well Waifu2x is indeed most impressive snd pretty fast but still...
on an Intel pro 460 (macbook pro 15" late 2016 with max available hardware) it takes about 3 seconds for a pic to upscale from 765x335 to 6120x2680 and apply it.
so for regular videos I'd say 2seconds per frame which is 0.5FPS... we need 60x the speed of that to get it running....
And it's gonna be rather hard to find hardware 60x faster (i7 at 3.8GHz and Inter 460 here).
But still I only tested the thing inside the browser from http://waifu2x.me/
so doing it directly with an app might be a bit faster, that I do not know.
Still I really REALLY hope it'll work one day! ^.^
Some linux (ubuntu) pro should read through this, it looks like there IS a method to apply it to videos https://github.com/nagadomi/waifu2x