This. I think Imgur has been using "gifv" which is just WebM. Imageboards that used to accept GIF only now also accepts WebM. Telegram's "GIF"s are actually H.

This. I think Imgur has been using "gifv" which is just WebM. Imageboards that used to accept GIF only now also accepts WebM. Telegram's "GIF"s are actually H.264 MP4s without an audio track. And I think Lottie or SVG may be a viable replacement to SWF movies. Sadly there is no software working with these formats that is as user-friendly as old-school Flash.