diff --git a/gui/OpenFaceOffline/MainWindow.xaml.cs b/gui/OpenFaceOffline/MainWindow.xaml.cs
index fa2a63b..d23b5f1 100644
--- a/gui/OpenFaceOffline/MainWindow.xaml.cs
+++ b/gui/OpenFaceOffline/MainWindow.xaml.cs
@@ -534,6 +534,7 @@ namespace OpenFaceOffline
                             video.OverlayLines = lines;
                             video.OverlayPoints = landmark_points;
                             video.OverlayEyePoints = eye_landmark_points;
+                            video.GazeLines = gaze_lines;
                         }
                         else
                         {
@@ -541,8 +542,8 @@ namespace OpenFaceOffline
                             video.OverlayLines.AddRange(lines.GetRange(0, lines.Count));
                             video.OverlayPoints.AddRange(landmark_points.GetRange(0, landmark_points.Count));
                             video.OverlayEyePoints.AddRange(eye_landmark_points.GetRange(0, eye_landmark_points.Count));
+                            video.GazeLines.AddRange(gaze_lines.GetRange(0, gaze_lines.Count));
                         }
-                        video.GazeLines = gaze_lines;
                     }
                 }
 
diff --git a/lib/local/CppInerop/RecorderInterop.h b/lib/local/CppInerop/RecorderInterop.h
new file mode 100644
index 0000000..3dec34e
--- /dev/null
+++ b/lib/local/CppInerop/RecorderInterop.h
@@ -0,0 +1,84 @@
+///////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2017, Carnegie Mellon University and University of Cambridge,
+// all rights reserved.
+//
+// ACADEMIC OR NON-PROFIT ORGANIZATION NONCOMMERCIAL RESEARCH USE ONLY
+//
+// BY USING OR DOWNLOADING THE SOFTWARE, YOU ARE AGREEING TO THE TERMS OF THIS LICENSE AGREEMENT.  
+// IF YOU DO NOT AGREE WITH THESE TERMS, YOU MAY NOT USE OR DOWNLOAD THE SOFTWARE.
+//
+// License can be found in OpenFace-license.txt
+
+//     * Any publications arising from the use of this software, including but
+//       not limited to academic journal and conference publications, technical
+//       reports and manuals, must cite at least one of the following works:
+//
+//       OpenFace: an open source facial behavior analysis toolkit
+//       Tadas Baltrušaitis, Peter Robinson, and Louis-Philippe Morency
+//       in IEEE Winter Conference on Applications of Computer Vision, 2016  
+//
+//       Rendering of Eyes for Eye-Shape Registration and Gaze Estimation
+//       Erroll Wood, Tadas Baltrušaitis, Xucong Zhang, Yusuke Sugano, Peter Robinson, and Andreas Bulling 
+//       in IEEE International. Conference on Computer Vision (ICCV),  2015 
+//
+//       Cross-dataset learning and person-speci?c normalisation for automatic Action Unit detection
+//       Tadas Baltrušaitis, Marwa Mahmoud, and Peter Robinson 
+//       in Facial Expression Recognition and Analysis Challenge, 
+//       IEEE International Conference on Automatic Face and Gesture Recognition, 2015 
+//
+//       Constrained Local Neural Fields for robust facial landmark detection in the wild.
+//       Tadas Baltrušaitis, Peter Robinson, and Louis-Philippe Morency. 
+//       in IEEE Int. Conference on Computer Vision Workshops, 300 Faces in-the-Wild Challenge, 2013.    
+//
+///////////////////////////////////////////////////////////////////////////////
+
+// Camera_Interop.h
+
+#pragma once
+
+#pragma unmanaged
+
+// Include all the unmanaged things we need.
+
+#include "RecorderOpenFace.h"
+
+#pragma managed
+
+namespace Utilities {
+
+	public ref class RecorderOpenFace
+	{
+	private:
+
+		// OpenCV based video capture for reading from files
+		Utilities::RecorderOpenFace* m_recorder;
+
+	public:
+
+		// Can provide a directory, or a list of files
+		RecorderOpenFace()
+		{
+		}
+
+
+		// Finalizer. Definitely called before Garbage Collection,
+		// but not automatically called on explicit Dispose().
+		// May be called multiple times.
+		!RecorderOpenFace()
+		{
+			// Automatically closes capture object before freeing memory.	
+			if (m_recorder != nullptr)
+			{
+				delete m_recorder;
+			}
+
+		}
+
+		// Destructor. Called on explicit Dispose() only.
+		~RecorderOpenFace()
+		{
+			this->!RecorderOpenFace();
+		}
+	};
+
+}