Capture Still Images from Video and add to a View: Swift 2

gistfile1.swift

        // MARK: THANKS TO: http://stackoverflow.com/questions/4294996/get-uiimage-from-the-calayer-attached-to-avplayer-extract-frame-from-video-play
        func finshedCapture(im:CGImage?, view:UIView, error:NSError?)  {
            if let img = im {
                print("OK")
                addImageViewWithImage(img, toView: view)
            }
            else {
                print("Fail")
            }
        }
        
        func addImageViewWithImage(img: CGImage, toView view:UIView) {
            dispatch_async(dispatch_get_main_queue(), {
                let imgView = UIImageView(image: UIImage(CGImage: img))
                view.addSubview(imgView)
            })
        }

      
        // MARK: THANKS TO: http://stackoverflow.com/questions/4001755/trying-to-understand-cmtime-and-cmtimemake
        func captureFrame(url:NSURL, timeInSeconds time:Int64, addToView view:UIView) {
            let generator = AVAssetImageGenerator(asset: AVAsset(URL: url))
            let tVal = NSValue(CMTime: CMTimeMake(time, 1))
            generator.generateCGImagesAsynchronouslyForTimes([tVal], completionHandler: {(_, im:CGImage?, _, _, e:NSError?) in finshedCapture(im, view:view, error:e)})}
            
        // implementation
        if let url = NSBundle.mainBundle().URLForResource("MYMOVIE", withExtension: "MP4") {
            captureFrame(url, timeInSeconds: 12, addToView:self.view)
        }