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？

使用MPMoviePlayerController播放视频时，我得到的是黑色背景而不是透明背景。

知道如何在透明背景下玩吗？

            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在其自己的上下文中显示。 如果要将视频添加到UIViewcontroller中（我想这就是您要在视频下方进行某些内容的显示），则应使用AVPLayer播放视频，并使用AVPlayerLayer将视频添加到视图中。