These days, I'd say it's probably best to use video for non-interactive animations. Flash is from a time where network speeds were too slow and video compressio

These days, I'd say it's probably best to use video for non-interactive animations. Flash is from a time where network speeds were too slow and video compression was too poor, both in ratio and picture quality, to be feasible. But now, it's a better option also because you don't need a runtime nor need worry about browser compatibility of some javascript animation library.