Question

我正在尝试从捕获会话中镜像录制的视频。前置摄像头的视频预览显示了镜像版本，但是，当我去保存文件并播放时，捕获的视频实际上是镜像的。我正在使用Apple的AVCam演示作为参考，似乎无法弄清楚！请帮忙。

我尝试创建AVCaptureConnection并尝试设置.isVideoMirrored参数。但是，出现此错误：

无法添加到会话中，因为源和目标媒体类型不兼容'

我原本以为镜像视频会容易得多。我想我可能建立了错误的连接。当我调用.canAddConnection检查时，下面的代码实际上并没有“添加连接”。

var captureSession: AVCaptureSession!

override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated) 

        captureSession = AVCaptureSession()
//Setup Camera
 if let dualCameraDevice = AVCaptureDevice.default(.builtInDualCamera, for: .video, position: .front) {
                defaultVideoDevice = dualCameraDevice

            } else if let frontCameraDevice = AVCaptureDevice.default(.builtInWideAngleCamera, for: .video, position: .front) {
                // If the rear wide angle camera isn't available, default to the front wide angle camera.
                defaultVideoDevice = frontCameraDevice
            }
            guard let videoDevice = defaultVideoDevice else {
                print("Default video device is unavailable.")
               // setupResult = .configurationFailed
                captureSession.commitConfiguration()
                return
            }
            let videoDeviceInput = try AVCaptureDeviceInput(device: videoDevice)

if captureSession.canAddInput(videoDeviceInput) {
                captureSession.addInput(videoDeviceInput)
            }

let movieOutput = AVCaptureMovieFileOutput()
//Video Input variable for AVCapture Connection 
let videoInput: [AVCaptureInput.Port] = videoDeviceInput.ports

if captureSession.canAddOutput(movieOutput) {
                captureSession.beginConfiguration()
                captureSession.addOutput(movieOutput)
                captureSession.sessionPreset = .medium

然后，我尝试设置AVCapture连接并尝试设置用于镜像的参数。请告诉我是否有更简单的方法来镜像输出/回放。

 avCaptureConnection = AVCaptureConnection(inputPorts: videoInput, output: movieOutput)

 avCaptureConnection.isEnabled = true
 //Mirror the capture connection?
 avCaptureConnection.automaticallyAdjustsVideoMirroring = false
 avCaptureConnection.isVideoMirrored = false
 //Check if we can add a connection
 if captureSession.canAddConnection(avCaptureConnection) {
 //Add the connection                  
 captureSession.addConnection(avCaptureConnection)
  }

  captureSession.commitConfiguration()
  self.movieOutput = movieOutput

 setupLivePreview()

        }
  }

在代码中与IBAaction连接的其他地方，我初始化了录音

// Start recording video to a temporary file.
    let outputFileName = NSUUID().uuidString
    let outputFilePath = (NSTemporaryDirectory() as NSString).appendingPathComponent((outputFileName as NSString).appendingPathExtension("mov")!)
    print("Recording in tap function")

    movieOutput.startRecording(to: URL(fileURLWithPath: outputFilePath), recordingDelegate: self)

我认为我没有正确使用AVCaptureConnection，尤其是因为错误指出媒体类型不兼容。如果有实现此功能的正确方法，请告诉我。也可以听取建议，以更轻松地镜像播放。谢谢！

Swift-录制的视频镜像在前置摄像头上-如何翻转？

0 个答案: