[Feature] Support AVIF

[wenerme]

Is your feature request related to a problem? Please describe.

Using avif can reduce the storage usage

Describe the solution you'd like

• https://github.com/Kagami/go-avif seems promising

need to enable cgo, need libaom

Describe alternatives you've considered

Additional context

• https://github.com/stashapp/stash/pull/1228

Some compares

Before

After

avifenc -j 12 --min 0 --max 63 -a end-usage=q -a cq-level=18 -a tune=ssim

[ghost]

Stash already uses cgo, but including new libraries is a pain in the ass. If #1655 is merged we should be able to use ffmpeg/libvips to support avif though.

[wenerme]

Thanks, introducing vips would be better, will watch that pr

[yoshnopa]

The implementation of #1655 is finally done, and not only is there an external library for avif, ffmpeg supports it too since Version 5.1 I would also love to see support, right now I cant even hack a solution together because the scan fails, I assume at the DecodeConfig function. This actually was working before, I have added webm files that way before the commit without the scan failing...

[kingvall]

Any advancement on this subject ? My disk space want this feature a lot :/

[DogmaDragon]

Not sure how these compare to https://github.com/Kagami/go-avif, but there are several decoders in Go now.

• https://github.com/klippa-app/go-libheif
• https://github.com/gen2brain/avif / https://pkg.go.dev/github.com/gen2brain/avif (uses purego)