Avplayer有时显示黑屏，但声音很好

Question

我正在使用AVPlayer和AVPlayerViewController。我在视频中添加水印后播放视频。有时它工作正常，但有时它只显示黑屏，两种情况下音频都很好。

vPlayer = [AVPlayer playerWithURL:_videoFilePath];
// create a player view controller
AVPlayerViewController *controller = [[AVPlayerViewController alloc]init];
controller.videoGravity=AVLayerVideoGravityResizeAspect;
controller.player = vPlayer;
[vPlayer seekToTime:kCMTimeZero];

// show the view controller
[self addChildViewController:controller];
[vPlayer play];
controller.view.frame =_imgForVidFrame.frame;
[self.view addSubview:controller.view];

Answer 1

确保_imgForVidFrame.frame每次都返回正确的帧！您可以将断点放到该行以检查它是否返回正确的大小！

，你的最后一行应该是[self.view addSubview:controller.view];而不是controller.view.frame =_imgForVidFrame.frame;所以交换它！

更新：

然后您可以使用AVPlayerViewController，

执行以下操作

AVPlayer *player = [AVPlayer playerWithURL:_videoFilePath];
AVPlayerLayer *playerLayer = [AVPlayerLayer playerLayerWithPlayer:player];
playerLayer.frame = self.view.bounds;
[self.view.layer addSublayer:playerLayer];
[player play];

或者您可以提供AVPlayerViewController之类的内容，

 AVPlayer *player = [AVPlayer playerWithURL:_videoFilePath];
 AVPlayerViewController *playerViewController = [AVPlayerViewController new];
 playerViewController.player = player;
 [self presentViewController:playerViewController animated:YES completion:nil];