ios Swift - 拍摄的视频不宽

Question

我使用的是Swift 2.3。

我正在创建一个可以录制和播放视频的应用。我遇到的问题是录制视频的播放以非常窄的宽度显示（参见屏幕截图）。

我认为问题与视频的捕获方式有关。

如何让播放使用整个视图而不会扭曲它？

我提供了4项供审核：

1. captureVideo（），用于启动摄像头捕获视频
2. playVideo（），用于播放刚捕获的视频。请注意，在捕获视频并将其用于播放时，会设置self.videoAsset
3. 保存视频的扩展程序
4. 保存视频时调用的videoWasSavedSuccessfully（）方法。此方法设置self.videoAsset，用于播放视频

1。 captureVideo（）
捕获视频的方法

private func captureVideo() {
if (UIImagePickerController.isSourceTypeAvailable(.Camera))  
  {

    if   UIImagePickerController.availableCaptureModesForCameraDevice(.Rear) != nil

  {

    self.howWasVideoProvided = .TakenWithCamera

    self.imagePickerController.sourceType = .Camera
    self.imagePickerController.mediaTypes = [kUTTypeMovie as String]
    self.imagePickerController.cameraCaptureMode = UIImagePickerControllerCameraCaptureMode.Video
    self.imagePickerController.videoMaximumDuration = Globals.videoMaximumDuration

    self.presentViewController(self.imagePickerController, animated: true, completion: {})
  }
}

2。的playVideo（）
使用self.videoAsset播放视频的方法，该视频在保存视频时设置

@IBAction func playVideo(sender: UIButton)

{

  if self.videoAsset != nil
  {
    let playerItem = AVPlayerItem(asset: self.videoAsset!)

    // Play the video
    let player = AVPlayer(playerItem: playerItem)

    let playerViewController = AVPlayerViewController()
    playerViewController.player = player

    self.presentViewController(playerViewController, animated: true, completion: { () -> Void in
      playerViewController.player!.play()

    })

  }
}

第3。保存视频的扩展程序
当调用self.videoWasSavedSuccessfully（）时，它将设置self.videoAsset，用于播放视频

extension MaintainVideoContentTableViewController:     UIImagePickerControllerDelegate, UINavigationControllerDelegate

{

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject])

{

if let videoNSURL = (info[UIImagePickerControllerMediaURL] as? NSURL)
{
  let videoAsset = AVAsset(URL: videoNSURL)

  let duration = videoAsset.duration

  if round(CMTimeGetSeconds(duration)) <= Globals.videoMaximumDuration
  {
    if let relativePath = videoNSURL.relativePath
    {
      // Save video to the main photo album
      let selectorToCall = #selector(MaintainVideoContentTableViewController.videoWasSavedSuccessfully(_:didFinishSavingWithError:context:))

      self.videoNSURL = videoNSURL

      if self.howWasVideoProvided == .TakenWithCamera
      {
        UISaveVideoAtPathToSavedPhotosAlbum(relativePath, self, selectorToCall, nil)
      }

      self.imagePickerController.dismissViewControllerAnimated(true, completion: {
        // Anything you want to happen when the user saves an video
      })
    }
  }
}
}
}

4。 videoWasSavedSuccessfully（）
保存视频时调用的方法。它将设置self.videoAsset，用于播放视频

func videoWasSavedSuccessfully(video: String, didFinishSavingWithError     error: NSError!, context: UnsafeMutablePointer<()>)


{
    if error == nil {
        if let videoNSURL = self.videoNSURL
        {
        self.videoAsset = AVAsset(URL: videoNSURL)
        }
    }
}