Very interesting, thanks for building/sharing (I imagine you are the author of this page?). Questions I would have: a. Is it possible to dig out the exact cli command used for each of this encodings? b. With libavif, did you test film-grain-test and what are your findings if any? c. With libavif, did you test denoise-noise-level and what are your findings if any? Of course I have no wish to put you into any homework mode, so feel free to ignore this.