如何保存我录制的视频？

Question

我无法保存我正在录制的视频。我可以拍摄，但我无法保存，只是想在图书馆拍摄和录制视频。

任何人都可以帮助我吗？

  //My Library

  import UIKit;
  import MobileCoreServices

  class LibraryViewController: UIViewController, UINavigationControllerDelegate,UIImagePickerControllerDelegate {

@IBOutlet weak var myRecord: UIImageView!
@IBAction func aBottonPlay(sender: AnyObject) {
    var catchVideo = UIImagePickerController()
    catchVideo.delegate = self
    catchVideo.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
    catchVideo.mediaTypes = [kUTTypeMovie]
    self.presentViewController(catchVideo, animated: true, completion: nil)
}
override func viewDidLoad() {
    super.viewDidLoad()

    // Do any additional setup after loading the view.
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage!, editingInfo: [NSObject : AnyObject]!) {
    myRecord.image = image
    self.dismissViewControllerAnimated(true, completion: nil)

}
}

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