[IshKebab]

Right but you can't put videos in an img tag so they can't really replace GIFs. E.g. in GitHub issues you still are forced to use GIF.

[auscompgeek]

GitHub issues let you attach videos since last month: https://github.blog/changelog/2020-12-16-video-upload-public...

[IshKebab]

OMG finally! I've been waiting for years.

[BlueTemplar]

Nor in documents : many PDF readers (including browsers ??) don't seem to be able to read MP4 in PDFs, EPUB doesn't support MP4, and MHTML has been discontinued for some weird reason (at least Libre Office displays MP4 in ODT just fine, but it has other issues). Maybe this is due to the patents in MP4 ? And GIF is supported but is just too big.