如何在iOS应用程序中播放.flv/.mp4格式的透明背景视频

Question

如何在iOS应用程序中播放.flv/.mp4格式的透明背景视频？

当我使用MPMoviePlayerController播放视频时，我得到黑色背景而不是透明背景。

知道如何玩透明背景吗？

            MPMoviePlayerController *player = [[MPMoviePlayerController alloc] init];
            player.controlStyle = MPMovieControlStyleNone;
            player.repeatMode = MPMovieRepeatModeOne;
            player.view.frame = videoImageView.frame;
            player.shouldAutoplay = YES;
            for(UIView* subV in player.view.subviews) {
                subV.backgroundColor = [UIColor clearColor];
            }
            for(UIView* subV in player.backgroundView.subviews) {
                subV.backgroundColor = [UIColor clearColor];
            }
            player.view.backgroundColor = [UIColor clearColor];
            player.backgroundView.backgroundColor = [UIColor clearColor];
            player.view.superview.backgroundColor = [UIColor clearColor];
            player.backgroundView.superview.backgroundColor = [UIColor clearColor];
            player.view.layer.backgroundColor = [[UIColor clearColor]CGColor];
            player.backgroundView.layer.backgroundColor = [[UIColor clearColor]CGColor];

我也用过AVPlayer，它也显示黑色背景

        avAsset = [AVAsset assetWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"Video_Thumb_01" ofType:@"mp4"]]];
        avPlayerItem =[[AVPlayerItem alloc]initWithAsset:avAsset];
        avPlayer = [[AVPlayer alloc]initWithPlayerItem:avPlayerItem];
        avPlayerLayer =[AVPlayerLayer playerLayerWithPlayer:avPlayer];
        [avPlayerLayer setFrame:videoImageView.frame];
        [avPlayerLayer setBackgroundColor:[[UIColor clearColor]CGColor]];
        [avPlayer seekToTime:kCMTimeZero];
        [avPlayer play];

Answer 1

MPMoviePlayerController 显示在它自己的上下文中。如果你想将视频添加到UIView控制器（我想这就是你想要的，因为你想在视频下面播放一些东西），你应该使用AVPLayer播放视频并使用AVPlayerlayer将视频添加到你的视图中。