CODEWITHSUNDEEP
iosswiftavfoundation
Mike Schmidt
Mike Schmidt

Reputation: 1065

Recording One Second Videos Swift?

I am using AVCaptureFileOutputRecordingDelegate to record video. I would like to save one second of video, then change the file path and save the next second somewhere else.

Is this possible? Is there some sort of timer I would have to set up? Below is the code in my record function: 

 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)

Here is the code in which I set up the output record controller and everything:

override func viewWillAppear(_ animated: Bool) {
      let deviceDiscoverySession = AVCaptureDeviceDiscoverySession(deviceTypes: [AVCaptureDeviceType.builtInDuoCamera, AVCaptureDeviceType.builtInTelephotoCamera,AVCaptureDeviceType.builtInWideAngleCamera], mediaType: AVMediaTypeVideo, position: AVCaptureDevicePosition.back)

    for device in (deviceDiscoverySession?.devices)!{
        if(device.position == AVCaptureDevicePosition.back){

            do{
                let input = try AVCaptureDeviceInput(device: device )

                if captureSession.canAddInput(input){

                    captureSession.addInput(input)

                }

               // sessionOutput.videoSettings = [(kCVPixelBufferPixelFormatTypeKey as NSString) : NSNumber(value: kCVPixelFormatType_420YpCbCr8BiPlanarFullRange as UInt32)]

                sessionOutput.alwaysDiscardsLateVideoFrames = true

                if(captureSession.canAddOutput(sessionOutput) == true){
                    captureSession.addOutput(sessionOutput)

                    let previewLayer: AVCaptureVideoPreviewLayer = {
                        let preview =  AVCaptureVideoPreviewLayer(session: self.captureSession)
                        preview?.bounds = CGRect(x: 0, y: 0, width: self.view.bounds.width, height: self.view.bounds.height)
                        preview?.position = CGPoint(x: self.view.bounds.midX, y: self.view.bounds.midY)
                        preview?.videoGravity = AVLayerVideoGravityResize
                        return preview!
                    }()

                    view.layer.insertSublayer(previewLayer, at: 0)

                    output = AVCaptureMovieFileOutput()
                    let maxDuration = CMTimeMakeWithSeconds(180, 30)
                    output.maxRecordedDuration = maxDuration
                    captureSession.addOutput(output)



                }

                captureSession.commitConfiguration()

            }

            catch{
                print("Error")
            }


        }

    }

    let deviceDiscoverySession2 = AVCaptureDeviceDiscoverySession(deviceTypes: [AVCaptureDeviceType.builtInMicrophone], mediaType: AVMediaTypeAudio, position: AVCaptureDevicePosition.unspecified)

    for device in (deviceDiscoverySession2?.devices)!{


        do{
            let input = try AVCaptureDeviceInput(device: device )

            if captureSession.canAddInput(input){

                captureSession.addInput(input)

            }



        captureSession.commitConfiguration()

        }

        catch{
            print("Error")
        }





}

}

Upvotes: 1

Views: 357

Answers (1)

Gordon Childs
Gordon Childs

Reputation: 36084

On Mac OS X AVCaptureMovieFileOutput can do what you want. From a comment in the superclass AVCaptureFileOutput:

File outputs can start recording to a new file using the startRecordingToOutputFileURL:recordingDelegate: method. On successive invocations of this method on Mac OS X, the output file can by changed dynamically without losing media samples.

On iOS you'll have to drop back to a combination of AVCaptureVideoDataOutput, AVCaptureAudioDataOutput and AVAssetWriters that you create, start and stop for each segment.

It's not the easiest task. What are you trying to achieve? Could you instead record to a single file then split it into segments in a post-processing phase?

Upvotes: 1

Related Questions