News for hackers. Stuff that matters.
Re:AVIF support enabled by default in Firefox 86 by contravariant on Saturday January 09, 2021 @07:48PM (#25706949)
Although he does seem to be comparing images at incredibly high compression rates, to the point that the full sized versions don't look anywhere near acceptable (which is subjective I suppose).
Re:AVIF support enabled by default in Firefox 86 by berkut on Saturday January 09, 2021 @08:17PM (#25707264)
Yep, and "quality" isn't always the only control you have, i.e. chroma Sub Sampling is an option for JPEG (and maybe others?) as well, which sometimes has to be played around with in my experience if you really care about high-fidelity JPEGs (i.e. full screen photos).

I really wish something existed (or was even built-in to image format encoders in some way, although I recognise that would arguably be bloat) to "bisect" what the optimum settings are per format without degrading quality based off perceptual pixel differences...

I've written a basic thing myself I use to work out the chroma sub sampling (whether 444 is needed, or if 422 can be used) for JPEG encoding photos, and it can do a fair level of "quality" bisection as well, but it's far from perfect, but still useful.

Re:AVIF support enabled by default in Firefox 86 by jaffathecake on Sunday January 10, 2021 @03:50AM (#25712487)
Some of the examples use subsampling, some don't, depending on if I felt it needed it visually. From memory, I think I disabled subsampling for all the illustration images. Except in WebP where you can't disable it. For WebP I used its "sharp YUV" mode instead.
Re:AVIF support enabled by default in Firefox 86 by BlueTemplar on Sunday January 10, 2021 @12:30PM (#25717005)
There's a use case where JPEG is better, scroll down to "Progressive rendering" :

https://jakearchibald.com/2020/avif-has-landed/

https://jakearchibald.com/c/progressive-5f94067c.mp4