MPMovieVIewController shows blank screen

Question

Yep, this is my code:

import Foundation

class FbVideoPostDetailedViewController: FbDetailedPostViewController {

    var mc = MPMoviePlayerController()

    override func viewDidLoad() {
        super.viewDidLoad()

        let movieURL = NSURL(string: "http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4")
        self.mc = MPMoviePlayerController.init(contentURL: movieURL)
        self.mc.allowsAirPlay = false
        self.mc.shouldAutoplay = true
        self.mc.view.frame = UIScreen.mainScreen().bounds
        self.mc.controlStyle = MPMovieControlStyle.Embedded
        self.view.addSubview(self.mc.view)
        self.mc.fullscreen = true
        self.mc.play()

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

}

I'm just trying to open video in fullscreen mode. Please guide me in right way because FbVideoPostDetailedViewController appears only as a blank screen and video wasn't play.

I have few outlets in FbDetailedPostViewController but I want even to start play in fullscreen at this point.