WebP: Missing features

[brianpopow]

Description

This is a tracking issue for missing webp features.
The following features for webp are still missing.

• Decode animated webp images. done with Add support for decoding webp images with animations #1985
• ~Encode animated webp images.
• Decode and store XMP profile. done with Support for XMP metadata #1918
• Encode Alpha channel of Lossy images with the lossless encoder and store it in ALPH chunk. done in Add support for encoding lossy webp images with alpha channels #1971

Any help from the community would be highly appreciated.

[JimBobSquarePants]

@bytehydrant Do you still have your fork with the in-progress animation support?

We're in a good place now to continue working against. #121 (comment)

[AaFortner]

@JimBobSquarePants, sorry for the (yikes) 3-month delay in response. Apparently, I had notifications turned off and didn't see this 'til just now. Yeah, the fork linked from my original post is still there. I've not touched it since then.

[JimBobSquarePants]

No worries @bytehydrant , Thanks for getting back to me.

@brianpopow has recently opened a PR for supporting decoding animated Webp in #1985 It's be really useful to us if you could cast an eye over that code and do a review. Thanks!