Playing a video in iOS app: audio but no picture

i want a short video to play in my iphone app. When i use the code below, i only hear the audio and see the regular view of the app. I want the video to play on top of this view. What can i do about this?

    NSBundle *bundle = [NSBundle mainBundle]开发者_StackOverflow社区;
    NSString *moviePath = [bundle pathForResource:@"LEADER" ofType:@"mov"];
    NSURL  *movieURL = [[NSURL fileURLWithPath:moviePath] retain];
    MPMoviePlayerController *theMovie = [[MPMoviePlayerController alloc] initWithContentURL:movieURL];
    theMovie.scalingMode = MPMovieScalingModeAspectFill;
    [theMovie play];
    MPMoviePlayerViewController *moviePlayer = [[MPMoviePlayerViewController alloc] initWithContentURL:movieURL];
    [self presentMoviePlayerViewControllerAnimated:moviePlayer];

Don't mix up MPMoviePlayerController and MPMoviePlayerViewController. When you use MPMoviePlayerController use it like this (typically for embedded videos on the iPad):

MPMoviePlayerController *player =
        [[MPMoviePlayerController alloc] initWithContentURL: myURL];
[player.view setFrame: myView.bounds];  // player's frame must match parent's
[myView addSubview: player.view];
// ...
[player play];

When you use MPMoviePlayerViewController then present the video with presentMoviePlayerViewControllerAnimated: (typically for fullscreen videos).

MPMoviePlayerController *player =
        [[MPMoviePlayerController alloc] initWithContentURL: myURL];
[player.view.frame = self.view.frame];
[self.view addSubview: player.view];
// ...
[player play];

The only magic that worked for me was

 - (void) playMovie {
    NSURL *url = [NSURL URLWithString: 
        @"http://www.example.com/video.mp4"];
    MPMoviePlayerController *controller = [[MPMoviePlayerController alloc] 
        initWithContentURL:url];

    self.mc = controller; //Super important
    controller.view.frame = self.view.bounds; //Set the size

    [self.view addSubview:controller.view]; //Show the view
    [controller play]; //Start playing
}

In Header file

@property (nonatomic,strong) MPMoviePlayerController* mc;

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