As far as I know CRF 0 is NOT lossless, only -q 0 is!
I always used a fast or faster preset and --tune fastdecode + mp4 for my lossess encodes. (you need to remux a mkv produced by x264 as it doesn't have a proper index --> seeking means read the whole file then)
Last edited by ChaosKing; 18th April 2019 at 17:10.
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