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Old 27th March 2018, 12:01   #541  |  Link
nevcairiel
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Once av1 takes off, I would expect someone to develop a decoder for ffmpeg eventually. Encoders, probably not. Thats more suited for stand-alone projects from the sheer complexity of it.
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Old 27th March 2018, 12:03   #542  |  Link
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Of course, there will be several "Next Generation Video Codec" projects; e.g. there is a lively discussion about xvc in this board. ... [i]BTW, where is schweinsz?
I think mzso means other implementations of the AV1 specs. For example ffmpeg has two VP9 software decoders (as your quote from the help shows), the one coming from Google ("libvpx-vp9") and FFvp9 ("vp9") developed in spite of already having the free Google one.
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Old 27th March 2018, 12:09   #543  |  Link
LigH
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If ffmpeg developers disagree with some opinions of the original team about e.g. programming styles, I would not be surprised if they may be going to show how it can be made better; wasn't that a reason to develop VPx codecs in parallel to Google? I do not remember everything in detail, but I believe efficiency was one of the focus points.
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Old 27th March 2018, 12:42   #544  |  Link
mzso
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Originally Posted by sneaker_ger View Post
I think mzso means other implementations of the AV1 specs. For example ffmpeg has two VP9 software decoders (as your quote from the help shows), the one coming from Google ("libvpx-vp9") and FFvp9 ("vp9") developed in spite of already having the free Google one.
I don't see ffvp9 either in ffmpeg (zeranoe), which is strange if it's an ffmpeg internal decoder, as suggested the "ff" part.
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Old 27th March 2018, 12:52   #545  |  Link
sneaker_ger
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Like I quoted:
-c:v "vp9" is ffvp9
-c:v "libvpx-vp9" is the one from Google
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Old 27th March 2018, 13:38   #546  |  Link
nevcairiel
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They are not called "ffvp9" internally, its just "vp9", which is listed in the quoted output above.

Anyway distinct decoder implementations have several advantages. Often it helps to find bugs in the original decoder, and historically the ffmpeg decoders have also been faster - and they serve as a platform for hardware acceleration, which is not possible with an external decoder like using libaom.
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Old 27th March 2018, 14:11   #547  |  Link
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@sneaker_ger @nevcairiel
Ah, okay. Thanks for clearing that up. It was also confusing that it's named google VP9:
Code:
 VFS..D vp9                  Google VP9
 V....D libvpx-vp9           libvpx VP9 (codec vp9)
Quote:
Originally Posted by nevcairiel View Post
Once av1 takes off, I would expect someone to develop a decoder for ffmpeg eventually. Encoders, probably not. Thats more suited for stand-alone projects from the sheer complexity of it.
Yeah, a completely software encoder doesn't feel too likely to me. I guess if someone really wants a feature can just add it to aomenc, unless they're just morbidly resistant to external input. Maybe fork it at most.
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Old 27th March 2018, 19:00   #548  |  Link
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it's named google VP9
because Google developed the specifications (theory) further from the base of the VP8 specifications originally developed by On2. But there can be different implementations (practice), not only from Google, but also from different authors, still based on the same specifications, but with different code. The listing is indeed not really unambiguous.
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Old 27th March 2018, 19:53   #549  |  Link
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aomedia.org new site

Coming Soon to a Screen Near You
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Old 28th March 2018, 00:54   #550  |  Link
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aomedia.org new site

Coming Soon to a Screen Near You
Site looks nice
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Old 28th March 2018, 07:34   #551  |  Link
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Bloated and partially insecure.
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Old 28th March 2018, 12:39   #552  |  Link
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I wonder if aom will remain the only encoder/decoder, or whether third parties will develop something such as x264/x265 projects or maybe the ffmpeg people.
There is "rav1e" - rust AV1 encoder from Mozilla/Xiph guys: https://github.com/xiph/rav1e
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Old 28th March 2018, 14:19   #553  |  Link
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Mail just went out from AOMedia, looks like AV1 is now a codec
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Old 28th March 2018, 14:39   #554  |  Link
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Yep, AV1 1.0 spec is official: https://aomedia.org/the-alliance-for...h-av1-release/

1.0 spec (619 pages) PDF: https://aomediacodec.github.io/av1-spec/av1-spec.pdf

Last edited by hajj_3; 28th March 2018 at 14:56.
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Old 28th March 2018, 16:36   #555  |  Link
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Now, what plan / ideas do they have to speed it up by 10 to 50x?
And what sort of time frame could we expect that in?
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Old 28th March 2018, 16:42   #556  |  Link
birdie
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Can we have a subforum dedicated to AV1?.

I wonder why there's no subforum for VP8/VP9 codecs but they all might be put together.
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Old 28th March 2018, 16:47   #557  |  Link
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New era of video has begun.

Some big companies were already ready
https://aomedia.org/the-alliance-for...e-at-nab-2018/

ARM and Intel talk about fast adoption of AV1 into their hardware.
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Old 28th March 2018, 16:53   #558  |  Link
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Now, what plan / ideas do they have to speed it up by 10 to 50x?
And what sort of time frame could we expect that in?
They are most likely fixing all the bugs in the initial release in order to have a predictable foundation to work from before dropping in heuristics and optimisations as well as more SIMD instructions. A significant speed-up should be possible by simply reducing the search scope of the encoder at the expense of coding efficiency.
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Old 28th March 2018, 16:59   #559  |  Link
iwod
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And I notice the membership page

https://aomedia.org/membership/members/

Apple is the only one not using its logo?
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Old 28th March 2018, 17:00   #560  |  Link
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New era of video has begun.

Some big companies were already ready
https://aomedia.org/the-alliance-for...e-at-nab-2018/

ARM and Intel talk about fast adoption of AV1 into their hardware.
Ittiam will showcase its Content Adaptive Encoding (CAE) technology with a significantly speeded-up version of the AV1 encoder.

Cant wait to see what speed up that have.
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