ios - 将视频保存到相机胶卷时出错？ [ swift ]

Question

我有一个功能，我想用它来将视频保存到相机胶卷。出于某种原因，我停止录制后没有任何反应？它不会将其保存到相机胶卷或给出除

以外的任何错误

Error Domain=NSCocoaErrorDomain Code=-1 "(null)"

这是我的代码:

@IBAction func record(_ sender: UIButton) {

    if recordingInProgress{
        output.stopRecording()
        recordingLabel.textColor = UIColor.rgb(red: 173, green: 173, blue: 173)
        PHPhotoLibrary.shared().performChanges({
            PHAssetChangeRequest.creationRequestForAssetFromVideo(atFileURL: self.outputURL as URL)
        }) { saved, error in
            if saved {
                let alertController = UIAlertController(title: "Your video was successfully saved", message: nil, preferredStyle: .alert)
                let defaultAction = UIAlertAction(title: "OK", style: .default, handler: nil)
                alertController.addAction(defaultAction)
                self.present(alertController, animated: true, completion: nil)
            }
        }
    }


    else{
        let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0] as NSString
        let outputPath = "\(documentsPath)/output.mov"
        outputURL = NSURL(fileURLWithPath: outputPath)
        output.startRecording(toOutputFileURL: outputURL as URL!, recordingDelegate: self)
        recordingLabel.textColor = UIColor.rgb(red: 250, green: 3, blue: 33)
    }

    recordingInProgress = !recordingInProgress


}

Answer 1

您在调用 stopRecording 后访问视频文件的时间过早。如前所述here您应该只尝试在 capture(_:didFinishRecordingToOutputFileAt:fromConnections:error:) 委托(delegate)回调中使用 URL，因为一旦您要求停止录制，录制就需要完成对文件的任何写入.

您需要将您的照片库调用移动到该委托(delegate)方法中:

func capture(_ captureOutput: AVCaptureFileOutput!, didFinishRecordingToOutputFileAt outputFileURL: URL!, fromConnections connections: [Any]!, error: Error!) {
    // PHPhotoLibrary.shared().performChanges...
}