播放透明背景的電影

Question

我有一個應用程序，我正在按一下按鈕播放電影。我的電影是透明的。當我點擊按鈕時，我的電影可以正常播放，但問題是它的背景色保持白色。我希望電影的背景顏色是透明的。這是我玩電影的代碼。

-(IBAction)ClickFunny:(id)sender 
{ 
    NSString *url = [[NSBundle mainBundle] 
        pathForResource:@"Moviename" 
        ofType:@"mov"]; 
    MPMoviePlayerController *playerController = 
    [[MPMoviePlayerController alloc] 
    initWithContentURL:[NSURL fileURLWithPath:url]]; 
    playerController.controlStyle =MPMovieControlStyleNone; 
    playerController.scalingMode = MPMovieScalingModeAspectFill; 
    playerController.fullscreen = YES; 


     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(movieFinishedCallback:) name:MPMoviePlayerPlaybackDidFinishNotification object:playerController]; 
    playerController.view.frame = CGRectMake(84, 250, 150, 10); 
    [self.view addSubview:playerController.view]; 

    [playerController play]; 



} 
- (void) movieFinishedCallback:(NSNotification*) aNotification { 
    MPMoviePlayerController *player = [aNotification object]; 
    [[NSNotificationCenter defaultCenter] 
    removeObserver:self 
    name:MPMoviePlayerPlaybackDidFinishNotification 
    object:player]; 
    [player stop]; 
    [player.view removeFromSuperview]; 
    [player autorelease]; 
} 

Answer 1

您是否嘗試過設置PlayerController的背景顏色？

playerController.view.backgroundColor = [UIColor clearColor]; 

Answer 2

由於iOS電影播放僅支持24BPP像素，因此無法使用內置iOS邏輯工作。請參閱playing-movies-with-an-alpha-channel-on-the-ipad瞭解如何使用帶有Alpha通道的視頻的真實解決方案。