Ваше приложение регистрируется для получения уведомлений от MPMediaPlayer? Я не видел этих таймаутов, поэтому не знаю, возвращают ли они MPMoviePlayerContentPreloadDidFinishNotification с userInfo, заполненным вашей ошибкой.
Из MPMoviePlayerController.h:
MP_EXTERN NSString *const MPMoviePlayerContentPreloadDidFinishNotification; // userInfo contains NSError for @"error" key if preloading fails
Из примера кода MoviePlayer:
// 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];