[timvisee]

Rocking the latest Nightly (93.0a1 2021-08-15) on Linux, which has AVIF enabled by default. Maybe the implementation is broken.

[extra88]

You're running not-even-beta software so it not working is the most likely explanation.

The .avif files do load in Chrome. I found them to be noticeably blurrier than the .jpg so I think they overdid it on the compress. It makes the site look more like Amazon Prime Video than Netflix.