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The 4K blu-ray this was encoded from is a much better scan, which is of the 35mm master.
I suspect that the previous 1080p blu-ray release was not a scan of the master, just from looking at it. There is far more (and much larger) film grain, as well as less detail, compared to this scan.
Source: 4K UHD-BD
AV1 10-bit yuv420p10le (I wanted to do 444, but my [email protected] all core couldn't decode in the high entropy scenes...)
Opus 192kbit 5.1 JPN
Opus 128kbit 5.1 ENG
THORAnime ASS subs (official BD I think?)
Commands:
ffmpeg -i infile -vcodec libx264 -vf crop=3840:2072:0:44,zscale=t=linear:npl=100,format=gbrpf32le,zscale=p=bt709,tonemap=mobius:desat=0,zscale=t=bt709:m=bt709:r=tv,scale=1920:1036,format=yuv420p10le -sws_flags lanczos -qp 0 -x264opts no-deblock -preset medium -an -threads 12 -g 12000 outfile.mkv
ffmpeg -i infile -vcodec libaom-av1 -lag-in-frames 25 -g 900 -crf 29 -cpu-used 2 -row-mt 0 -b:v 0 -auto-alt-ref 1 -an -strict -2 -denoise-noise-level 25 -pass 1 -f null /dev/null
ffmpeg -i infile -vcodec libaom-av1 -lag-in-frames 25 -g 900 -crf 29 -cpu-used 2 -row-mt 0 -b:v 0 -auto-alt-ref 1 -acodec libopus -af "channelmap=channel_layout=5.1" -b:a:0 192k -b:a:1 128k -strict -2 -denoise-noise-level 25 -pass 2 outfile.mkv
P.S. denoise-noise-level doesn't do what you would expect. AV1 extracts (removes) the noise, models it, then encodes the denoised video for much higher quality(or lower size), then includes the noise model, which AV1 re-adds during playback. Film grain is random after all.
P.P.S. desat=0 and hable is ok, desat=0 and moebius can make super-bright sources a little more colorful(less "pale") than you would expect (ex. Sol's laser)
![[2ndfire]Akira[UHD-BD,1080p,AV1,10bit][38177012]](https://f.0c.mom/no-cover.webp)
