[joedrew]

Honestly, animated GIF (like all other image formats) is a terrible format for video-style stuff. It's fine for line art (well, sort of fine, anyways), but if you actually using it for video you really should be using <video>, because it takes into account temporal information. (gfycat is a service based around this already.)

It might be possible to do an APNG-style backwards-compatible animated JPEG, but it'll still be worse at it than video formats will be.