[Valenciano] Kimetsu no Yaiba Yuukaku-hen - 03 [1080p][AV1 10 bit][Multi-Sub][Opus]
Source: [Erai-raws]
Encoder used: SVT-AV1
- Kimetsu no Yaiba Yuukaku-hen - 03 [1080p][AV1 10 bit][Multi-Sub][Opus].mkv (391.6 MiB)
@chrnodroid
Well it depends on the episode, but obviously I'm not using AV1 to its fullest potential. I began tinkering with it barely 2 weeks ago and I'm still doing some testing to see what parameters to use to get a decent quality. In theory AV1 is 30% more efficient than HEVC, but there are multiple encoders I can use plus getting to understand how the CRF values and presets affect the quality is something I haven't fully grasped yet, then I have to understand how to play with parameters to reach that potential.
So I decided to go very conservative and use a lower CRF than I had planned to ensure that the quality is good enough, in the future I'd expect a chapter like this to be around 300 MB or less. It already is smaller than the encodes in HEVC though even if itsn't by much.
Also the HEVC encoders have a few more years of polishing than AV1. I decided to release in AV1 because I think right now it has a good enough encoding speed plus it already has gains in terms of efficiency in comparison with HEVC, and since not very many people were encoding in AV1 I decided to jump into it so more people might take it into consideration.
What encoding settings are you using for SVT-AV1 BTW?
@OpusMaxE
As of now I'm not changing any parameters other than CRF and the preset. I'm currently using CRF 24 and preset 4, I think I can go as high as CRF 30 without losing apparent visual quality but I'm still testing that.
BTW tomorrow I'll release the remaining chapters and the new one. I'm trying CRF 30 with the new one and if it looks good I'll upload it, so hopefully by tomorrow at 9AM UTC I should have it uploaded.
good. if you want to improve quality and efficiency nicely, here's the command I use for encoding (it is from a bluesword guide, seems to know a lot about av1) https://reddit.com/r/AV1/comments/s04lcp/what_are_best_settings_for_grain/hs10yoa/
you should also update to the latest svt-av1 is possible: SvtAv1EncApp --rc 0 --crf XXX --preset 4 --keyint 240 --input-depth 10 --enable-overlays 1 --enable-tf 0
the most important one is keyint 240, since svt-av1 has way too low max keyint by default, which hurts efficiency a lot input-depth 10 is for 10-bit enable-overlays 1 activates frame overlays, more efficient enable-tf 0 disables temporal filtering, helps with detail retention
Thank you for your input, I was doing this with nmkoder (using av1an) and it was using the keyint parameter. I'll take a look into it, thanks.
Almost 400 MB per episode for 1080p it does not have sense for AV1, you can reach almost the same quality with H265. You have to reduce the bitrate, a proper AV1 anime episode is under 300 MB per episode, 250 MB is the sweet spot.