Loop playback with AVQueuePlayer

LoopedPlayer.swift

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import UIKit
import PlaygroundSupport
import AVFoundation
import AVKit

let frame = CGRect(x: 0, y: 0, width: 400, height: 400)

final class LoopedVideoPlayerView: UIView {
    
    fileprivate var videoURL: URL?
    fileprivate var queuePlayer: AVQueuePlayer?
    fileprivate var playerLayer: AVPlayerLayer?
    
    func playViewURL(_ videoURL: URL) {
        
        let playerItem = AVPlayerItem(url: videoURL)
        
        self.queuePlayer = AVQueuePlayer(playerItem: playerItem)
        NotificationCenter.default.addObserver(forName: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: nil, queue: nil) {[weak self] notif in
            print("Video playback ended")
            self?.queuePlayer?.insert(AVPlayerItem(url: videoURL), after: nil)
        }
        self.playerLayer = AVPlayerLayer(player: self.queuePlayer)
        guard let playerLayer = self.playerLayer else {return}
        
        playerLayer.videoGravity = .resizeAspectFill
        playerLayer.frame = self.frame
        self.layer.addSublayer(playerLayer)
        self.queuePlayer?.play()
    }
    
    override init(frame: CGRect) {
        super.init(frame: frame)
    }
    
    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }
    
}

let container = LoopedVideoPlayerView(frame: frame)
PlaygroundPage.current.liveView = container
PlaygroundPage.current.needsIndefiniteExecution = true
PlaygroundPage.current.liveView = container

if let videoURL = Bundle.main.url(forResource: "31", withExtension: "mp4") {
    container.playViewURL(videoURL)
}