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24th March 2021, 01:26 | #2382 | Link | |
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https://aomedia.googlesource.com/aom/+/v3.0.0
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30th March 2021, 21:20 | #2383 | Link |
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http://downloads.aomedia.org/assets/...-%20Q12021.pdf
NETINT Technologies Joins the Alliance for Open Media https://aomedia.org/press%20releases...or-open-media/ Last edited by Mr_Khyron; 30th March 2021 at 23:50. |
3rd April 2021, 11:28 | #2384 | Link | |
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8th April 2021, 21:52 | #2385 | Link |
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The rumor isn't really new but according to sources from Moore's Law Is Dead, Intels Xe HPG will come with AV1 encoding support.
https://youtu.be/84IV8VmQoY4?t=607 The fps comparison with RTX 3080 is a bit silly, I mean it must be CPU encoding, there is no hardware support from RTX 3080. |
22nd April 2021, 01:12 | #2386 | Link |
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Google supercharges YouTube with a custom video chip
https://www.cnet.com/news/google-sup...om-video-chip/ https://blog.youtube/inside-youtube/...infrastructure https://dl.acm.org/doi/pdf/10.1145/3445814.3446723 |
23rd April 2021, 19:14 | #2387 | Link | |
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Processors like this should be able to deliver better pixels/watt for relatively high bits/pixel, but with complex modern codecs like AV1 and HEVC, I'm doubtful they'll be able to get within 10% the bitrate a good software encoder is capable of for a given visual quality. But I've not deep-dived on their design much yet. |
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24th April 2021, 11:07 | #2388 | Link | |
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Last edited by hajj_3; 28th April 2021 at 07:39. |
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27th April 2021, 18:01 | #2389 | Link | |
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It's interesting to see Google talking about power savings in the cloud, which would be a lot smaller than the added power draw of YouTube's forced software VP9 and AV1 decode. I'm sure MW are being spent globally to decode VP9/AV1 in SW on devices that support H.264/HEVC in hardware. Even 10 extra watts per viewer at YouTube's scale is enormous. |
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27th April 2021, 19:50 | #2390 | Link |
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According to the Cnet article, they have began deployment of the 2nd Gen Argos hw encoder VCU (with AV1 support) in recent months.
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27th April 2021, 20:56 | #2391 | Link | |
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Even if we stick within video codecs, it would seem that corporations behind HEVC not charging for using math that they claim the legal rights to licence would be a more obvious target for anger and activism in this regard. Especially as they're currently pushing 3.5 new competing codecs. Wouldn't it be better for the ice caps if they just adopted AV1? |
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28th April 2021, 00:29 | #2392 | Link | |
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There's been a fair amount of R&D around assisted encoding, using HW encoders for coarse motion estimation, frame type decisions, that sort of thing. MCW saw about a 20-25% speedup in x265 using that, which wasn't really worth it in the end. If the Gen2 processor is better suited to that, perhaps they can combine some higher level algorithmic tuning to get a bigger share of the potential efficiency of codecs. However, the way they've leaned into optimization for memory bandwidth would preclude much low-level tweaking. But maybe a faster hybrid mode as mentioned above? Maybe try encoding each frame different ways on different processors and then synthesize the data for a final pass? |
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28th April 2021, 00:35 | #2393 | Link | ||
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An argument certainly can be made on purely an environmental basis that HEVC and VVC should get much more H.264 like licenses so that Chrome and Firefox could use those codecs and YouTube and Facebook would encode for them. Alas, that is the domain of lawyers and MBAs, and I only get to give them my opinions, not tell them what to do. Last edited by benwaggoner; 10th May 2021 at 21:40. Reason: Fixed quote |
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4th May 2021, 10:04 | #2394 | Link | |
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https://aomedia.googlesource.com/aom...76dca7a837ad4c
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9th May 2021, 09:23 | #2395 | Link |
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SVT-AV1 v0.8.7 released
https://gitlab.com/AOMediaCodec/SVT-AV1/-/releases
[0.8.7] - 2021-05-08 Encoder Feature optimizations: creating new mode decision / encode-decode feature levels allowing better speed / quality trade-off granularity Preset repositioning after adopting new levels Preset 8 achieving similar speed levels to that of x265 medium in the VOD (shot-based encoding) use-case while maintaining quality gains New 1-pass and 2-pass VBR implementation ported from libaom and adapted to the SVT architecture - still a WIP Cleaned up old VBR and CVBR RC code along with the lookahead mechanism associated with them Improvements for TPL algorithm to handle long clips and easy content Added HDR support and color primaries SEI signaling (off by default until integrated with ffmpeg) Memory optimizations, cleaning up data structures to reduce memory usage up to 2x memory reduction in multi-threaded VBR environment Additional AVX2 and AVX512 optimizations Cleaned up unused command line parameters except the config params that are linked to ffmpeg Update user guide and documentation Build and Testing Bug fixes Improve CI coverage Improve Unit Test Coverage Address C vs asm mismatches Fix static analysis warnings / errors |
13th May 2021, 18:48 | #2397 | Link |
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Anyone know anything about this AV1 decoder for Xbox Series S|X? https://www.microsoft.com/en-us/p/av...s/9p13g73d7rmz
The AMD GPU in both the PS5 and Xbox Series has AV1 HW decode in its PC GPU implementations. Have we ever found out whether the HW is there on the new game consoles? |
13th May 2021, 23:00 | #2398 | Link | |
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17th May 2021, 20:24 | #2400 | Link | |
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Both Sony and MS consoles share the base raster/RT/compute µArch of RDNA2, with each having semi custom optimisations of their own + either their own designed video unit, or an iteration of the AMD VideoCoreNext (VCN) block that predates what went into the PC RDNA2 line up of GPU dies. Only VCN3 forwards has this support. That means NV2x currently for AMD, and the upcoming Van Gogh and Rembrandt APUs known to have it from early driver code commits. This is sadly not that surprising as even the AMD Zen3 Cezanne APU launched just this year still lacks HW ASIC support in its VCN block. I would expect any Slim or Pro type mid cycle console variants using new chips to have AV1 support though, that would seem a serious blunder if not. That being said dav1d 0.9 was just released with a massive AVX2 SIMD asm dump for 10+ bpc content, so the current consoles should be more than enough to decode it with 8 Zen2 CPU cores - at least for content like Youtube (or Twitch later) not requiring DRM which is still going to be the majority of AV1 content for some time I think. Facebook and Netflix sponsored most of the big new AVX2 dump - so clearly they have their eyes on using it for their own BW reducing purposes. For Xbox you can currently use Kodi v19 which uses an older dav1d 0.8.x release - but there may well be a Kodi v19.x update to come with the 0.9 release of dav1d somewhere down the road. Last edited by soresu; 17th May 2021 at 20:32. |
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