Question by Afamuefuna · Feb 27, 2020 at 11:04 PM · unity 5 ios augmented-reality

How do I add a screen recorder in my AR/VR/Game in unity without using an asset?

Hello everyone, please how do I add a screen recording Functionality on my AR app? I have tried using this script VideoCapture below but it gave me an error plus I do not know if it will achieve what I wanted

 using UnityEngine;
 using System.Collections;
 using System.Linq;
 using UnityEngine.Windows.WebCam;
 
 public class VideoCaptureExample : MonoBehaviour
 {
     static readonly float MaxRecordingTime = 5.0f;
 
     VideoCapture m_VideoCapture = null;
     float m_stopRecordingTimer = float.MaxValue;
 
     // Use this for initialization
     void Start()
     {
         StartVideoCaptureTest();
     }
 
     void Update()
     {
         if (m_VideoCapture == null || !m_VideoCapture.IsRecording)
         {
             return;
         }
 
         if (Time.time > m_stopRecordingTimer)
         {
             m_VideoCapture.StopRecordingAsync(OnStoppedRecordingVideo);
         }
     }
 
     void StartVideoCaptureTest()
     {
         Resolution cameraResolution = VideoCapture.SupportedResolutions.OrderByDescending((res) => res.width * res.height).First();
         Debug.Log(cameraResolution);
 
         float cameraFramerate = VideoCapture.GetSupportedFrameRatesForResolution(cameraResolution).OrderByDescending((fps) => fps).First();
         Debug.Log(cameraFramerate);
 
         VideoCapture.CreateAsync(false, delegate(VideoCapture videoCapture)
         {
             if (videoCapture != null)
             {
                 m_VideoCapture = videoCapture;
                 Debug.Log("Created VideoCapture Instance!");
 
                 CameraParameters cameraParameters = new CameraParameters();
                 cameraParameters.hologramOpacity = 0.0f;
                 cameraParameters.frameRate = cameraFramerate;
                 cameraParameters.cameraResolutionWidth = cameraResolution.width;
                 cameraParameters.cameraResolutionHeight = cameraResolution.height;
                 cameraParameters.pixelFormat = CapturePixelFormat.BGRA32;
 
                 m_VideoCapture.StartVideoModeAsync(cameraParameters,
                     VideoCapture.AudioState.ApplicationAndMicAudio,
                     OnStartedVideoCaptureMode);
             }
             else
             {
                 Debug.LogError("Failed to create VideoCapture Instance!");
             }
         });
     }
 
     void OnStartedVideoCaptureMode(VideoCapture.VideoCaptureResult result)
     {
         Debug.Log("Started Video Capture Mode!");
         string timeStamp = Time.time.ToString().Replace(".", "").Replace(":", "");
         string filename = string.Format("TestVideo_{0}.mp4", timeStamp);
         string filepath = System.IO.Path.Combine(Application.persistentDataPath, filename);
         filepath = filepath.Replace("/", @"\");
         m_VideoCapture.StartRecordingAsync(filepath, OnStartedRecordingVideo);
     }
 
     void OnStoppedVideoCaptureMode(VideoCapture.VideoCaptureResult result)
     {
         Debug.Log("Stopped Video Capture Mode!");
     }
 
     void OnStartedRecordingVideo(VideoCapture.VideoCaptureResult result)
     {
         Debug.Log("Started Recording Video!");
         m_stopRecordingTimer = Time.time + MaxRecordingTime;
     }
 
     void OnStoppedRecordingVideo(VideoCapture.VideoCaptureResult result)
     {
         Debug.Log("Stopped Recording Video!");
         m_VideoCapture.StopVideoModeAsync(OnStoppedVideoCaptureMode);
     }
 }

This is the error

ArgumentNullException: Value cannot be null. Parameter name: source

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