如何设置 tvos 应用程序 avplayer 的速度，基于用户单击 2x,3x 等按钮

Question

Iam working with AVPlayer of tvos application,making the speed of the avplayer when user clicks button 3x (self.player.rate = 3.0). But rate of playing the video is not changing it is playing at normal rate. is rate property is not work in tvos application. can any help me how to set the speed of the avplayer.

Here is my setup code.

func setUpPlayer(videourl:String) {
    playerItem = AVPlayerItem.init(url: URL(string: videourl)!)
    player = AVPlayer(playerItem: playerItem)
    self.player.actionAtItemEnd = AVPlayerActionAtItemEnd.none
    let av = AVPlayerViewController()
    av.player = player
    av.view.frame = CGRect(x: 0, y: 0, width: 1920, height: 1080)
    av.showsPlaybackControls = true
    self.addChildViewController(av)
    self.view.addSubview(av.view)
    if isfromspeed {
        self.player!.rate = 3.0
    }
    player.play()
}

Answer 1

From the docs ...

A value of 0.0 pauses the video, while a value of 1.0 plays the current item at its natural rate. Rates other than 0.0 and 1.0 can be used if the associated player item returns true for the AVPlayerItem properties canPlaySlowForward or canPlayFastForward. Negative rate value ranges are supported if the player item returns true for the canPlayReverse, canPlaySlowReverse, and canPlayFastReverse properties.

You will need to confirm that both the current media and platform supports values other than 0.0 or 1.0