How to prevent user from taking screenshot of MPMovieplayerController contents?

Question

I've just used HBONow and found that when I want to take screenshot of the movie(just like GOT),the content of the HBONow player will become black. then I know that this is the method of prevent user from share contents.

The question is,I've used MPMoviePlayerController or AVPlayerViewController to play my own contents, how can I do the same thing as HBO and prevent user from taking screenshots?

Answer 1

After search, I've found what they use for content protecting

see thisreddit link

and

FPS official document