I did not kept track of every experiment, just saying that if you do make a new opcode in QOI that encode a predictor with a few bits + a few bits of diff, then

I did not kept track of every experiment, just saying that if you do make a new opcode in QOI that encode a predictor with a few bits + a few bits of diff, then it's hard to make an improvement at all. It's easier if you remove the 8-bit boundaries constraint. > And can you link the other QOI modification you mentioned? https://github.com/nigeltao/qoi2-bikeshed/issues/34 https://github.com/nigeltao/qoi2-bikeshed/issues/34 then adopted by virtually all QOI-inspired codecs.