Jon Sneyers

Externally, FLIF animations have fully refreshed full frames only. Internally, there are some transformations to optimize that: - DuplicateFrame eliminates frames that are an exact copy of an earlier frame...

Brunsli was originally part of JPEG XL (Annex M indeed), but it was removed to keep the spec simpler, since the regular VarDCT mode (using only 8x8 blocks so not...

Good suggestion! For now you can use https://github.com/FLIF-hub/FLIF/blob/master/tools/apng2flif, but direct support for APNG would indeed be useful.

Has anyone considered using the new HEIF container format for this purpose? It's getting some hype now because of Apple, and using it with a HEVC payload (like BPG) seems...

It is a bit confusing, and the explanation in the manual is probably not very clear. Conceptually, FLIF only has the notion of full frames, that is, when reading input...

JPEG XL does support 1-bit too. It's probably even better for them, since it has JBIG2-style "pattern" features. The current JXL encoder hasn't really been tested or optimized much for...

Sounds like a promising approach indeed. We could do it in a gracefully degrading way (for existing FLIF16 decoders) by making it look like a regular lossy FLIF with just...

I think `-E30` is probably a better default.

The encoder doesn't support TIFF as input format, only PPM/PAM and PNG. You can use ImageMagick to convert your TIFF file to e.g. PPM and separate metadata files. I think...

Maybe try with Exiftool?