Since I managed to get the Sex and the City boxset for a bargain price, here's what some testing produces. The idea was not to be transparent since the Blu-ray isn't great, but for it to be 'close enough' at a much reduced file size.
I'm curious if anyone can tell which is which - it should be obvious. This is was of the worst examples I could find (in terms of quality). Since the grain/noise is 'bigger' on this, I'm using --aq-mode 3 which seems to work better. For finer grain, AQ 1 (or disabled) seems the best.
One is taken from the Blu-ray disc and is just over 6.31GB at 1920*1080. The other is the x265 encode and is 1.40GB at 1440*1080 (screenshots using spline36 to resize to 1920*1080). The screenshot from the encoded file is a b-frame.
Quote:
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--crf 23 --preset slow --output-depth 10 --profile main10 --rd 5 --psy-rd 2.45 --psy-rdoq 3 --rskip 2 --no-rect --aq-mode 3 --aq-strength 0.7 --nr-inter 75 --ipratio 1.35 --pbratio 1.25 --subme 6 --bframes 8 --rc-lookahead 120 --deblock -4:-4 --no-sao --no-strong-intra-smoothing
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