The tag implication #8827 webm -> video has been approved.
Reason: (MP4 too) it's not clear why there's a separate video tag if there's more "WEBM"s than videos. wiki entry for "video" is blank, so if there is a reason, it should be there.
the difference between MP4 and webm is meaningless to the end user in 2019, they're just html5 video tags and behave in exactly the same way.
results should be similar to "animated -animated_gif"
EDIT: The tag implication webm -> video (forum #465) has been approved by @thatenemy.
Updated by DanbooruBot