Avplayer有時顯示黑屏，但聲音很好

Question

我正在使用AVPlayer與AVPlayerViewController。我在視頻中添加水印後正在播放視頻。有時它工作正常，但有時它只顯示黑屏，並且音頻在兩種情況下都很好。

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

確保_imgForVidFrame.frame每次都返回正確的幀！您可以將斷點放到該行來檢查它是否返回適當的大小！

和你的最後一行應該是[self.view addSubview:controller.view];不是controller.view.frame =_imgForVidFrame.frame;所以換掉它！

更新：

，那麼你可以這樣做下面withou AVPlayerViewController，

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

，或者你可以提出AVPlayerViewController類似，

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