Encode: 851 kb/s, libaom 1.0.0-969-gfe996504f 10bit, 1080p
Source (Jap): https://nyaa.si/view/1036108
Source (Eng): https://nyaa.si/view/1096360
Encode: 292 kb/s (Jap), 282 kb/s (Eng), libopus 1.3, 5.1
Signs & Songs: CherryBlossomsDream from https://nyaa.si/view/1096360
Full Subtitles: CherryBlossomsDream from https://nyaa.si/view/1096360
This is to be considered a tech demo for the new codecs.
The objective of this release is threefold:
1) examine implications of using new codecs, in particular AV1/libaom, in an encoding workflow
2) examine the potential gains deriving from doing so
3) fine-tune encoding parameters to use for future encodes
Point 1 has been achieved on my end by structuring a personal workflow and gathering encoding times
Point 2 asseses how much we have saved using this codec, based on subjective quality evaluations; in short, evaluate the net positives
Point 3 is similar to point 2, but this time around we avaluate the net negatives: which scenes look bad?
Starting from point 3 some test cases can be isolated and used to tweak encoding parameters and evaluate costs and benefits of doing so.
There's going to be a writeup or something on https://reddit.com/r/AV1 where I'd also like to hear the opinion of anybody who doesn't want to comment here on Nyaa for whatever reason.
And now a word about decoding performance:
AV1 is a new codec. Therefore, the decoders are still getting stuff in working order and playback performance is going up by the day.
I asked to somebody who understands hardware far better than I do to draft up some minimum requirements for fast motion, hard-to-decode scenes with the software available right now.
Thanks to Nintendo Maniac 64 for his effort and time!
Software: MPC-HC v1.8.3 x64 (with built-in LAVFilters v0.73) or newer
________CPUs that are just too slow________
Any Core 2 Duo (even 45nm Wolfdale would need ~6.5GHz)
Any CPU lacking SSE 4.1 (most notably Phenom II, Athlon II, 65nm Conroe-based Core 2 Duo/Quad)
Low-power architectures (Intel Atom, AMD Jaguar/Puma, any VIA CPU)
Any Sandy/Ivy Bridge Pentium (2c/2t; would need overclocking but that's unsupported)
Any mobile Sandy Bridge i3 (2c/4t; clockrates just too low)
Any mobile Haswell Pentium (2c/2t; again clockrates just too low)
Any mobile AMD that predates Zen (FX, A-series)
Any AMD dual core that predates Zen (A6, A4, Athlon X2)
________CPUs that likely require overclocking________
[45nm Wolfdale] Core 2 Quad; overclocked @ ~4.2GHz
[Westmere 2c/2t] Pentium; overclocked @ ~4.4GHz
[Westmere 2c/4t] (1st gen) Core i3 / i5; overclocked @ ~3.8GHz
[Nehalem 4c/4t] (1st gen) Core i5; overclocked @ ~3.0GHz
________CPUs that should be fine as-is at stock clockrates________
(1st gen) Core i7 870 / 940 / Xeon X3470 (4c/8t Nehalem @ 2.93GHz)
Pentium G3250 (2c/2t Haswell @ 3.2GHz)
(4th gen) Core i3 4340TE (2c/4t Haswell @ 2.6GHz)
(4th gen) Core i5 4670T (4c/4t Haswell @ 2.3GHz)
(4th gen) Core i7 4702HQ (4c/8t Haswell @ 2.2GHz)
Anything based on AMD Zen (mobile and desktop Ryzen, Athlon 200GE, etc)