gistfile1.swift

class A: NSViewController {
    
    var bgMovie: AVPlayerView = AVPlayerView()
    var fileName: String = "Water_Demand_Forecasting"
    
    @IBOutlet var player: AVPlayerView!
    
    @IBOutlet var ZButton: NSButton!
    
    extension NSView {
        func bringSubviewToFront(view: NSView) {
            view.removeFromSuperview()
            self.view.addSubview(view)
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        player.bringSubviewToFront(ZButton)
        
        player.addSubview(ZButton)
        
        player.wantsLayer = true
        
        playVideo(player, fileName: "Water_Demand_Forecasting")
    }