Originally Posted by Nautilus

You have to be consistent, if you take down your uploaded clips fast and you always do that, most of them will give up sooner or later.

Also when you see that happening start DMCAing to broader range of recipients, start from their hosting service and build more pressure from there. Pirates do not operate in vacuum, they have partners and your goal is to find the weak link in the chain. Some of their partners will start getting nervous from getting too many DMCAs (and follow ups too pointing out the fact that this is a repeat infringer), some of them at some point will have enough of it and bark at a pirate to stop. When that happens they'd usually drop posting your stuff to avoid getting into too much heat and noise.