Facebook's video could finally catch up to YouTube

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.
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Up until now, Facebook has only supported 4K video for live 360 videos — itself a relatively recent development. But the soc