allow video stickers

[LuckyTurtleDev]

need to convert webm to webp

[LuckyTurtleDev]

This should be possible with the matroska-demuxer and the image crate. Alternative instead of image the webp-animation can be used to avoid hassle with c dependencys (lotticonf and image use both libwebp).

@msrd0 what was the advance of the webp-animation over the image crate?

[msrd0]

Iirc, at the time of choosing that library, the image crate did not support animated webp. no idea if this has changed since then.

[msrd0]

And lottieconv uses webp-animation, not libwebp

[LuckyTurtleDev]

And lottieconv uses webp-animation, not libwebp

but web-animation use libwebp-sys2

[msrd0]

Nvm, webp-animation also relies on the C library, so it looks like we cannot avoid the c dependency. Also we will always have a dependency on the rlottie C library.

[LuckyTurtleDev]

looks like the image crate is currently working on a pure rust webp decoder. see image-rs/image#1984

[LuckyTurtleDev]

Feature will be available at the next release

Thanks @msrd0 for impl this