ios - ARC がビデオの再生に失敗する

Question

ARC がオンの場合、ビデオを再生できません (ビデオは永久に読み込まれます)。ARC がオフの場合、ビデオを正常に再生できます。コードを編集して、ARC をオンにしてビデオを再生する理由と方法がわかりません。こちら私のコードです

-(IBAction)playMovie:(id)sender
{
    NSString *filepath   =   [[NSBundle mainBundle] pathForResource:@"big-buck-bunny-clip" ofType:@"m4v"];
    NSURL    *fileURL    =   [NSURL fileURLWithPath:filepath];
    MPMoviePlayerController *moviePlayerController = [[MPMoviePlayerController alloc] initWithContentURL:fileURL];
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(moviePlaybackComplete:)
                                                 name:MPMoviePlayerPlaybackDidFinishNotification
                                               object:moviePlayerController];
    [self.view addSubview:moviePlayerController.view];
    moviePlayerController.fullscreen = YES;
    [moviePlayerController play];
}
- (void)moviePlaybackComplete:(NSNotification *)notification
{
    MPMoviePlayerController *moviePlayerController = [notification object];
    [[NSNotificationCenter defaultCenter] removeObserver:self
                                                    name:MPMoviePlayerPlaybackDidFinishNotification
                                                  object:moviePlayerController];
    [moviePlayerController.view removeFromSuperview];

}