Why does a video play the picture but has no sound?

video plays but no picture - just sound?

• Edit: if you come across this and want to know how I eventually solved it I gave up on that code below eventually and did this: -(void)playMovieAtURL:(NSURL*)theURL{ mediaPlayer = [[MPMoviePlayerViewController alloc] initWithContentURL:theURL]; [self presentMoviePlayerViewControllerAnimated:mediaPlayer]; mediaPlayer.view.backgroundColor = [UIColor blackColor]; } Original post: This is my code - I took it off the apple site so shouldn't be a problem. It runs in a UITableViewController on the didSelectRowAtIndexPath method. When you select the row the video starts playing - the sound outputs at least - but there's no picture. Any idea why this is? I have included the framework. The video is one off the apple website (a facetime video) that I used for testing. -(void)playMovieAtURL:(NSURL*)theURL{ MPMoviePlayerController* theMovie = [[MPMoviePlayerController alloc] initWithContentURL: theURL]; theMovie.scalingMode = MPMovieScalingModeAspectFill; theMovie.controlStyle = MPMovieControlStyleNone; // Register for the playback finished notification [[NSNotificationCenter defaultCenter] addObserver: self selector: @selector(myMovieFinishedCallback:) name: MPMoviePlayerPlaybackDidFinishNotification object: theMovie]; // Movie playback is asynchronous, so this method returns immediately. [theMovie play]; }

• Answer:

  The behaviour of MPMoviePlayerController changed in OS 3.2 - you need to explicitly add the movie player's view to your view hierarchy now - using something like: [aView addSubview:moviePlayerController.view]; moviePlayerController.view.frame = aView.frame; Alternatively you can use an MPMoviePlayerViewController (new in 3.2) to manage the view. If you're targetting both pre- and post-3.2 devices (e.g. iOS 3.1 and 4.0) then you'll need some conditional code to determine the OS the code is running on and handle accordingly. I've used this in previous projects: if ([moviePlayerController respondsToSelector:@selector(setFullscreen:animated:)]) { // Running on OS 3.2 or above // Code to add to a view here... }