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I have two UIViewControllers each with an AVPlayer that are supposed to play a video file when they are pushed into a UINavigationController: -(void)viewWillAppear:(BOOL)animated{ videoView = [[UIView alloc]initWithFrame:self.view.frame]; NSString *filepath = [[NSBundle mainBundle] pathForResource:@"myVideo" ofType:@"mov"]; NSURL *fileURL = [NSURL fileURLWithPath:filepath]; self.avPlayer = [AVPlayer playerWithURL:fileURL]; AVPlayerLayer *foregroundLayer = [AVPlayerLayer playerLayerWithPlayer:self.avPlayer]; self.avPlayer.actionAtItemEnd = AVPlayerActionAtItemEndNone; foregroundLayer.frame = self.view.frame; foregroundLayer.videoGravity = AVLayerVideoGravityResizeAspectFill; [videoView.layer addSublayer:foregroundLayer]; [self.view addSubview:videoView]; self.avPlayer.actionAtItemEnd = AVPlayerActionAtItemEndNone; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playerItemDidReachEnd:) name:AVPlayerItemDidPlayToEndTimeNotification object:[self.avPlayer currentItem]]; } -(void)viewDidAppear:(BOOL)animated{ [self.avPlayer play]; } -(void)playerItemDidReachEnd:(NSNotification *)notification { [self.navigationController popViewControllerAnimated:NO] }The first time I push any of the UIViewControllers the playback works well. But after that, if I push any of them again the sound plays but the video freezes.I've tried using a MPMoviePlayerViewController but the behavior is the same. Any thoughts?