Quote:
Originally Posted by dansrfe
yea I've always wondered whether to use --tune grain or --tune film on BluRay sources. What's a good crf value to use on BluRay sources anyway?
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I use CRF 16, but that's only after a 3 way denoising chain -
Code:
TTempsmooth(maxr=7, fp=true, strength=1, lthresh=3, cthresh=4)
SMDegrain(tr=1, thSAD=100,blksize=8,overlap=4)
dfttest(dither=3,sigma=3,sigma2=3,tbsize=3)
LSFMod(defaults="slow",strength=50)
If you were to go that low without any denoising the file would be quite large. With these light denoisers a 2 hour movie usually lands right around 4000kbps at 720p, rounding out to about 4gb total.
Quote:
Originally Posted by Dark Shikari
Comparing quality at different bitrates is pointless.
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Well part of the point was not necessarily quality but how much more bitrate --grain takes in comparison. I will run a 2 pass at a specific bitrate with both tunings and post that as well, because obviously the --tune grain image is using more bitrate (about 500kbps).