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Old 30th September 2020, 16:11   #2381  |  Link
GTPVHD
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https://github.com/intel/media-drive...l-media-20.3.0

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Enabled AV1 4:2:0 8bit and 10bit decoding for both driver and MSDK, up to 8K video decoding and 16K still picture decoding.
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Old 30th September 2020, 16:42   #2382  |  Link
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On windows there is no AV1 decoding support in the driver at the moment, the first public driver 27.20.100.8778 don't support it.
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Old 30th September 2020, 19:56   #2383  |  Link
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Twitch has a 120fps/1440p 8mb/s av1 vod on this channel
https://www.twitch.tv/videos/637388605
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Old 30th September 2020, 20:48   #2384  |  Link
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Amlogic S905X4 android tv 10 boxes available October 30th. (which can hardware decode AV1): https://www.mecoolonline.com/collect...m6#MainContent

Last edited by hajj_3; 30th September 2020 at 21:47.
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Old 3rd October 2020, 15:37   #2385  |  Link
GTPVHD
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https://www.pcworld.com/article/3576...yzen-4000.html

https://images.idgesg.net/images/art...59833-orig.jpg

AV1 hardware decoding works fine, not sure why Computerbase couldn't get it to work.

https://www.computerbase.de/2020-09/...beschleunigung
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Old 3rd October 2020, 16:22   #2386  |  Link
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https://blog.cloudflare.com/generate...mage-resizing/
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Old 3rd October 2020, 16:41   #2387  |  Link
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What's the die size of an AV1 hardware decoder?
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Old 4th October 2020, 00:24   #2388  |  Link
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Originally Posted by GTPVHD View Post

They might have used the launch review driver which is older than the public driver but supports AV1 for some reason. Or it could have been a specific Google Chrome/VLC issue, PC World didn't use Chrome/VLC. But of course may be Computerbase did something wrong, not sure.
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Old 7th October 2020, 21:03   #2389  |  Link
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GIMP 2.10.22 can now import and export .AVIF files.
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Old 8th October 2020, 01:00   #2390  |  Link
benwaggoner
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What's the die size of an AV1 hardware decoder?
I've not seen any hard numbers, but from what I've heard from insiders, it's relatively quite large. Bigger than estimates for VVC's decoders, and quite a bit bigger than HEVC and likely EVC.

This is a probable driver for why HW AV1 decode has been slow coming for mobile devices. Until it's in the Qualcomm 400 series SoC, it won't be on track for becoming universal.

Hopefully someone here has more specifics.
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Old 8th October 2020, 07:44   #2391  |  Link
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May the patent-free algorithms be more complex in machine code form?
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Old 10th October 2020, 09:00   #2392  |  Link
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https://techcommunity.microsoft.com/...0/ba-p/1765451
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Old 14th October 2020, 21:18   #2393  |  Link
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Originally Posted by hajj_3 View Post
Amlogic S905X4 android tv 10 boxes available October 30th. (which can hardware decode AV1): https://www.mecoolonline.com/collect...m6#MainContent
Noice.

I had hopes that Chromecast 4 would use that chip but alas it only has the S905D3.

With luck the next Fire TV Stick 4K model will use a similar chip to the S905X4.
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Old 16th October 2020, 08:47   #2394  |  Link
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https://developer.nvidia.com/nvidia-video-codec-sdk
https://developer.nvidia.com/nvidia-...c-sdk/download
https://developer.nvidia.com/video-e...ort-matrix-new

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What's new in Video Codec SDK 11

AV1 Main profile decoding up to level 6.0x
Decoding Histogram collection for AV1
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Old 17th October 2020, 14:37   #2395  |  Link
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Are there any AOM developers here? It's like talking to a wall...
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Old 19th October 2020, 05:12   #2396  |  Link
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There seems to be an increase in AV1 availability on Youtube these last days... where until yesterday I rarely bumped into an AV1 enabled video, today I found a lot by simply watching the channels I usually watch. Maybe it's replacing VP9 sooner than we thought?
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Old 19th October 2020, 05:45   #2397  |  Link
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Probably due to the increased availability of hardware decoders.

I expect Netflix to follow the trend of AV1 stream availability due to the quality per bandwidth gain.
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Old 19th October 2020, 18:09   #2398  |  Link
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YouTube's AV1 encodes are even worse than their VP9 encodes when it comes to grain, unfortunately...
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Old 19th October 2020, 18:15   #2399  |  Link
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Probably due to the increased availability of hardware decoders.

I expect Netflix to follow the trend of AV1 stream availability due to the quality per bandwidth gain.
Unlike YouTube, Netflix has premium content, much or all of which has DRM requirements. AV1's gains versus HEVC aren't that big at best, so it's the gains versus H.264 that's the real game changer, and the only material platforms that have AV1 but can't use HEVC are Chrome and Firefox (pretty much all current Android phones have HW HEVC decode, just not from Chrome). Premium content also has a smaller usage share of browsers versus apps/TVs/streaming media device.

YouTube also has much lower quality expectations than premium content, so they can get away with consistently suboptimal encoding. One people are paying for a service or content, their expectations go way higher. The general expectation is to not have any distracting artifacts. When someone is paying extra to subscribe to or buy UHD or HDR content, expectations go even higher.

YouTube being free can cut a whole lot of corners. Pretty much all video game footage on YouTube has painful artifacts, for example. Encoding AV1 at high-quality while at low enough bitrates to justify adding another encoding target is slow. If one's willing to spend that amount of time to make AV1 look good, one could also do x264 --preset placebo and x265 --preset veryslow.

One of the biggest AV1 features that was supposed to save bits versus H.264 and HEVC was its film grain modeling. But that only works for moderate degrees of grain. With the really heavy

So, YouTube is pretty much the ideal AV1 platform for the moment, as it targets lower quality SW decode without DRM. It's utility for premium content is a lot lower for the moment due to lack of HW DRM, broader availability of HEVC, and high quality bar.

Obviously trends are going in the right direction, as all the major CPU companies have announced AV1 HW decode support and AV1 quality-at-perf-at-bitrate has improved enormously in the last 12 months. But we're still several years away from having even 50% of PCs having HW AV1 support.

A ROI justification for AV1 would be very hard to make right now. I imagine YouTube is spending far more to encode and store AV1 than they are saving in bandwidth at this point; it's not like they can stop encoding and storing the H.264 streams anytime soon.
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Old 19th October 2020, 18:51   #2400  |  Link
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I've not investigated it myself yet, but I did see someone complaining recently that new Youtube videos were VP9 and AV1 only, not H.264

Dont know if that's related to Apple rolling out VP9. Or if its possibly just a change in which one gets encoded first. But we must be pretty close to Youtube not having to bother with H.264 anymore.

They claim to no longer support IE11 and push people towards chrome. The fraction of people who can't view VP9 must be pretty small and shrinking.
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