AVIF settings explanation

[gendalf]

I've read it supposed to be better than webp, but idk what are those 2 min/max settings and speed?

[xmozg]

The latest version of xnviewmp does not have min/max settings for this format.
And so these settings mean a range of quantization values, lower numbers, higher quality and larger size. The narrower the range, the worse the optimization of different parts of the image depending on the visibility of details. If both values ​​are low, even barely noticeable details will be encoded with increased quality and increased file size.
Speed ​​refers to the efficiency of optimization algorithms. Lower speed, higher picture quality.

[gendalf]

played with various speeds and chroma numbers.
webp seems to compress better for the same quality number, compared to avif 420.

[gendalf]

Also how to make win explorer show thumbnails/previews for avif?
upd: manually typed it into Icaros and it works.

[xmozg]

For thumbnails in Explorer and opening these files in programs from Microsoft and some other (like Directory Opus) you need to install AV1 Video Extension.

webp seems to compress better for the same quality number, compared to avif 420.

Is it possible? Webp should lose in any modes to avif. In this case, jpeg xl will lose with strong compression, and with medium and weak compression it will outperform avif.
Or, by number, do you mean not the compression quality, but the file size after setting the “number” in the compression setting?

[faltonico]

Also how to make win explorer show thumbnails/previews for avif?
upd: manually typed it into Icaros and it works.

I know this is mostly offtopic, but it is kind of crazy the things icaros can make thumbnails out of. I have it do rar, zip and 7z files for manga. It could handle pretty much anything i have thrown at it.