如何在AVPlayer IOS中使用URL播放youtube视频？

我想使用YouTube URL在AVPlayer中加载视频但它没有显示任何内容.无论何时我使用NSBundle从本地存储加载它都工作正常.有任何替代加载视频或我们可以在AVPlayer中做一些事情.

这是我的代码：

- (void)viewDidLoad
{
   [super viewDidLoad];
   NSError *setCategoryError = nil;
  [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayBACk error: &setCategoryError];
  AVAsset *asset = [AVAsset assetWithURL:[NSURL fileURLWithPath:@"http://www.youtube.com/watch?v=zPP6lXaL7KA&feature=youtube_gdata_player"]];
  avPlayerItem = [[AVPlayerItem alloc]initWithAsset:asset];
  self.songPlayer = [AVPlayer playerWithPlayerItem:avPlayerItem];
  self.avPlayerLayer = [AVPlayerLayer playerLayerWithPlayer: self.songPlayer];
  self.avPlayerLayer.frame = self.view.layer.bounds;
  UIView *newView = [[UIView alloc] initWithFrame:self.view.bounds];
  [newView.layer addSublayer:avPlayerLayer];
  [self.view addSubview:newView];
  [ self.songPlayer play];
}