UIVideoAtPathIsCompatibleWithSavedPhotosAlbum无法打开文件Swift 3

Question

我正在创建一个文件路径并将其记录为：

filePath = documentsURL.appendingPathComponent("temp.MOV")
videoFileOutput.startRecording(toOutputFileURL: filePath, recordingDelegate: recordingDelegate)

然后我停止录音，然后

  let mediaLocation = (filePath).path
        if UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(mediaLocation) {
            UISaveVideoAtPathToSavedPhotosAlbum(mediaLocation, self, nil, nil)
        } else {
            print("Cannot find file to save")
            let player = AVPlayer(url: filePath)
            let playerController = AVPlayerViewController()
            playerController.showsPlaybackControls = true
            playerController.player = player
            present(playerController, animated: false) {
                player.play()
            }
        }

如果将媒体位置保持为String(describing: filePath)，则错误是“找不到文件”，但播放机将打开文件。如果使用上述代码，则错误为“无法打开”，但播放机将播放该文件。

完全错误是：

视频/var/mobile/Containers/Data/Application/B24F0CD8-479B-483D-AE20-0ED8040101EC/Documents/temp.MOV无法保存到保存的相册:错误Domain=AVFoundationErrorDomain代码=-11829“无法打开”UserInfo={NSLocalizedFailureReason=This媒体可能损坏。，NSLocalizedDescription=Cannot打开，NSURL=file:///var/mobile/Containers/Data/Application/B24F0CD8-479B-483D-AE20-0ED8040101EC/Documents/temp.MOV，NSUnderlyingError=0x170241ef0 {错误Domain=NSOSStatusErrorDomain代码=-12848 "(null)"}}

Answer 1

我已经解决了它-我在试图保存文件之前添加了一个延迟，而且它成功了。该守则现在内容如下：

let when = DispatchTime.now() + 0.1 // change 0.1 to desired number of seconds
        DispatchQueue.main.asyncAfter(deadline: when) {
            if UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(mediaLocation!) {
                UISaveVideoAtPathToSavedPhotosAlbum(mediaLocation!, self, nil, nil)
            } else {
                print("Cannot find file to save")
            }
        }