Alliance for Open Media codecs

[nevcairiel]

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.

[sneaker_ger]

Originally Posted by LigH

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.

[LigH]

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.

[mzso]

Originally Posted by sneaker_ger

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.

[sneaker_ger]

Like I quoted:
-c:v "vp9" is ffvp9
-c:v "libvpx-vp9" is the one from Google

[nevcairiel]

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.

[mzso]

@sneaker_ger @nevcairiel
Ah, okay. Thanks for clearing that up. It was also confusing that it's named google VP9:

 VFS..D vp9                  Google VP9
 V....D libvpx-vp9           libvpx VP9 (codec vp9)

Originally Posted by nevcairiel

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.

[LigH]

Originally Posted by mzso

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.

[easyfab]

aomedia.org new site

Coming Soon to a Screen Near You

[hajj_3]

Originally Posted by easyfab

aomedia.org new site

Coming Soon to a Screen Near You

Site looks nice

[LigH]

Bloated and partially insecure.

[Quikee]

Originally Posted by mzso

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

[bstrobl]

Mail just went out from AOMedia, looks like AV1 is now a codec

[hajj_3]

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

[iwod]

Originally Posted by hajj_3

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

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?

[birdie]

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.

[IgorC]

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.

[bstrobl]

Originally Posted by iwod

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.

[iwod]

And I notice the membership page

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

Apple is the only one not using its logo?

[iwod]

Originally Posted by IgorC

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.