Black screen using AVPlayer (both in simulator and in device)

Question

Using this code in an @IBAction of a button the video player opens up but it only shows a black screen. I can't figure out why. Thanks

if let path = Bundle.main.path(forResource: "Timelapse Stabilizzata", ofType: "mov") {
        let video = AVPlayer(url: URL(fileURLWithPath: path))
        let videoPlayer = AVPlayerViewController()


        videoPlayer.player = video

        present(videoPlayer, animated: true, completion: {
            video.play()
        })

Answer 1

Try to change UIwindowLevel , maybe there is a view appears above the player level

         if let path = Bundle.main.path(forResource: "Timelapse Stabilizzata", ofType: "mov") {
                let video = AVPlayer(url: URL(fileURLWithPath: path))
                let videoPlayer = AVPlayerViewController()

                videoPlayer.view.window?.windowLevel = 0
                videoPlayer.player = video
                present(videoPlayer, animated: true, completion: {
                    video.play()
                })
}