For stronger effects: 1. Fullscreen Isn't it obvious? 2. X2 playback speed The faster it goes the stronger the effects 3. Loop for however long you want So the video doesn't end (because that can make it last longer).
Imagine being here 12 hours whit AAALL those effects PS: you forgot playing the video in a PC and then you got it (well that could work if YT wasn't lazy to ad the option from the point 3)
I sometimes had similar effects in my head as a child. Have no idea what causedit but sometimes when I was laying and looking at the room i was in I saw it and some different size balls going through the corners. I was scared of it and had no idea what caused that.