如何在Swift 4中設置視頻的偏移量？ 尋求（to :)似乎不起作用

Question

我在設置AVQueuePlayer視頻的偏移量時遇到問題。 我試過了seek（以設置視頻的偏移量，但它似乎不起作用。視頻總是從0秒開始。其他要求是通過控制播放並循環播放，這樣效果很好。

我很想從0秒以外的任何其他位置播放視頻。

    func getVideoView() -> UIView
    {

    var videoViewContainer = UIView(frame: CGRect(x: 0, y: 0, width: 375, height: 375))

    let videoUrl = URL(string: "https://myvideourl.mp4")

    let item = AVPlayerItem(url: videoUrl!)

    player = AVQueuePlayer()

    playerLooper = AVPlayerLooper(player: player!, templateItem: item)

    let time =  CMTime(seconds: 17.000000, preferredTimescale: CMTimeScale(1))

    player?.seek(to: time, completionHandler: { (handler) in


    } )

    item.forwardPlaybackEndTime = CMTimeMake(20, 1) // For playing it for 20 Seconds

    let layer: AVPlayerLayer = AVPlayerLayer(player: player)


    layer.frame = videoViewContainer.bounds

    layer.videoGravity = AVLayerVideoGravity.resizeAspectFill

    videoViewContainer.layer.addSublayer(layer)

    player?.play()



    return videoViewContainer
}

Answer 1

我得到了答案。 與AVPlayerLooper一起使用時，SeekTo似乎不起作用。

AVPlayerLooper本身具有屬性時間范圍。 下面給出的例子

    playerLooper = AVPlayerLooper(player: self.player!,
                            templateItem: item!, 
                               timeRange: CMTimeRange(start: CMTime(seconds: Double(start), preferredTimescale: 1) , duration: CMTime(seconds: Double(duration), preferredTimescale: 1)))