For all its investment in video, Facebook is still very much behind many other platforms in one important way: 4K.
That may be sloooowly starting to change as the social network is finally beginning to experiment with 4K video uploads — more than seven years after YouTube first began testing 4K.
SEE ALSO: Facebook is reportedly testing a new resume / CV feature
Up until now, Facebook has only supported 4K video for live 360 videos — itself a relatively recent development. But the social network...