an implementation of UIKit bridged LoopPlayerView

LoopPlayerView.swift

import SwiftUI
import AVKit

// NOTE: be careful when use as it has state problem.
struct LoopPlayerView: View {
    let player: AVQueuePlayer
    let playerItem: AVPlayerItem
    let configuration: PlayerView.Configuration

    private let looper: AVPlayerLooper

    init(
        player: AVQueuePlayer = AVQueuePlayer(),
        playerItem: AVPlayerItem,
        configuration: @escaping PlayerView.Configuration = {
            $0.showsPlaybackControls = false
            $0.videoGravity = .resizeAspectFill
        }
    ) {
        self.player = player
        self.playerItem = playerItem
        self.configuration = configuration
        looper = AVPlayerLooper(player: player, templateItem: playerItem)
    }

    var body: some View {
        PlayerView(player: player, configuration: configuration)
            .onAppear { player.play() }
            .onDisappear { player.pause() }
    }
}

struct PlayerView: UIViewControllerRepresentable {
    typealias Configuration = (AVPlayerViewController) -> Void

    let player: AVPlayer
    let configuration: Configuration

    init(
        player: AVPlayer,
        configuration: @escaping Configuration = { _ in }
    ) {
        self.player = player
        self.configuration = configuration
    }

    func makeUIViewController(context: Context) -> some UIViewController {
        {
            $0.player = player
            configuration($0)
            return $0
        }(AVPlayerViewController())

    }

    func updateUIViewController(_ uiViewController: UIViewControllerType, context: Context) {

    }
}

#Preview {
    LoopPlayerView(
        playerItem: AVPlayerItem(url: Bundle.main.url(forResource: "the_cat", withExtension: "mp4")!)
    )
}