// Determines if the movie is presented in the entire screen (obscuring all other application content). Default is NO.
// Setting this property to YES before the movie player's view is visible will have no effect.
@property(nonatomic, getter=isFullscreen) BOOL fullscreen;
- (void)setFullscreen:(BOOL)fullscreen animated:(BOOL)animated;
Из MPMoviePlayerController.h
так вот вам код:
- (void)playVideoFromUrl:(NSString*)url {
MPMoviePlayerViewController *moviePlayer = [[[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL URLWithString:url]] autorelease];
[((UIWindow*)[[UIApplication sharedApplication].windows objectAtIndex:0]).rootViewController presentMoviePlayerViewControllerAnimated:moviePlayer];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlaybackComplete:)
name:MPMoviePlayerPlaybackDidFinishNotification object:moviePlayer];
[moviePlayer.moviePlayer setFullscreen:YES animated:YES];
[moviePlayer.moviePlayer setControlStyle:MPMovieControlStyleFullscreen];
}
- (void)moviePlaybackComplete:(NSNotification *)notification {
MPMoviePlayerViewController *moviePlayer = [notification object];
[[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification object:moviePlayer];
[((UIWindow*)[[UIApplication sharedApplication].windows objectAtIndex:0]).rootViewController dismissMoviePlayerViewControllerAnimated];
}