Most effective method for video as background in iOS

Question

Perhaps you have noticed one of the latest trend in iOS-apps: Using videos as backgrounds - mainly at login- or \"first launch\" screens. Yesterday I attempted to mimic this

Answer 1

For iOS9, I used Andrius' code and added the following for the loop:

-(void)replayBG:(NSNotification *)n {
    [playerLayer.player seekToTime:kCMTimeZero];
    [playerLayer.player play];
}