But animated GIFs aren't dying. They're metastasizing: People festoon their Tumblrs with them, pass them around in email, and use them as Twitter avatars or signatures on discussion boards.

In this way, in major browsers, delays of 10ms or less for GIF images are overwritten by 100ms, so in order to animate GIFs at the fastest speed, it is necessary to use a delay value of '2'.

Because, for the same file size (limited to 3 MB on 4chan), you can have a higher-resolution, longer, higher-frame-rate video with more colors compared to an animated GIF, which is limited to 256 ...