Video Capture

Getting Started

If you dont know how to use NRSDK. You can see this Quickstart for Android to have a quick start with NRSDK.

Import the NRSDK for First Person View

Import NRSDKForUnity_1.4.8.unitypackage in the package.

Open the Sample Scene

In the Unity Project window, you can find the CameraCaptureDemo sample in: Assets > NRSDK >Demos > RGBCamera-Record.

Build and Run the Sample App

See CameraCaptureController.cs , located in Assets > NRSDK > Demos > Record > Scripts > VideoCaptureLocalExample for an example on how to use the video capture.

// A video Capture Example
public class VideoCapture2LocalExample : MonoBehaviour
{
    /// <summary> The previewer. </summary>
 public NRPreviewer Previewer;
 public VideoRecordConfigPanel m_ConfigPanel;

 /// <summary> Save the video to Application.persistentDataPath. </summary>
 /// <value> The full pathname of the video save file. </value>
 public string VideoSavePath
 {
     get
     {
         string timeStamp = Time.time.ToString().Replace(".", "").Replace(":", "");
         string filename = string.Format("Nreal_Record_{0}.mp4", timeStamp);
         return Path.Combine(Application.persistentDataPath, filename);
     }
 }

 /// <summary> The video capture. </summary>
 NRVideoCapture m_VideoCapture = null;

 /// <summary> Starts this object. </summary>
 void Start()
 {
     CreateVideoCaptureTest();
 }

 /// <summary> Tests create video capture. </summary>
 void CreateVideoCaptureTest()
 {
     NRVideoCapture.CreateAsync(false, delegate (NRVideoCapture videoCapture)
     {
         NRDebugger.Info("Created VideoCapture Instance!");
         if (videoCapture != null)
         {
             m_VideoCapture = videoCapture;
         }
         else
         {
             NRDebugger.Error("Failed to create VideoCapture Instance!");
         }
     });
 }

 /// <summary> Starts video capture. </summary>
 public void StartVideoCapture()
 {
     if (m_VideoCapture != null)
     {
         CameraParameters cameraParameters = new CameraParameters();
         if (m_ConfigPanel == null)
         {
             Resolution cameraResolution = NRVideoCapture.SupportedResolutions.OrderByDescending((res) => res.width * res.height).First();
             cameraParameters.hologramOpacity = 0.0f;
             cameraParameters.frameRate = cameraResolution.refreshRate;
             cameraParameters.cameraResolutionWidth = cameraResolution.width;
             cameraParameters.cameraResolutionHeight = cameraResolution.height;
             cameraParameters.pixelFormat = CapturePixelFormat.BGRA32;
             // Set the blend mode.
             cameraParameters.blendMode = BlendMode.Blend;
             // Set audio state, audio record needs the permission of "android.permission.RECORD_AUDIO",
             // Add it to your "AndroidManifest.xml" file in "Assets/Plugin".
             cameraParameters.audioState = NRVideoCapture.AudioState.MicAudio;
         }
         else
         {
             cameraParameters = m_ConfigPanel.GetRecordConfigration();
         }

         m_VideoCapture.StartVideoModeAsync(cameraParameters, OnStartedVideoCaptureMode);
     }
 }

 /// <summary> Stops video capture. </summary>
 public void StopVideoCapture()
 {
     if (m_VideoCapture == null)
     {
         return;
     }

     NRDebugger.Info("Stop Video Capture!");
     m_VideoCapture.StopRecordingAsync(OnStoppedRecordingVideo);
     Previewer.SetData(m_VideoCapture.PreviewTexture, false);
 }

 /// <summary> Executes the 'started video capture mode' action. </summary>
 /// <param name="result"> The result.</param>
 void OnStartedVideoCaptureMode(NRVideoCapture.VideoCaptureResult result)
 {
     if (!result.success)
     {
         NRDebugger.Info("Started Video Capture Mode faild!");
         return;
     }

     NRDebugger.Info("Started Video Capture Mode!");
     m_VideoCapture.StartRecordingAsync(VideoSavePath, OnStartedRecordingVideo);
     // Set preview texture.
     Previewer.SetData(m_VideoCapture.PreviewTexture, true);
 }

 /// <summary> Executes the 'started recording video' action. </summary>
 /// <param name="result"> The result.</param>
 void OnStartedRecordingVideo(NRVideoCapture.VideoCaptureResult result)
 {
     if (!result.success)
     {
         NRDebugger.Info("Started Recording Video Faild!");
         return;
     }

     NRDebugger.Info("Started Recording Video!");
     if (m_ConfigPanel != null && m_ConfigPanel.UseGreenBackground)
     {
         // Set green background color.
         m_VideoCapture.GetContext().GetBehaviour().SetBackGroundColor(Color.green);
     }
 }

 /// <summary> Executes the 'stopped recording video' action. </summary>
 /// <param name="result"> The result.</param>
 void OnStoppedRecordingVideo(NRVideoCapture.VideoCaptureResult result)
 {
     if (!result.success)
     {
         NRDebugger.Info("Stopped Recording Video Faild!");
         return;
     }

     NRDebugger.Info("Stopped Recording Video!");
     m_VideoCapture.StopVideoModeAsync(OnStoppedVideoCaptureMode);
 }

 /// <summary> Executes the 'stopped video capture mode' action. </summary>
 /// <param name="result"> The result.</param>
 void OnStoppedVideoCaptureMode(NRVideoCapture.VideoCaptureResult result)
 {
     NRDebugger.Info("Stopped Video Capture Mode!");
 }
}

• Audio record needs the permission of “android.permission.RECORD_AUDIO”, Add it to your “AndroidManifest.xml” file in “Assets/Plugin”.
• The Previewer is used to preview live images in real time, for debugging purposes. Click the APP key of the controller to show or hide it.
• Click the Start button to start video capture.
• Click the Stop button to stop video capture. It will save the video file to “Application.persistentDataPath” path.