I am editing several 4K videos right now. Each file is in MP4 format and is around 20gb per video. I am using my newest computer, with Windows 10, and I have 16mb of video RAM. But I am not really 'editing' (as in raw footage), more like slicing and dicing.
The "issue" I have with 4K is how can the average user, especially on mobile, truly appreciate the dynamics of 4K? Chances are they will want to view a 1920x1080 "UHD" video compressed down to some size they can actually stream. It takes forever to download a 20gb video and try streaming that size.
So, to me, while 4K is great it's so watered down for the Web that it's not much better than HD in the end. Of course, that may just be me. LOL
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