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标题: ios - 使用 AVPlayer-Swift 无缝循环播放视频 [打印本页]

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作者: 菜鸟教程小白    时间: 2022-12-13 14:53
标题: ios - 使用 AVPlayer-Swift 无缝循环播放视频

我正在使用 AVPlayer 在后台使用循环播放本地视频，视频播放正常，但在完成视频后需要暂停才能循环播放视频。我尝试了很多方法，也看到了很多关于堆栈溢出的帖子，但我没有找到合适的解决方案。我正在使用 Swift3。

代码在这里:

var videoplayer :AVPlayer = AVPlayer()

override func viewDidLoad() {
super.viewDidLoad()

let path = Bundle.main.path(forResource: "background4", ofType: "mp4")
        videoplayer = AVPlayer(url: URL(fileURLWithPath: path!))
        videoplayer.volume = 0     
        videoplayer.actionAtItemEnd = AVPlayerActionAtItemEnd.none;

        let playerLayer = AVPlayerLayer(player: videoplayer)
        playerLayer.frame = self.view.frame
        playerLayer.videoGravity = AVLayerVideoGravityResizeAspectFill

        if (videoplayer.rate != 0) {
            print("playing videoplayer")
            self.blurBgImage.isHidden = true
        }

        playerLayer.zPosition = -1
        videoplayer.rate = 0
        videoplayer.play()
        self.blurBgImage.layer.addSublayer(playerLayer)

 NotificationCenter.default.addObserver(forName: .AVPlayerItemDidPlayToEndTime, object: videoplayer.currentItem, queue: nil, using: { (_) in
        DispatchQueue.main.async {

             let t1 = CMTimeMake(5, 100)
            self.videoplayer.seek(to: t1)
            self.videoplayer.play()
        }
    })
}

我也尝试过 AVPlayerLooper。 代码是:

 var playerLooper: NSObject?
var playerLayer:AVPlayerLayer!
var queuePlayer: AVQueuePlayer?

 func playVideo(_ filmName: String){
       if let path = Bundle.main.path(forResource: filmName, ofType: "mp4")        let url =  URL(fileURLWithPath: path)
         if #available(tvOS 10.0, *) {
          let playerItem = AVPlayerItem(url: url as URL)
            self.videoplayer = AVQueuePlayer(items: [playerItem])
            self.playerLayer = AVPlayerLayer(player: self.videoplayer)
            self.playerLooper = AVPlayerLooper(player: self.videoplayer as! AVQueuePlayer, templateItem: playerItem)
            self.blurBgImage.layer.addSublayer(playerLayer!)
            self.playerLayer?.frame = self.view.frame
            self.videoplayer.volume = 10
            self.videoplayer.play()
        } else {
            videoplayer = AVPlayer(url: url)
            videoplayer.play()
            loopVideo(videoplayer)
        }
}
}

我应该怎么做才能无缝循环？提前致谢。

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Best Answer-推荐答案

仅供引用，这里有示例代码:https://developer.apple.com/library/content/samplecode/avloopplayer/Introduction/Intro.html

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@matt 删除的答案对我(在设备/模拟器上)适用于 iOS 10+ 设备:

Use AVPlayerLooper. That is exactly what it is for.

https://developer.apple.com/reference/avfoundation/avplayerlooper

Basically it implements AVQueuePlayer for you, constantly updating the queue so that it never ends.

它无缝循环，没有任何白/黑光点。

例如

private var looper: AVPlayerLooper?

...

let queuePlayer = AVQueuePlayer(playerItem: item)
looper = AVPlayerLooper(player: queuePlayer, templateItem: item)
videoPlayerLayer.player = queuePlayer

如果您最终在可重复使用的单元格(例如 UICollectionView)中执行此操作，请确保在重复使用单元格之前禁用循环，否则您会遇到一些难以理解的崩溃:

looper?.disableLooping()

关于ios - 使用 AVPlayer-Swift 无缝循环播放视频，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/42105431/

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