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Old 22nd January 2020, 19:32   #2081  |  Link
paul97
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https://www.reddit.com/r/AV1/comment...est_av1_build/
I asked the question on Reddit some months ago. Here it is.
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Old 22nd January 2020, 19:38   #2082  |  Link
nakTT
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Quote:
Originally Posted by paul97 View Post
https://www.reddit.com/r/AV1/comment...est_av1_build/
I asked the question on Reddit some months ago. Here it is.
Thanks for the reply.

I'm starting the encoding process now.

Thanks again.
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Old 22nd January 2020, 21:39   #2083  |  Link
paul97
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You're welcome.
Rav1e has still 80% 120% 340% difference in quality/bitrate in videos on arewecompressed.yet AWCY. A site that codec developers use to test. SVT is too far from libaom as encoder if you see Mrsmilingwolf's user test on Reddit or on Doom9 like comparable to VP9 a bit not better. I don't know if he tests with anime or like action.

Also FFmpeg has included a build of encoders (Libaom) which you check the readme file in the archive (.zip) or in lower section "Other Downloads" by clicking Readme to see which version it is. Handbrake GUI doesn't support the encoding because it's too slow and AV1 support it's only in beta.
But it supports dav1d (Videolan) decoding, only 8bit is completed on general SIMD, 10 bit lacks support, so it runs without SIMD instructions.
If you use a GUI like Hybrid other than ffmpeg, to encode with libaom you will need aomenc.exe.
Artificial noise isn't possible with a GUI, you need ffmpeg and use libaom.

Last edited by paul97; 22nd January 2020 at 21:53.
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Old 23rd January 2020, 00:47   #2084  |  Link
benwaggoner
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Originally Posted by paul97 View Post
You're welcome.
Rav1e has still 80% 120% 340% difference in quality/bitrate in videos on arewecompressed.yet AWCY. A site that codec developers use to test.
What do those percentages mean specifically?

Quote:
SVT is too far from libaom as encoder if you see Mrsmilingwolf's user test on Reddit or on Doom9 like comparable to VP9 a bit not better. I don't know if he tests with anime or like action.
Given the configurability of SVT-AV1 in terms of quality/perf and tuning, it's hard to know what to make of encoder versus encoder comparisons. There are literally dozens of values that could impact quality. It would be more useful to compare quality at known best parameters, or quality at same bitrate and encoding time on a given system config.

It seems that there should be scenarios and highly multicore systems where SVT-AV1 would beat libaom in quality @ bitrate @ perf, just because it would have so many more MIPS/pixel available.
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