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30th October 2020, 21:20 | #2322 | Link |
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As Ice Lake is now shipping and we're getting some results from it, I've started a new Sticky to cover hardware AV1 decoding. As usage ramps up, having a single AV1 thread won't be practical before long.
https://forum.doom9.org/showthread.php?t=182011 Last edited by benwaggoner; 30th October 2020 at 21:21. Reason: Added URL |
30th October 2020, 21:37 | #2323 | Link | |
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The GPU shader/CU microarchitecture and the VCN encoder/decoder architecture are not fused to each other from what I can gather about it, especially as it has been said that the design of at least one console SoC was already set in stone 2 years ago when AV1 had only just become standardised. Having said that both consoles do have an 8 core CPU that could easily handle 4K24p for 8 bit content using dav1d. Sadly davi1d still has not so much as a lick of 10/12/16 bit SIMD assembly for AVX2 or SSSE3. My Zen1 based R7 1700 can barely manage some 10 bit 4K24p clips without skipping frames, but the Zen2 based CPU in the new consoles should fair a bit better, though I doubt it could even come close to managing 4K60p unless either Sony or Microsoft has made their own decoder with optimised 10 bit SIMD assembly (which itself is not a great stretch of imagination considering their massive resources). Last edited by soresu; 30th October 2020 at 21:41. |
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30th October 2020, 22:23 | #2324 | Link | |
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1st November 2020, 13:43 | #2326 | Link | ||
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I have to add that according to Notebookcheck Alder Lake will support AV1 accelerated encode and as we know it's still based on Xe LP. On a further note in the Intel graphics driver since a month there is a file called "Intel Hybrid AV1 Encoder MFT". Quote:
Last edited by Yups; 1st November 2020 at 18:21. |
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10th November 2020, 00:28 | #2327 | Link |
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Amlogic S905X4 Android TV & RDK developer kit ships with ATSC, DVB, or ISDB tuners
Video Decoding AV1 MP-10 L5.1 up to 4Kx2K @ 60fps https://www.cnx-software.com/2020/11...r-isdb-tuners/ |
17th November 2020, 09:24 | #2328 | Link |
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New uploads: (MSYS2; MinGW32 / MinGW64: GCC 10.2.0)
AOM v2.0.0-1023-gd198b8e9f rav1e 0.4.0-alpha (9569901a / 2020-11-16) dav1d 0.7.1 (ffd052b / 2020-11-16) avif 0.8.3-bf58fe7 dav1d [dec]:0.7.1, aom [enc/dec]:2.0.0-1020-geda52bb92, rav1e [enc]:0.4.0-alpha (p20201110-4-g9569901a) Last edited by LigH; 17th November 2020 at 10:36. |
25th November 2020, 23:16 | #2331 | Link | |
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Link here to the repo on googlesource. Last edited by soresu; 25th November 2020 at 23:40. |
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2nd December 2020, 17:02 | #2334 | Link |
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Qualcomm announced their new snapdragon 888 today, it is the new name for the snapdragon 875. Unfortunately it doesn't support hardware decoding of AV1
https://www.anandtech.com/show/16271...88-deep-dive/4 https://www.qualcomm.com/news/releas...obile-platform Last edited by hajj_3; 2nd December 2020 at 17:05. |
3rd December 2020, 02:00 | #2335 | Link | |
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Given Qualcomm's market share, this is really going to limit the utility of AV1 in mobile until 2022 at the earliest. Especially for premium content with HW DRM requirements. And it was really at the low bitrates used in mobile where AV1's potential efficiency improvements were the most promising and relevant. For 2021, I have a hard time seeing all that much value in doing AV1 other than for targeting Firefox or Chrome, which artificially block the use of HEVC HW decoders available to the underlying system. The Chromium/WebKit derived Edge and Safari can play HEVC content just fine. Switching from H.264 to AV1 clearly can offer big efficiency/quality improvements. But is adding a whole new codec any easier than asking users to use the default browser or a native Windows/Mac app? It's not like H.264 can be deprecated yet. For everywhere but browsers, HEVC support is pretty universal, and I've yet to see compelling demonstrations of big-enough to bother improvements going from HEVC-to-AV1. HEVC can look pretty darn good given as much encoding time as AV1. Film grain removal/parameterization/synthesis is a very promising feature for some classes of content, but there isn't production-grade robust tooling available to even really estimate the value of it, let alone use it by default in high-volume content publishing. If AV1 misses 2021, 2022+ is quite likely will have competition from VVC and EVC. |
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3rd December 2020, 08:55 | #2336 | Link | |
Artem S. Tashkinov
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Qualcomm often adds new codecs in their lower tier SoCs, so I guess 7XX/6XX/5XX/4XX/whatever SoC which they will release next year will support HW AV1 decoding. |
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3rd December 2020, 11:38 | #2339 | Link |
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I think you're onto to something. Because dragging its feet like they clearly did this time. Not only they are creating an opportunity to position EVC against AV1. But also as a "reasonable alternative" to VVC when time comes.
Let's see if Google will play hardball with them. What I'm about to post is from last April. https://www.axios.com/scoop-google-r...9cf68908c.html Sent from my Moto Z3 Play using Tapatalk Last edited by hbbs; 3rd December 2020 at 11:41. |
3rd December 2020, 12:01 | #2340 | Link | |
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Especially when there is already far better SW decoding for AV1 than VP9 had at the equivalent time from release, coupled with far more performant mobile CPU cores to decode it with - Apple aside the best ARM core at the time was A57 at around 2 Ghz, now we have X1 at around 2.84 Ghz which has to be more than 3x faster at least. I imagine that Qualcomm didn't want to support VP9 either to begin with, but it eventually ended up in there as will AV1 in good time - whether that actually happens before AV2 is released is a different story. It's also worth noting that for all Qualcomm's market dominance elsewhere, China and India's market will probably be populated with many handsets that use Mediatek SoC's that do support AV1 - and their combined populations/potential market are not something to sniff at for sure. |
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