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CUTree granularity depends on CU depth recursion. --rskip 0 or 2 reduces onion effect. More early exits from CU recursion = bigger CUs = higher chances of wrong CU propagation and artifacts in motion.
x265 RDO loves to skip blocks, and CUTree artifacts are a consequence of this. Decreasing max-merge also helps, reducing artifacts and skipped blocks. Sometimes even setting bframes=0 decrease artifacts in motion.
Last edited by fauxreaper; 10th June 2020 at 23:29.
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