Does your app register to receive notifications from the MPMediaPlayer? I haven't seen these timeouts, so I don't know if they return the MPMoviePlayerContentPreloadDidFinishNotification with the userInfo filled with your error.
From MPMoviePlayerController.h:
MP_EXTERN NSString *const MPMoviePlayerContentPreloadDidFinishNotification; // userInfo contains NSError for @"error" key if preloading fails
From the MoviePlayer sample code:
// Register to receive a notification that the movie is now in memory and ready to play
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(moviePreloadDidFinish:)
name:MPMoviePlayerContentPreloadDidFinishNotification
object:nil];
// Register to receive a notification when the movie has finished playing.
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(moviePlayBackDidFinish:)
name:MPMoviePlayerPlaybackDidFinishNotification
object:nil];
// Register to receive a notification when the movie scaling mode has changed.
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(movieScalingModeDidChange:)
name:MPMoviePlayerScalingModeDidChangeNotification
object:nil];