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3rd May 2016, 15:03 | #41 | Link |
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There was a video about VP10, I think it was linked from a thread here, which probably mostly applies.
https://www.youtube.com/watch?v=gkz1ZvejmEc I've not watched it for a while, but I'm not sure there was anything particularly novel in the Daala sense of trying new things that won't have been patented, just the usual incremental improvements. Last edited by dapperdan; 3rd May 2016 at 15:05. |
5th July 2016, 20:36 | #42 | Link |
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First tests codec, which will be released in March 2017.
http://www.cnx-software.com/2016/07/...te-with-h-265/ I am surprised the wording. The command will encode all y4m files in the directory at 200 kbps up to 500 kbps at a 50 kbps increment. Encoding only uses one core, my machine is powered by AMD FX8350 processor, and you can see encoding is currently very slow well under 0.5 fps for a CIF video (352 x 288 resolution), but that should be expected because VP9 encoding is already slow (its successor is expected to require even more processing power), and first software implementations are usually not optimized for speed, they are just meant to show the encoding works. |
6th July 2016, 00:44 | #43 | Link | |
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* The one exception being VC-1, since that was actually done from the WMV9 decoder porting kit, and thus accidentally was full of real-world features and optimizations . |
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6th July 2016, 07:23 | #45 | Link |
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It's very slow because he use run_tests that use best settings ( like placebo for x264/x265 ) and 1 thread.
He should test with more realistic setting --cpu-used=1 or 2 and add threads -t 4, with that it should be really faster. |
6th July 2016, 18:57 | #46 | Link |
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I made a quick test :
source : Kimono1_1920x1080_24 x264 --preset veryslow --crf 23 : file output 6.38 Mo ( bitrate 5351 kbps ) ssim 0.955018 psnr 41.056804 x265 --preset slow 2 pass : 6.28 Mo ssim 0.960803 psnr 42.029059 x265 --preset slow 2 pass : 6.42 Mo ssim 0.961065 psnr 42.070003 vp9 -cpu-used 1 2 pass : 6.29 mo ssim 0.960090 psnr 41.922800 and for av1 -cpu-used 1 2 pass : 6.43 ssim 0.961722 psnr 42.229238 so only a little better than vp9 and x265 for the moment. |
6th July 2016, 21:20 | #47 | Link | |
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7th July 2016, 04:51 | #48 | Link |
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Maybe an interesting comparison, but ...
I don't know if there are any differences between the VP10 and AV1. Nor do I know what the results seeks by the manufacturer. I don't know ranges of SSIM and PSNR. Could use a graph. I would have also posting links encoders, because I understand that you tested the latest versions. (Next2) https://aomedia-review.googlesource..../status:merged https://chromium-review.googlesource.com/#/q/vp10 PS What puzzles me? New patches codec vp10 aren't included in the codec AV1. Last edited by Jamaika; 7th July 2016 at 05:09. |
7th July 2016, 09:40 | #49 | Link | |
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AreWeCompressedYet shows minor improvements of AV1 when compared to HEVC/VP9 in areas of PSNR/PSNR-HVS/SSIM (FastSSIM seems to be more problematic). Not sure how they are going to achieve a doubling of efficiency when compared to HEVC by 2017 however. |
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7th July 2016, 13:42 | #50 | Link | |
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7th July 2016, 14:08 | #51 | Link |
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I think it's fair to say that AV1 is VP10 at the moment. As tech or patents or coding contributions come from other parties now then it may grow to be something different, but as a starting point it was and mostly still is the libvpx VP10 codebase. At what percentage of code or ideas it stops being VP10 is of course debatable, and they certainly want to be a collaborative project going forward, but yeah, I don't think it's a misleading shorthand to say AV1 is VP10.
Last edited by dapperdan; 7th July 2016 at 14:13. |
7th July 2016, 14:59 | #52 | Link | |
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There was such a suggestion. Codec AOM replaces VP10, Daala, Thor, HEVC. Anyway what for they did to the alliance. VP10 disappears. I see that these are two paths of development, ie said Clare.
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Last edited by Jamaika; 7th July 2016 at 15:25. |
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8th July 2016, 08:53 | #53 | Link |
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Some things from daala and thor is in AV1 AFAICS - mainly the deringing filter (daala) and CLP filters (thor) are and multi-symbol entropy coder from daala (which might be replaced by rANS as it is faster and has similar efficiency) PVQ is still a WIP to integrate into AV1 - which might be quite interesting..
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8th July 2016, 12:16 | #55 | Link | |
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8th July 2016, 12:33 | #56 | Link | |
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If On2/Google has main say in development, they might hamper adoption of stuff from Mozilla/Xiph because NIH mentality. (Well, let's hope such pety things will be kept in check there, but people often tend to behave like that sadly.) |
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8th July 2016, 14:10 | #57 | Link | |
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10th July 2016, 03:48 | #58 | Link | |
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If they want inclusive development this won't happen. If there are two tools that have similar gain they will together decide which one to keep and which to drop (that's why they have regular meetings). IPR and what hardware vendors say would be a big factor in such a decision. |
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12th July 2016, 16:17 | #60 | Link |
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if anyone is interested i have a compiled win64 version here
https://awesome.nwgat.ninja/aomedia/...f841b-win64.7z
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