Feature request: animated AVIF

[routehero]

Animated WEBP is awesome!

It would also be awesome to have animated AVIF!

In specific, the automatic conversion of animated GIF to webp or avif.

[DarthSim]

Hey @routehero!

It doesn't look like browsers have proper support for animated AVIFs nowadays. The only browser that properly plays AVIF animations is Safari. Chrome and Firefox seem to treat them like videos (which they honestly are) and play only a single loop.

[dbackeus]

As of todays versions, both Chrome and Safari appear to be looping animated AVIF correctly, checked via the example on this site: https://codecalamity.com/animated-avif-is-finally-coming-to-firefox/

(note that it's no longer necessary to explicitly enable the animation support in Firefox as stated in the article)

[DarthSim]

That's interesting. The samples from https://colinbendell.github.io/webperf/animated-gif-decode/avif.html are still played just once in Firefox and Chrome.

[dbackeus]

I believe it might be down to parameters used when encoding the image. Not my area of expertise but it's what I gather from eg. AOMediaCodec/libavif#1204