重用AVPlayer实例播放视频的问题

Question

我要在两个屏幕上播放相同的视频并保持寻找时间。所以我在这些屏幕中重用AVPlayer实例。第一次AVPlayer工作正常，但每当它被重用时，玩家的帧从左上角开始动画，以适应目标视图开始播放。

等， https://www.dropbox.com/s/8ieb4bnb0rsn9ig/ezgif.com-gif-maker.gif?dl=0

代码看起来像，

    if myObj._playerResult != nil {
        _player = myObj._playerResult //reuse player instance
    } else {
        // First create an AVPlayerItem
        let playerItem : AVPlayerItem = AVPlayerItem(URL: NSURL(string:sVideoUrl as String))
        _player = AVPlayer(playerItem: playerItem)
    }

    playerController = AVPlayerViewController()
    playerController?.showsPlaybackControls = false
    playerController?.player = _player
    playerController!.view.frame = targetView.bounds 
    targetView.addSubview(playerController!.view)       
    _player?.play()