Ah, an accusation of misquoting. I actually quoted your exact words minus "is" and "it supports".
I think we disagree on the degree of flexibility, for sure.
A cap on layers (under user/browser) absolutely makes sense, but 4 at the format level is quite limiting, especially if you want to spend some of them on salient regions.
I agree that's possible, but not that it's efficient. You'd waste a few KiB on encoding skip blocks - AVIF layers represent the whole image, whereas JPEG XL can efficiently encode and update at group level.
How flexible did Jake find AVIF progressive in 2025? [1]
"it seems pretty limited. Only particular scaling values are allowed, and 1/8 is the smallest. Supposedly, additional layers are possible[..], but whenever I tried this, the encoder would error out, or explode the file size to ~400 kB, even at lowest quality. I guess that's why it's marked 'experimental'."
> Intermediate passes in AVIF can semantically be different from the final pass
Also true of JPEG XL - scans are additive.
[1]: https://jakearchibald.com/2025/present-and-future-of-progres...
I think we disagree on the degree of flexibility, for sure.
A cap on layers (under user/browser) absolutely makes sense, but 4 at the format level is quite limiting, especially if you want to spend some of them on salient regions.
I agree that's possible, but not that it's efficient. You'd waste a few KiB on encoding skip blocks - AVIF layers represent the whole image, whereas JPEG XL can efficiently encode and update at group level.
How flexible did Jake find AVIF progressive in 2025? [1]
"it seems pretty limited. Only particular scaling values are allowed, and 1/8 is the smallest. Supposedly, additional layers are possible[..], but whenever I tried this, the encoder would error out, or explode the file size to ~400 kB, even at lowest quality. I guess that's why it's marked 'experimental'."
> Intermediate passes in AVIF can semantically be different from the final pass
Also true of JPEG XL - scans are additive.
[1]: https://jakearchibald.com/2025/present-and-future-of-progres...