Chroma grain is that grain that looks like color spots, if you get close to the screen you see the pixels are all lighted up in different colors (specially green and red). You can play with setting the Encoder Tune to Grain and it sometimes retains a little better, varies from source to source.Ĭhroma Grain is a problem. Luma grain is the grain that looks like gray/sand color grain and is relatively easy to maintain quality when reencoding. Grainy content does take forever to encode.Īlso, there're two types of grain. You can get away with preset medium for a mini encode but not with any anime That's a guideline I found a while ago, modified a bit to fit my conditions (storage limits and hardware capabilities).ĮDIT: These are for 1080p, 720p or 2160p are different, and even so, depending on quality of the source, CRF values can change. I have infinite storage, a supercomputer, and I want details: Movie-tier dark scene, complex grain/detail:Ĭrf=20, (crf=18 for movies) limit-sao:bframes=8:psy-rd=1.5:psy-rdoq=4:aq-mode=3 Some dark scene, some battle scene (shonen, historical, etc.):Ĭrf=22, bframes=8:psy-rd=1.5:psy-rdoq=2:aq-mode=3 Then choose 1 following to override the default parameters.Ĭrf=22, limit-sao:bframes=8:psy-rd=1:aq-mode=3įlat, slow anime (slice of life, everything is well lit):Ĭrf=23, bframes=8:psy-rd=1:aq-mode=3:aq-strength=0.8:deblock=1,1
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