How do you loop AVPlayer in Swift?

Question

Simple question I can\'t seem to find an answer to for some reason.

How do you loop AVPlayer in Swift?

numberOfLoops = -1 only works for AVAudioPlayer

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Answer 1

I've managed to create a seamless video looping for OSX in swift 3. It should work on iOS and with little modification on swift 2 as well.

var player : AVQueuePlayer!

// Looping video initial call
internal func selectVideoWithLoop(url : URL)
{
    let asset = AVAsset(url: url)
    player.pause()
    let playerItem1 = AVPlayerItem(asset: asset)
    let playerItem2 = AVPlayerItem(asset: asset)
    player.removeAllItems()
    player.replaceCurrentItem(with: playerItem1)
    player.insert(playerItem2, after: playerItem1)
    player.actionAtItemEnd = AVPlayerActionAtItemEnd.advance
    player.play()

    let selector = #selector(ViewController.playerItemDidReachEnd(notification:))
    let name = NSNotification.Name.AVPlayerItemDidPlayToEndTime
    // removing old observer and adding it again for sequential calls. 
    // Might not be necessary, but I like to unregister old notifications.
    NotificationCenter.default.removeObserver(self, name: name, object: nil)
    NotificationCenter.default.addObserver(self, selector: selector, name: name, object: nil)
}

// Loop video with threadmill pattern
// Called by NotificationCenter, don't call directly
func playerItemDidReachEnd(notification: Notification)
{
    let item = player.currentItem!
    player.remove(item)
    item.seek(to: kCMTimeZero)
    player.insert(item, after: nil)
}

When you want to change the video, just call selectVideoWithLoop with a different url again.

Answer 2

Alternatively, you can use the block-based NSNotificationCenter API:

func loopVideo(videoPlayer: AVPlayer) {
    NSNotificationCenter.defaultCenter().addObserverForName(AVPlayerItemDidPlayToEndTimeNotification, object: nil, queue: nil) { notification in
        videoPlayer.seekToTime(kCMTimeZero)
        videoPlayer.play()
    }
}

Answer 3

@Christopher Pickslay's answer updated for Swift 4:

func loopVideo(videoPlayer: AVPlayer) {
    NotificationCenter.default.addObserver(forName: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: nil, queue: nil) { notification in
        videoPlayer.seek(to: CMTime.zero)
        videoPlayer.play()
    }
}

But, as I mentioned below his answer, be sure to specify the object as the AVPlayer's player item if you have multiple players.

Answer 4

Might be a bit late to the conversation, but for the sake of upade (in case anyone comes here again), I found this answer HERE (it's another answer on SO) that worked for me.

Answer 5

Swift 5 (iOS 10.0+)

var playerLooper: AVPlayerLooper! // should be defined in class
var queuePlayer: AVQueuePlayer!
...

let asset: AVAsset = ... // AVAsset with its 'duration' property value loaded
let playerItem = AVPlayerItem(asset: asset)
self.queuePlayer = AVQueuePlayer(playerItem: playerItem)

// Create a new player looper with the queue player and template item
self.playerLooper = AVPlayerLooper(player: queuePlayer, templateItem: playerItem)

< iOS 10.0

All above works in any iOS version. But, for < iOS 10.0 it's the only solution.

Swift 4

var player: AVPlayer!

...

NotificationCenter.default.addObserver(forName: .AVPlayerItemDidPlayToEndTime, object: self.player.currentItem, queue: .main) { [weak self] _ in
    self?.player?.seek(to: CMTime.zero)
    self?.player?.play()
}

Swift 3

NotificationCenter.default.addObserver(forName: .AVPlayerItemDidPlayToEndTime, object: self.player.currentItem, queue: .main) { [weak self] _ in
    self?.player?.seek(to: kCMTimeZero)
    self?.player?.play()
}

Swift 2

After AVPlayerItem is configured and player is created:

var player: AVPlayer!

...

// Invoke after player is created and AVPlayerItem is specified
NSNotificationCenter.defaultCenter().addObserver(self,
    selector: "playerItemDidReachEnd:",
    name: AVPlayerItemDidPlayToEndTimeNotification,
    object: self.player.currentItem)

...
 
func playerItemDidReachEnd(notification: NSNotification) {
    self.player.seekToTime(kCMTimeZero)
    self.player.play()
}

Don't forget to import AVFoundation

Answer 6

OK I have worked it out. Thanks Msencenb for pointing me in the right direction with an Objective C answer.

player_1?.actionAtItemEnd = .None

//set a listener for when the video ends   
NSNotificationCenter.defaultCenter().addObserver(self,
        selector: "restartVideoFromBeginning",
        name: AVPlayerItemDidPlayToEndTimeNotification,
        object: player_1?.currentItem)


//function to restart the video
func restartVideoFromBeginning()  {

    //create a CMTime for zero seconds so we can go back to the beginning
    let seconds : Int64 = 0
    let preferredTimeScale : Int32 = 1
    let seekTime : CMTime = CMTimeMake(seconds, preferredTimeScale)

    player_1!.seekToTime(seekTime)

    player_1!.play()

}