title: AVPlayerview comes from top left corner
body: <p>I'm using AVPlayer to play videos. I have an issue on fullscreen mode. Video player comes from top left corner. It looks odd.</p>
  
  <pre><code>NSString *filePath = [self.video_Array objectAtIndex:index];
  NSString *soundFilePath = [[NSBundle mainBundle] pathForResource:filePath ofType: nil];
  url = [[NSURL alloc] initFileURLWithPath: soundFilePath];
  currentItem = [AVPlayerItem playerItemWithURL:url];
  _playerViewController = [[AVPlayerViewController alloc] init];
  _playerViewController.videoGravity = AVLayerVideoGravityResize;
  _playerViewController.view.frame = self.view.bounds;
  _playerViewController.showsPlaybackControls = NO;
  _video=[AVPlayer playerWithURL:url];
  _video = [AVPlayer playerWithPlayerItem:currentItem];
  _playerViewController.player = _video;
  [_playerViewController.player play];
  [self.view addSubview:_playerViewController.view];
  </code></pre>