so how can i fix the screen saver playing over movies or shows im watching cause of inactivity?
As far as I know only by disabling it in the iStripper settings.
The main problem with the iStripper screensaver is that it does not use the operating system's screen saver services but tries to do everything for itself. The OS does not treat it any differently from any other program that tells it to open a window on top of any other windows that are currently open and so, obligingly, does as it has been asked.
A few years ago programs could repeatedly request that their window was "on top" and if two or more programs did so they would "fight it out" by continuously replacing each other as the topmost window. Now this does not happen and they form a nice stable stack, which is what is normally most appropriate, but fullscreen video playback and screensavers need to be treated as special cases which only works if the OS knows about both of them. As the iStripper screensaver does not use the proper screensaver interface the OS doesn't know about it and will therefore treat it as just another fullscreen window, as if you had started a second movie player.