yet either.
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Old 3rd March 2019, 19:00   #1504  |  Link
v0lt
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@nevcairiel
Why does libdav1d give a speed less than libaom-av1 with default settings? 8 and 10-bit. Poorly selected default settings?

i5-3570K, AV1 10-бит.
Code:
-ss 5 -t 20 Chimera-AV1-10bit-1920x1080-6191kbps.mp4 -benchmark -f null -
libaom-av1 - max 25 fps
libdav1d - max 21 fps
libdav1d -threads 4 -tilethreads 4 - max 25 fps
libdav1d -threads 8 -tilethreads 1 - max 26 fps
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Old 3rd March 2019, 20:25   #1505  |  Link
soresu
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Dunno if anyone noticed the CNN restoration experiment commited to the "experimental" branch at the AOMedia git repo.
Link here.
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Old 3rd March 2019, 22:03   #1506  |  Link
EwoutH
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@v0lt Which version of dav1d are you using? You can use `dav1d --version` to check.

A big factor is because your CPU doesn't support AVX2 instructions, where dav1d is most optimized for (Haswell (4000-series) and newer support it). Your CPU i5-3570K falls back on SSSE3, which recently got a lot faster with dav1d.

Also can you try -tilethreads 4 without a threads option?

Anyway there is at least one patch incoming that's not yet in FFmpeg that will improve performance with 10 to 30% percent, depending on content.

Last edited by EwoutH; 3rd March 2019 at 22:06.
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Old 3rd March 2019, 22:21   #1507  |  Link
dapperdan
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I interpreted volts question as being "if I can get faster results from dav1d by passing some settings, why can't it figure those out by default".

Presumably, if those patches land the default might beat libaom, but there would still be extra speed a ilavle as long as you knew the right options to pass.

There may well be a good reason for these not being the defaults though.
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Old 4th March 2019, 10:43   #1508  |  Link
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Through the synthetic test mode ffmpeg, I get higher rates of DAV1D than AOM. But in real conditions I get worse playing than AOM (via ffplay). We are waiting for optimization for SSSE3.
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Old 4th March 2019, 15:15   #1509  |  Link
sneaker_ger
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Quote:
Originally Posted by EwoutH View Post
Also can you try -tilethreads 4 without a threads option?
On i5-2500K with ffmpeg (binary from one post above) -tiletreads 4 (alone) is some 15% slower than -threads 6 -tilethreads 2. ("Blackmagic Pocket Cinema Camera 4K ‘Nature’-oAbB4dQOz4I" 1080p24)
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Old 4th March 2019, 17:21   #1510  |  Link
v0lt
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Quote:
Originally Posted by EwoutH View Post
@v0lt Which version of dav1d are you using? You can use `dav1d --version` to check.
ffmpeg-4.2-N-93276-g3b23eb283a-win64-static provided by Wolfberry. But the links are gone.

Quote:
Originally Posted by Wolfberry View Post
Thank. This build works better.

i5-3570K
Code:
ffmpeg -hide_banner -t 10 -c:v <codec&parameters> -i Stream2_AV1_4K_22.7mbps.webm -benchmark -f null -
libaom-av1 - max 15 fps
libdav1d - max 16 fps
libdav1d -threads 4 -tilethreads 4 - max 24 fps
libdav1d -threads 8 -tilethreads 1 - max 21 fps
Code:
ffmpeg -hide_banner -ss 5 -t 20 -c:v <codec&parameters> -i Chimera-AV1-8bit-1920x1080-6736kbps.mp4 -benchmark -f null -
libaom-av1 - max 60 fps
libdav1d - max 64 fps
libdav1d -threads 4 -tilethreads 4 - max 105 fps
libdav1d -threads 8 -tilethreads 1 - max 87 fps
Code:
ffmpeg -hide_banner -ss 5 -t 20 -c:v <codec&parameters> -i Chimera-AV1-10bit-1920x1080-6191kbps.mp4 -benchmark -f null -
libaom-av1 - max 25 fps
libdav1d - max 21 fps
libdav1d -threads 4 -tilethreads 4 - max 26 fps
libdav1d -threads 8 -tilethreads 1 - max 27 fps
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Old 4th March 2019, 18:58   #1511  |  Link
benwaggoner
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Quote:
Originally Posted by mzso View Post
There's a solution.



Yay! Two more formats to sink into obscurity...
The time **IS** ripe for a new replacement for JPEG/GIF/PNG. We're looking at >>2x compression efficiency improvements. And HEIF is getting good traction in the Apple ecosystem.

I would prefer an AV1 in HEIF over a new file format, though. HEIF has a lot of great features as a container format.
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Old 4th March 2019, 22:50   #1512  |  Link
nevcairiel
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HEIFs tiling is pure cancer. It's a typical format designed by committee, overly complex for its own good.
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Old 5th March 2019, 10:34   #1513  |  Link
sneaker_ger
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dav1d 0.2.0 is final.

https://medium.com/@ewoutterhoeven/d...e-eac3e43868c2
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Old 5th March 2019, 10:34   #1514  |  Link
hajj_3
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DAV1D 0.2.0 final is out: https://code.videolan.org/videolan/dav1d/tags

Hopefully a new vlc player will be released soon with this integrated.
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Old 5th March 2019, 15:16   #1515  |  Link
utack
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Quote:
Originally Posted by hajj_3 View Post
DAV1D 0.2.0 final is out: https://code.videolan.org/videolan/dav1d/tags

Hopefully a new vlc player will be released soon with this integrated.
Not yet
You can check here
https://git.videolan.org/?p=vlc.git;...es.mak;hb=HEAD
http://downloads.videolan.org/pub/videolan/dav1d/
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Old 7th March 2019, 03:45   #1516  |  Link
hin12
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Is 480p the highest quality option for all AV1 videos on YouTube? I'm seeing that a lot of popular videos are being encoded to AV1, but only at the 144p, 240p, 360p and 480p resolutions.
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Old 7th March 2019, 10:03   #1517  |  Link
sneaker_ger
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Yeah. But even Gangnam Style (3.3 Billion views) is only available in 720p with AV1 (1080p is H.264+VP9 only.), Despacito (6 Billion views) is limited to 480p AV1. On the AV1 beta playlist it seems 1080p is max for AV1, 1440p and 2160p are reserved for VP9.

Last edited by sneaker_ger; 7th March 2019 at 10:06.
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Old 7th March 2019, 13:13   #1518  |  Link
dapperdan
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When VP9 rolled out they talked about how delivering video to people with decent spec machines but terrible connectivity was a sweet spot where VP9 increased the amount of video watched. I'd guess they've run the numbers and they get more benefit from encoding the lower sizes in AV1 so that's what they prioritize.
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Old 7th March 2019, 16:08   #1519  |  Link
lvqcl
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Some time ago I was able to download "Childish Gambino - Feels Like Summer" (https://www.youtube.com/watch?v=F1B9Fk_SgI0) in 1080p AV1 format; now its max. available resolution for AV1 is 720p.

Maybe 1080p AV1 is just too heavy to decode.
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Old 7th March 2019, 16:11   #1520  |  Link
sneaker_ger
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Or maybe they are re-encoding with new encoder version/settings and it will take some weeks before it's finished.
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