Author Topic: AV1 is done!  (Read 685 times)

Offline JoWa

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AV1 is done!
« on: March 28, 2018, 12:17:44 PM »
The Alliance for Open Media Kickstarts Video Innovation Era with “AV1” Release
Quote from: AOMedia
Today, the Alliance is proud to announce the public release of the AOMedia Video Codec 1.0 (AV1) specification, which delivers cross-platform, 4K UHD or higher online video, royalty-free – all while lowering data usage.

https://aomedia.org/news/in-the-news/
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Offline JoWa

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Re: AV1 is done!
« Reply #1 on: April 12, 2018, 12:29:10 AM »
Blog post by Yu Liu, Facebook: AV1 beats x264 and libvpx-vp9 in practical use case

Blog post by Christopher “Monty” Montgomery, Xiph: next generation video: Introducing AV1

The specification is still a draft: https://aomediacodec.github.io/av1-spec/
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Offline JoWa

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Re: AV1 is done!
« Reply #2 on: June 25, 2018, 11:51:23 PM »
AOMedia Codec Workgroup Approved version 1.0

AV1 Bitstream and Decoding Process Specification

It is now a little more done than it was in March. ;)

AV1 decode is enabled by default in Chrome 69: https://www.chromestatus.com/feature/5729898442260480
« Last Edit: June 26, 2018, 10:56:22 PM by JoWa »
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Offline JoWa

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Re: AV1 is done!
« Reply #3 on: July 26, 2018, 06:07:22 AM »
Here is an AV1-encoded video: https://video.1ko.ch/codec-comparison/videos/av1-2018-06_550.webm

Code: [Select]
Format                                   : WebM
Format version                           : Version 4 / Version 2
File size                                : 1.09 MiB
Duration                                 : 16 s 625 ms
Overall bit rate                         : 551 kb/s
Writing application                      : aomenc 1.0.0-6-gce8f4811b
Writing library                          : libwebm-0.2.1.0

Video
ID                                       : 1
Format                                   : V_AV1
Codec ID                                 : V_AV1
Duration                                 : 16 s 608 ms
Bit rate                                 : 523 kb/s
Width                                    : 1 920 pixels
Height                                   : 800 pixels
Display aspect ratio                     : 2.40:1
Frame rate mode                          : Constant
Frame rate                               : 24.025 FPS
Bits/(Pixel*Frame)                       : 0.014
Stream size                              : 1.03 MiB (95%)
Language                                 : English
Default                                  : Yes
Forced                                   : No

I played it with Chrome 69 Dev. Not so great performance, but I expect that to improve soon. Make sure chrome://flags/#enable-av1-decoder is enabled.

Firefox Nightly should also be able to play it..
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Offline John Buchanan

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Re: AV1 is done!
« Reply #4 on: July 26, 2018, 04:41:19 PM »
That setting is not in Chrome 68 stable
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Offline JoWa

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Re: AV1 is done!
« Reply #5 on: July 26, 2018, 11:32:55 PM »
No, Chrome 69 (Opera 56) will be the first stable and beta to have it. It debuted in Chrome 65 Dev, but was “not ready for the beta channel”. (The specification was frozen 25 June.)
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Offline JoWa

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Re: AV1 is done!
« Reply #6 on: August 24, 2018, 02:23:41 AM »
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Offline JoWa

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Re: AV1 is done!
« Reply #7 on: September 20, 2018, 02:06:56 PM »
AV1 on YouTube. Enable at https://www.youtube.com/testtube

AV1 Beta Launch Playlist

Quote from: YouTube Developers
The first videos to receive YouTube's AV1 transcodes.

Support for AV1 in MP4 within Media Source is available in Chrome 70, and Firefox 63 builds newer than September 13 with the media.av1.enabled pref set.

Using a supported browser and choosing the ‘Prefer AV1 for SD’ setting on youtube.com/testtube, you should see AV1 used for these videos when playing less than 480p, switching to VP9 for higher resolutions.

At time of writing, these transcodes are encoded at a very high bitrate for decoder performance testing.

The videos selected here represent a large slice of content that YouTube users enjoy, from talking-head programs to popular music videos. We've chosen action videos featuring snow and water spray, as these tend to stress encoders and decoders alike. Animated footage and game captures (coming soon) provide a wider range of content, and we round out the set with some beautiful stuff straight from the makers of cinema cameras.

Just a few videos today, but our commitment to AV1 is strong, and we have ambitious goals for rolling out the new format. Look for AV1 transcodes on the videos from your favorite creators soon.

At FHD, it is sometimes a little heavy on the CPU, due to high bitrate and slow decoder.
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