swift - 保存视频以解析和播放

Question

所以我正在使用这个自定义类来录制我的视频 -- https://github.com/piemonte/PBJVision .我试图在我的 iOS 应用程序中录制视频，但我似乎无法获得正确的代码来将文件上传到我的解析服务器。一些事情:

• 在 PBJVision 类中，它允许您在录制视频后使用 NSURL(fileWithPath:videoPath) 访问 Assets 。

• 要访问 Assets 中的数据并保存到 Parse，我使用以下函数:

   func vision(vision: PBJVision, capturedVideo videoDict: [NSObject : AnyObject]?, error: NSError?) {
  if error != nil {
      print("Encountered error with video")
      isVideo = false
  } else {
      let currentVideo = videoDict
      let videoPath = currentVideo![PBJVisionVideoPathKey] as! String
      print("The video path is: \(videoPath)")
  
      self.player = Player()
      self.player.delegate = self
      self.player.view.frame = CGRect(x: cameraView.frame.origin.x, y: cameraView.frame.origin.y, width: cameraView.frame.width, height: cameraView.frame.height)
  
      self.player.playbackLoops = true
  
      videoUrl = NSURL(fileURLWithPath: videoPath)
      self.player.setUrl(videoUrl)
  
      self.cameraView.addSubview(self.player.view)
      self.player.playFromBeginning()
      nextButton.hidden = false
      isVideo = true
  
      let contents: NSData?
      do {
          contents = try NSData(contentsOfFile: videoPath, options: NSDataReadingOptions.DataReadingMappedAlways)
      } catch _ {
          contents = nil
      }
  
      print(contents)
  
      let videoObject = PFObject(className: "EventChatroomMessages")
      videoObject.setValue(user, forKey: "user")
      videoObject.setValue("uG7v2KWBQm", forKey: "eventId")
      videoObject.setValue(NSDate(), forKey: "timestamp")
  
      let videoFile: PFFile?
      do {
          videoFile = try PFFile(name: randomAlphaNumericString(26) + ".mp4", data: contents!, contentType: "video/mp4")
          print("VideoFile: \(videoFile)")
      } catch _ {
          print("error")
      }
  
      print(videoFile)
  
      videoObject.setValue(videoFile, forKey: "image")
      videoObject.saveInBackgroundWithBlock {
          (success: Bool, error: NSError?) -> Void in
          if success == true {
              ProgressHUD.showSuccess("Video Saved.", interaction: false)
              dispatch_async(dispatch_get_main_queue()) {
                  ProgressHUD.dismiss()
              }
          } else {
              ProgressHUD.showError("Error Saving Video.", interaction: false)
              dispatch_async(dispatch_get_main_queue()) {
                  ProgressHUD.dismiss()
              }
          }
      }
  }
  

然后我使用 UITableView 显示来自 Parse 的数据。以下是我如何从 Parse 中检索我的 Assets 并进入我的 AVPlayer(): //为 react 创建玩家 让玩家=玩家() player.delegate = self player.view.frame = CGRectMake(0.0, nameLabel.frame.origin.y + nameLabel.frame.size.height + 0.0, self.view.frame.width, 150) player.view.backgroundColor = UIColor.whiteColor()

    let video = message.objectForKey("image") as! PFFile
    let urlFromParse = video.url!
    print(urlFromParse)

    let url = NSURL(fileURLWithPath: video.url!)
    print(url)

    let playerNew = AVPlayer(URL: url!)
    let playerLayer = AVPlayerLayer(player: playerNew)
    playerLayer.frame = CGRectMake(0.0, nameLabel.frame.origin.y + nameLabel.frame.size.height + 0.0, self.view.frame.width, 150)
    cell.layer.addSublayer(playerLayer)
    playerLayer.backgroundColor = UIColor.whiteColor().CGColor
    playerNew.play()

我复制从 urlFromParse 返回的值(http://parlayapp.herokuapp.com/parse/files/smTrXDGZhlYQGh4BZcVvmZ2rYB9kA5EhPkGbj2R2/58c0648ae4ca9900f2d835feb77f165e_file.mp4)并将其粘贴到我的浏览器中，然后视频在浏览器中播放。我是否正确地假设文件已正确保存？

当我运行我的应用程序时，视频无法播放。对我做错了什么有什么建议吗？

Answer 1

我发现使用 pfFile.url 播放视频不起作用。您必须使用正确的扩展名 (mov) 将 PFFIle 中的 NSData 写入本地文件，然后使用本地文件作为源播放视频。