Running a 30FPS source video at 60FPS would be the same as playing a 30FPS game on a TV. You would just have double the frames for no reason and it would look the same. If you can't tell the difference between 30 and 60 then you need to see a neurologist. It's blatantly obvious, always. Play Mario Kart in single player, then do 4 player split screen, that's the difference.