ios - 传递给不同 Controller 时 AVPlayer 持续时间会发生变化

Question

我在 Collection View 单元格中有一个带有 AVPlayer 的 Controller 。当方向更改为横向时，播放器应获得全屏。

为此，我在 Collection View Cell 中展示了一个具有相同播放器实例的 AVPlayerController。在播放模式下旋转视频时效果很好。但是，当视频暂停并且我将方向更改为横向时，当前帧会发生变化，即视频向前移动。

我已经测试过，即使方向保持不变，当玩家经过时，持续时间也会跳过几秒钟。

代码如下:

在存在单元格的 ViewController 中。

override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
    super.viewWillTransition(to: size, with: coordinator)

    guard let videoCell = contentGalleryController.curatorVideoCell else {return}
    if UIDevice.current.orientation == .landscapeLeft || UIDevice.current.orientation == .landscapeRight {
        let player = videoCell.getVideoPlayer
        playerViewController = (storyboard!.instantiateViewController(withIdentifier: "FullScreenPlayerController") as! FullScreenPlayerController)
        playerViewController?.player = player
        playerViewController?.didPlayedToEnd = videoCell.isVideoFinishedPlaying ?? false
        playerViewController?.isMuteTurnedOn = player.isMuted
        let wasVideoPlaying: Bool = player.isPlaying
        present(playerViewController!, animated: false){
            if wasVideoPlaying {
                player.play()
            }
        }
    }
    else {
        videoCell._setMuteIcon()
        videoCell._setPlayPauseIcon()
        playerViewController?.dismiss(animated: false, completion: nil)
    }
}

在全屏播放器 View Controller 中

override func viewDidLoad() {
        super.viewDidLoad()
        setPlayPauseIcon()
        setMuteIcon()

        let tapGesture = UITapGestureRecognizer(target: self, action: #selector(customControlViewTapped))
        customView.addGestureRecognizer(tapGesture)
    }

    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()

        if !view.subviews.contains(customView) {
            customView.frame = view.bounds
            view.addSubview(customView)
        }
    }

    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
        NotificationCenter.default.addObserver(self, selector: #selector(playerDidPlayToEnd), name: Notification.Name.AVPlayerItemDidPlayToEndTime, object: player?.currentItem)
    }

    override func viewDidDisappear(_ animated: Bool) {
        super.viewDidDisappear(animated)
        NotificationCenter.default.removeObserver(self)
    }

我在 Controller 中什么都不做。

截图:纵向

景观

当方向改变时，即使在暂停状态下视频也会向前移动。

提前感谢您的帮助。

Answer 1

您应该 try catch currentTime，然后在播放器上使用 seek(to time: CMTime) 方法以在该确切时间开始播放。我不确定为什么这会发生在你身上，但我认为这会让你得到你正在寻找的结果。