Quote:
Originally Posted by Sharc
I mentioned these as examples for "dedicated" lossless codecs.
Isn't lossless = lossless? So x265, x264 lossless outperform the others in terms of filesize if this is taken as the performance criterion, as I understand.
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Yeah, it is hard to see how a codec that can do interframe compression wouldn’t beat a intraframe-only codec. HEVC in particular has intraframe prediction and other advanced tools that should squeeze even more bits out.
They aren’t all on even in —preset placebo, though! Using —cu-lossless and —tskip can help improve efficiency and quality of near-lossless encoding. Cu-lossless allows any given CTU to use lossless mode if it is more efficient; real lossless is just using that for the whole frame.