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15th July 2020, 14:54 | #2221 | Link |
German doom9/Gleitz SuMo
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New uploads: (MSYS2; MinGW32 / MinGW64: GCC 10.1.0)
AOM v2.0.0-608-gcae201b6c rav1e 0.3.0 (01052fc / 2020-07-15) dav1d 0.7.1 (1317e61 / 2020-07-15) |
17th July 2020, 13:39 | #2222 | Link |
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Youtube is giving me AV1 videos without changing configuration on a fresh Windows 10 installed in Chrome without login in Youtube on a i5-1035G1 CPU - 499€ Laptop.
Justing clicking on the first 5 videos from the main page. 3 are AV01 at 1080p and the other VP9. |
17th July 2020, 14:01 | #2224 | Link |
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AV01 = AOM (AV1)
The next AV2, would be AV02 in youtube. Also Is normal that Google isn't executing exacly the same version as in the Web. Normal a big company adds small changes to source code for specific Google Platform or backporting fixes. Note: libaom 2.0.0 is nothing related with AV02 is just an improved version ov AV01 encoder. Last edited by marcomsousa; 17th July 2020 at 14:05. |
17th July 2020, 14:14 | #2225 | Link | |
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Since you mentioned AV2. Now that VVC is out. Is there anything shared about the developments of AV2? I remember reading somewhere that Apple was pushing AV2 since they joined AOM late in the game. Sent from my Moto Z3 Play using Tapatalk |
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17th July 2020, 14:22 | #2226 | Link |
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AV2 development has practically only just started, it'll be a while before anything substantial can be said about it.
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LAV Filters - open source ffmpeg based media splitter and decoders |
18th July 2020, 08:52 | #2227 | Link | |
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(Somehow I doubt they'll try something different, like Daala did with lapped transforms) |
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18th July 2020, 22:26 | #2228 | Link | |
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For all the complexity of VVC on the encode side, from everything I've heard it'll still be able to have cheaper, simpler decoders than AV1 can. |
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26th July 2020, 18:47 | #2229 | Link | |
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Honestly, creating another similar (but more complicated) format AV2 seems really pointless at this point. Either create something revolutionary or keep optimizing AV1 encoding/decoding. AVC has been around for many years and will remain for many more. MPEG-2 and ASP didn't die out yet either. |
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26th July 2020, 20:06 | #2230 | Link |
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AV1 will continue to be optimized for the next 5-10 years without changing format.
Changing format is AV2. The development format process will takes 2 to 3 years+5 years for HW decoder+encoder. So developing the new AV2 can be started anytime now. If software patents expired in 20 years, so AV2 can have a lot of old technics. Marco Sousa |
27th July 2020, 02:12 | #2231 | Link | |
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27th July 2020, 15:03 | #2232 | Link | |
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I highly doubt it. I think it's more likely the illusion of familiarity and the blinders that come with it. "Some of this could be because of the momentum of R&D around the traditional stuff." It certainly seems like that alternatives got only limited efforts on them. |
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27th July 2020, 20:47 | #2233 | Link | |
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That said, wavelets sure got a lot of attention for image and motion coding. Good for images, but no one figured out an efficient motion compensation strategy for it. Daala had a lot of really intriguing notions, but the most interesting stuff in it never really got to a promising proof of concept. Sure, maybe with 10 years of 1000 engineers something could be found. Any alternative transforms have to compete with decades of refinement of block-based frequency coding. A lot of promising ideas get figured out how to port into a block-based structure. For example, HEVC's transform skip mode can make anime, graphics, and text way easier to encode at low bitrates and high quality. So new features, like have been seen in VVC and AV1, can get included as tools. Arguably, once you have 64x64 or bigger blocks, you've pretty much got all the advantages of wavelet coding already, within a block based model. And intra-frame prediction brings a lot of the potential value of fractal encoding. One exciting thing (to me at least) about Daala that didn't make it into AV1 was doing frequency-domain prediction, so there was no need to rasterize a frame that wasn't going to get displayed, and dithering didn't need to be included in quantization. It didn't work out for reasons I don't quite recall. |
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29th July 2020, 20:17 | #2234 | Link |
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Hello,
Thank you for your nice comment about wavelets for images (as I have also made a wavelet image codec, called NHW...). You said: "but no one figured out an efficient motion compensation strategy for it". Do you think this is this aspect that prevents organizations such as Alliance for Open Media from starting and supporting a wavelet codec? Cheers, Raphael |
1st August 2020, 11:13 | #2235 | Link | ||
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I still think that *lets, curvelets, ridgelets, etc, could help further reduce still images/I-frames, but all the new prediction modes have really put a huge dent in how residuals look. Quote:
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2nd August 2020, 10:28 | #2236 | Link |
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Hello @foxyshadis,
Hope that I am not trolling too much, I of course agree on the technical side with you and the other impressive reference members here, but I contacted you about Xiph as you seem to know well Monty and this organization. Do you think Xiph can be interested in the NHW Project? Unfortunately I can not have contact with them, and maybe just like Alliance for Open Media, Xiph is not interested in NHW because it does not work for any image resolution? And that's why my submissions at Xiph and AOM are ignored? I thought that NHW could be a good project for Xiph... (that's only my opinion of course), and certainly a better fit than AOM, but maybe Xiph also only supports excellent codecs and they don't estimate that NHW is one of them? Many thanks. Cheers, Raphael |
3rd August 2020, 09:33 | #2238 | Link |
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I did not test Rududu video codec, but I have tested the latest Rududu Image codec (RIC) and it is very good.If I remember correctly, RIC is kind of enhanced and state-of-the-art SPIHT, which is a different technology from NHW.-For the little story, when Rududu author released RIC in march 2008, I was totally blown away by its very impressive results on objective metrics like PSNR and by its very good precision, and then I realized that I could not be at that level of PSNR and precision with NHW, and so then I definitely decided to orientate NHW towards neatness and visual aspect.-
To come back on-topic, yes possibly in the late 90's with JPEG2000, wavelets were the hotness, but frankly since 2001, DCT block-based intra prediction+residual coding is really the main research focus of the industry.Wavelet compression research has been abandoned for years (by industry) actually, the last release of Dirac was in 2008, the last release of Rududu was also in 2008, Snow is around 2008, and most of the main ideas of NHW were also made in 2008... Who believes organizations like AOM could restart wavelet compression technology today? Cheers, Raphael |
7th August 2020, 05:15 | #2240 | Link | |
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They have added 12bit HEVC/VP9 decoding. Also, that SCC of the table means Screen Content Coding and it's a HEVC profile/extension, optimized for screen captured content. It could be used by streaming apps/services like YouTube, Skype, Zoom, Netflix etc but I don't know the real use of this extension. And it's the first time I see this in the supported features of any decoder.
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Win 10 x64 (19042.572) - Core i5-2400 - Radeon RX 470 (20.10.1) HEVC decoding benchmarks H.264 DXVA Benchmarks for all Last edited by NikosD; 7th August 2020 at 05:22. |
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