I am trying to achieve smooth video scrubbing with AVPlayer through UISlider I have searched and it seems Apple has a Technical Q&A and explained how to achieve this, but my problem is how should I use this method and change player current time with a UISlider: stopPlayingAndSeekSmoothlyToTime(newChaseTime:CMTime)
Here is my code :
//Play Intro Movie let videoURL = Bundle.main.url(forResource: "intro", withExtension: "mp4") player = AVPlayer(url:videoURL!) let playerLayer = AVPlayerLayer(player: player) playerLayer.frame = self.view.frame view.layer.addSublayer(playerLayer) //videoPlayer.play() view.addSubview(slider) slider.maximumValue = 0 slider.maximumValue = Float(CMTimeGetSeconds((player.currentItem?.asset.duration)!)) Here is Apple sample code :
func stopPlayingAndSeekSmoothlyToTime(newChaseTime:CMTime) { player.pause() if CMTimeCompare(newChaseTime, chaseTime) != 0 { chaseTime = newChaseTime; if !isSeekInProgress { trySeekToChaseTime() } } } func trySeekToChaseTime() { if playerCurrentItemStatus == .unknown { // wait until item becomes ready (KVO player.currentItem.status) } else if playerCurrentItemStatus == .readyToPlay { actuallySeekToTime() } } func actuallySeekToTime() { isSeekInProgress = true let seekTimeInProgress = chaseTime player.seek(to: seekTimeInProgress, toleranceBefore: kCMTimeZero, toleranceAfter: kCMTimeZero, completionHandler: { (isFinished:Bool) -> Void in if CMTimeCompare(seekTimeInProgress, self.chaseTime) == 0 { self.isSeekInProgress = false } else { self.trySeekToChaseTime() } }) } 2 Answers
Answers 1
Although I'm not using the same method as you do which is stopPlayingAndSeekSmoothlyToTime, I thought I should help you with the seeking action of the player.
func sliderValueChanged() { var timeToSeek = player.currentItem?.asset.duration.seconds timeToSeek = timeToSeek * Double(slider.value) player.seek(to: CMTimeMake(Int64(timeToSeek), 1)) } Also you should set the slider.maximumValue to 1. Hope this helps.
Note: Please don't forget to handle currentItem optional value. If it is nil you should set the value 0 for timeToSeek variable.
Answers 2
On slider value change event, just call the
stopPlayingAndSeekSmoothlyToTime(CMTime.init(seconds: (player.currentItem?.asset.duration.seconds)!* slider.value, preferredTimescale: 1000))
The Apples sample code will change the player current time. You can also adjust toleranceBefore and toleranceAfter if you scrub the slider really fast.
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