Direct encode of hchcsen’s BDRemux: https://nyaa.si/view/1676769

Video:
AV1 main profile 0 1920x1036@10bit, crf 27
Audio (JPN):
5.1 Remaster Audio - Opus 128kbit
Stereo - Opus 96kbit
Original Audio (mono) - Opus 96kbit
Subs:
ASS - hchcsen

ffmpeg -i [infile] -c:v libsvtav1 -crf 27 -preset 2 -svtav1-params tune=2:film-grain=35:film-grain-denoise=1:enable-overlays=1:scd=1:scm=2:enable-tf=0:lookahead=120:pin=0:lp=16 -g 1440 -map 0 -vf "crop=1920:1036:0:22" -c:a libopus -b:a:0 128k -b:a:1 96k -b:a:2 96k -filter:a:0 "channelmap=channel_layout=5.1" -ac:3 1  -c:s copy -threads 16 [outfile]