Camera capture timestamp delta

When using SDK v 2.0.0 and the XR workflow I was able to get the camera pose using the following sample script : Simple Camera Example | MagicLeap Developer Documentation

I replaced the RawVideoFrameAvailable function with the following snippet

    void RawVideoFrameAvailable(MLCamera.CameraOutput output, MLCamera.ResultExtras extras, MLCameraBase.Metadata metadataHandle)
    {
        if (output.Format == MLCamera.OutputFormat.RGBA_8888)
        {
            //Flips the frame vertically so it does not appear upside down.
            MLCamera.FlipFrameVertically(ref output);
            UpdateRGBTexture(ref _videoTextureRgb, output.Planes[0], _screenRendererRGB);
        }

        MLResult result = MLCVCamera.GetFramePose(extras.VCamTimestamp, out Matrix4x4 outMatrix);
        if (result.IsOk)
        {
            string cameraExtrinsics = "Camera Extrinsics";
            cameraExtrinsics += "Position " + outMatrix.GetPosition();
            cameraExtrinsics += "Rotation " + outMatrix.rotation;
            Debug.Log(cameraExtrinsics);
        }
    }