视图中的 AVPlayer

Question

我正在尝试在视图控制器上使用视频，但不是全屏显示，只有足够的空间用于顶部的标签和底部的按钮，这可能吗？如果不是，我怎么能拥有它，所以如果用户跳过视频或它完成它会转到某个 viewController?

- (void)viewDidLoad {
    [super viewDidLoad];

NSURL *videoURL = [[NSBundle mainBundle]URLForResource:@"TTPlaneHits" withExtension:@"mp4"];
AVPlayerLayer *playerLayer = [AVPlayerLayer playerLayerWithPlayer:_player];


AVPlayer *player = [AVPlayer playerWithURL:videoURL];
playerLayer.frame = CGRectMake(0, 21, self.view.frame.size.width, self.view.frame.size.height - 45 - 21);
[self.view.layer addSublayer:playerLayer];
AVPlayerViewController *controller = [[AVPlayerViewController alloc]init];
controller.player = player;
[player play];


[self.view addSubview:controller.view];
controller.view.frame = self.view.frame;

Answer 1

如果您只使用 AVPlayerLayer 并相应地设置它的框架属性（就像您对任何 CALayer 所做的那样），这可能是最简单的。这是一个例子：

AVPlayer *player = [AVPlayer playerWithURL:videoURL];
AVPlayerLayer *playerLayer = [AVPlayerLayer playerLayerWithPlayer:player];

//labelHeight is the height of your top label
//buttonHeight is the height of your bottom button
playerLayer.frame = CGRectMake(0, labelHeight, self.view.frame.size.width, self.view.frame.size.height - labelHeight - buttonHeight);
[self.view.layer addSublayer:playerLayer];

至于在视频结束时导航到另一个 viewController，您需要注册 NSNotification 的回调。 @random 很好地解释了如何做到这一点 here.

Answer 2

来自 Apple 的文档：

You can display the visual content of items played by an instance of AVPlayer in a CoreAnimation layer of class AVPlayerLayer; to synchronize real-time playback with other CoreAnimation layers, you can use AVSynchronizedLayer. You cannot use an instance of AVVideoCompositionCoreAnimationTool with an AVPlayer object; for offline rendering you should instead use AVAssetExportSession.

试试这个：

（playerView 只是放置在故事板中的 UIView 的 IBOutlet）

 -(void)viewDidLoad {
    [super viewDidLoad];

    NSURL *videoURL = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"test" ofType:@"mp4"]];

    AVPlayerItem *item = [AVPlayerItem playerItemWithURL:videoURL];
    AVPlayer *player = [AVPlayer playerWithPlayerItem:item];

    CALayer *superlayer = self.playerView.layer;

    AVPlayerLayer *playerLayer = [AVPlayerLayer playerLayerWithPlayer:player];
    [playerLayer setFrame:self.playerView.bounds];
    playerLayer.videoGravity = AVLayerVideoGravityResizeAspectFill;
    [superlayer addSublayer:playerLayer];

    [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(playerDidFinishPlaying:) name:AVPlayerItemDidPlayToEndTimeNotification object:item];


    [player seekToTime:kCMTimeZero];
    [player play];

}

-(void)playerDidFinishPlaying:(NSNotification *)notification {

    [self performSegueWithIdentifier:@"YourIdentifier" sender:self];
}

Answer 3

Swift版本

func addVideoPlayer(videoUrl: URL, to view: UIView) {
    let player = AVPlayer(url: videoUrl)
    let layer: AVPlayerLayer = AVPlayerLayer(player: player)
    layer.backgroundColor = UIColor.white.cgColor
    layer.frame = view.bounds
    layer.videoGravity = .resizeAspectFill
    view.layer.sublayers?
        .filter { [=10=] is AVPlayerLayer }
        .forEach { [=10=].removeFromSuperlayer() }
    view.layer.addSublayer(layer)
}

视图中的 AVPlayer

AVPlayer In View

ios

objective-c

avplayer