Animated GIFs the Hard Way
Doesn't GIF already have a differential animation mode since you can set unchanged pixels in each frame to transparent? e.g. <a href="http://www.imagemagick.org/Usage/anim_opt/#opt_trans" rel="nofollow">http://www.imagemagick.org/Usage/anim_opt/#opt_trans</a><p>With PNG24 you'd at least get better colour depth. In which case why not use the same Dispose None technique in APNG (<a href="https://wiki.mozilla.org/APNG_Specification#.60fcTL.60:_The_Frame_Control_Chunk" rel="nofollow">https://wiki.mozilla.org/APNG_Specification#.60fcTL.60:_The_...</a>) and a polyfill (<a href="https://github.com/davidmz/apng-canvas" rel="nofollow">https://github.com/davidmz/apng-canvas</a>) to provide cross-browser support?<p>Actually it might be preferable to always use the polyfill if you want to do something like the Apple thing where you can scrub around the video. Still doesn't have I-Frames to do frame-skip during fast movements though.