如何从 AVPlayer 录制到新控制器？

Question

我的 CameraViewController 中有这个 Delegate。它在完成捕获视频后调用 fileOutput。我想将捕获的视频的 url 传递到故事板中的下一个视图控制器，我在其中显示捕获的文件：

extension CameraViewController: AVCaptureFileOutputRecordingDelegate{
    func fileOutput(_ output: AVCaptureFileOutput, didFinishRecordingTo outputFileURL: URL, from connections: [AVCaptureConnection], error: Error?) {
        let destinationVC = PreviewViewController()
        if (error != nil) {
            print("Error recording movie: \(error!.localizedDescription)")
        } else {
            let videoRecorded = outputURL! as URL
        }
        outputURL = nil    }
    override func prepare(for segue: UIStoryboardSegue, sender: Any?){
        if segue.identifier == "showCapture_Segue" {
            let controller = segue.destination as! CameraPreviewController
            controller.movieURL = videoRecorded
        }
    }
}

这是我现在的代码。 Xcode 有很多投诉，这没有意义，因为我没有将 videoRecorded 从 fileOutput 函数传递到 segue 覆盖函数。

我知道要创建一个 segue 并将数据传递到另一个视图控制器，我会做类似

的事情

override func prepare(for segue: UIStoryboardSegue, sender: Any?){
        if segue.identifier == "showCapture_Segue" {
            let controller = segue.destination as! CameraPreviewController
            controller.movieURL = videoRecorded
        }
    }

但我不确定这如何与我的 AVCaptureFileOutputRecordingDelegate 集成。我怎样才能做到这一点？谢谢！

编辑：

class CameraViewController: UIViewController {
    var outputURL: URL!
    func startRecording() {

        if movieOutput.isRecording == false {

            let connection = movieOutput.connection(with: AVMediaType.video)
            if (connection?.isVideoOrientationSupported)! {
                connection?.videoOrientation = currentVideoOrientation()
            }

            if (connection?.isVideoStabilizationSupported)! {
                connection?.preferredVideoStabilizationMode = AVCaptureVideoStabilizationMode.auto
            }

            let device = activeInput.device
            if (device.isSmoothAutoFocusSupported) {
                do {
                    try device.lockForConfiguration()
                    device.isSmoothAutoFocusEnabled = false
                    device.unlockForConfiguration()
                } catch {
                    print("Error setting configuration: \(error)")
                }

            }

            //EDIT2: And I forgot this
            outputURL = tempURL()
            movieOutput.startRecording(to: outputURL, recordingDelegate: self)

        }
        else {
            stopRecording()
        }

    }
}

Answer 1

您应该声明为实例值

class CameraViewController {

   var videoRecorded:URL?

}

//

extension CameraViewController: AVCaptureFileOutputRecordingDelegate{
 func fileOutput(_ output: AVCaptureFileOutput, didFinishRecordingTo outputFileURL: URL, from connections: [AVCaptureConnection], error: Error?) {
    let destinationVC = PreviewViewController()
    if (error != nil) {
        print("Error recording movie: \(error!.localizedDescription)")
    } else {
          self.videoRecorded = outputURL as! URL
    }
    outputURL = nil    }
override func prepare(for segue: UIStoryboardSegue, sender: Any?){
    if segue.identifier == "showCapture_Segue" {
        let controller = segue.destination as! CameraPreviewController
        controller.movieURL = self.videoRecorded
    }
}
}

//

class CameraPreviewController {

   var movieURL:URL?

}

//

 self.performSegue(withIdentifier: "showCapture_Segue", sender: nil)

如何从 AVPlayer 录制到新控制器？

How to Segue from a AVPlayer recording to a new Controller?

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