>>25621004
If memory serves me, some softwares fuck with screen capture, like for instance if you try to printscreen something in Netflix app, you just get a black screen instead. They would most likely implement something like this in the browser level, if this isn't the case already.
Sure, ultimately you could even point a camera to your own monitor to film the thing. But the point being is: if you have to view the video, you already reduced like 98% of what people will download.