Alliance for Open Media codecs

[ksec]

Originally Posted by Yups

https://twitter.com/dylan522p/status...87898092425220


What is going on with AV1, why is there such a lacklustre support from some major players?

It has been explained quite a few times in this thread for the past 2-3 years. But basically die size, cost, ( and profits ) engineering, power usage and politics.

Although I do think Qualcomm would support it next year along side with VVC. The A14 is capable of software decoding 4K AV1 under 1 watts. So if google really want to push it there is no reason why they cant turn on AV1 support on A15 or A16 with software update. But for reference the same 4K on VP9 and HEVC would only require ~150mW on Hardware decoder.

[benwaggoner]

Originally Posted by ksec

It has been explained quite a few times in this thread for the past 2-3 years. But basically die size, cost, ( and profits ) engineering, power usage and politics.

Although I do think Qualcomm would support it next year along side with VVC. The A14 is capable of software decoding 4K AV1 under 1 watts. So if google really want to push it there is no reason why they cant turn on AV1 support on A15 or A16 with software update. But for reference the same 4K on VP9 and HEVC would only require ~150mW on Hardware decoder.

The biggest problem for SW decode is that premium content really drives adoption and usage of new codecs, because quality and efficiency are at a premium and content is of much longer duration. And premium content requires solid HW DRM for HD, and even more secure for 4K. There are platforms where it possible to integrate a SW decoder into DRM, but many can't at all.

And watching 2 hour movie, just one extra watt on a phone can materially reduce battery life.

YouTube, delivering non-DRM'ed, shorter clips with a much lower quality expectation, can use SW decode where streaming service providers like Netflix and Disney+ cannot.

[RanmaCanada]

Originally Posted by ksec

It has been explained quite a few times in this thread for the past 2-3 years. But basically die size, cost, ( and profits ) engineering, power usage and politics.

Although I do think Qualcomm would support it next year along side with VVC. The A14 is capable of software decoding 4K AV1 under 1 watts. So if google really want to push it there is no reason why they cant turn on AV1 support on A15 or A16 with software update. But for reference the same 4K on VP9 and HEVC would only require ~150mW on Hardware decoder.

There is also the fact that almost no one is paying the programmers to work on it, as most of the development appears to have been done by the community. If Google, MS, Netflix et al were actually serious about this, you figure they would hire a literal army of programmers to solve this. There is also the fact that any encoding to be done with it, is extremely confusing as there is almost no documentation.

[BlueSwordM]

What are you talking about?

Most of the people working on AV1 are indeed paid developers by Google, Netflix, Facebook, Visonular, Videolan, Two-Orioles, Intel, etc.

[Mr_Khyron]

https://github.com/obsproject/obs-st...g/27.2.0-beta1

• Added AOM AV1 and SVT-AV1 encoders (note that these are currently considered experimental, work best with CPUs that have many cores, and are only accessible for recording in advanced output mode)

[mzso]

Hmm. I thought AV1 would be further along by now. Did an encode with ffmpeg "-c:v libaom-av1 -crf 35 -cpu-used 3 -tiles 4x3 output.mkv" The output was almost the same size as libx264 -superfast at crf 18. But it took a lot longer and it looks worse.

[Blue_MiSfit]

Something is going wrong then. libaom and svt-av1 absolutely crush x264 at equivalent bitrates as long as you're not using the fastest possible speed presets.

[Gravitator]

What settings does Youtube use for encoding for AV1?

[benwaggoner]

Originally Posted by Gravitator

What settings does Youtube use for encoding for AV1?

I am sure they are heavily biased toward speed over quality. Has anyone tried a bitstream analyzer?

[GTPVHD]

https://www.intel.com/content/www/us...ilestones.html

Arctic Sound-M – Arctic Sound-M brings the industry’s first hardware-based AV1 encoder into a GPU to provide 30% bandwidth improvement and includes the industry’s only open-sourced media solution. The media and analytics supercomputer enables leadership transcode quality, streaming density and cloud gaming. Arctic-Sound M is sampling to customers and will ship by mid-2022.

https://www.anandtech.com/show/17266...e-av1-encoding

Interestingly, this also implies that hardware AV1 encoding is a native feature of (at least) the large Alchemist die. Though given the potential value of the first hardware AV1 encoder, it remains to be seen whether Intel will enable it on their consumer Arc cards, or leave it restricted to their server card.

https://www.anandtech.com/show/17264...phics-chiplets

Looks like Intel Meteor Lake and later CPUs will get AV1 hardware encoder also since they have Intel Arc Tile GPU.

[Losko]

AOMenc 3.3.0 released, with nice speed improvements

https://www.phoronix.com/scan.php?pa...V1-3.3-Encoder

[Yups]

Originally Posted by GTPVHD

https://www.intel.com/content/www/us...ilestones.html



https://www.anandtech.com/show/17266...e-av1-encoding



https://www.anandtech.com/show/17264...phics-chiplets

Looks like Intel Meteor Lake and later CPUs will get AV1 hardware encoder also since they have Intel Arc Tile GPU.

Consumer cards could also come with AV1 encoding support, it's known from the driver. However Intel could disable it artificially for the consumer DG2 similar to the AVX512 blocking with latest bios updates.

[benwaggoner]

Originally Posted by GTPVHD

Looks like Intel Meteor Lake and later CPUs will get AV1 hardware encoder also since they have Intel Arc Tile GPU.

Promising. And Intel's never kept codec features to higher-end chips IIRC. The problem has been more the reverse; for years there were no GPUs in high-end Xeons so everything had to be done in software.

[GTPVHD]

https://www.intel.com/content/www/us...rc-events.html

Join us on March 30th at 8 A.M. pacific time to see Intel Arc graphics take center stage and get a first look at our new discrete graphics for laptops.

Guess we'll know if the smaller Intel Arc Alchemist GPU have AV1 hardware encoder or not soon.

[GTPVHD]

https://twitter.com/IntelGraphics/st...86521953415179
https://www.intel.com/content/www/us...s/creator.html

Intel Arc is the world’s first GPU with hardware-accelerated encoding for AV1, the next-gen and royalty-free video codec. With the largest online video platforms adopting AV1 as the future of video, be ready to create, stream, share, and consume high quality AV1 content, up to 8K resolution, with new levels of performance and efficiency. Get equipped for the future of media with Intel Arc graphics.

Intel confirms AV1 hardware encoder in Intel Arc Alchemist GPUs.

[Yups]

It's a pure fixed function AV1 engine and not just a hybrid, this is good news.


Here is a game stream demo versus H264.

https://youtu.be/MvlKaUdfkyo

[rin]

Its a pure fixed function of AV1 engine This is very good news to me, The stream of demo versus h264 is on youtube.
https://www.youtube.com/watch?v=MvlKaUdfkyo

[LigH]

New uploads: (MSYS2; MinGW32 / MinGW64: GCC 12.1.0)

AOM v3.3.0-685-g664f04d74

rav1e 0.5.0-gd1d1dbe1

dav1d 1.0.0-24-gebeaac6

avif 0.10.1_a2e109f
dav1d [dec]:1.0.0-24-gebeaac6, aom [enc/dec]:3.3.0-685-g664f04d74, rav1e [enc]:0.5.0 (p20220510-126-gd1d1dbe1)

[GTPVHD]

https://www.intel.com/content/www/us...ble-china.html
https://www.intel.com/content/www/us...raphics/3.html
https://ark.intel.com/content/www/us...-graphics.html

Intel Arc A380 graphics card with AV1 hardware decoder and encoder officially launched.

[Yups]

I found two performance tests versus CPU.



https://www.expreview.com/83796.html



https://youtu.be/8NtGWP6bHeI?t=511