added video rec feature

scripts/ppe.py

@@ -356,7 +356,7 @@ class Ppe(ModelWrapper):
         # a frame of above defined The output
         # is stored in 'filename.avi' file.
         result = cv2.VideoWriter(file_name,
-                                 cv2.VideoWriter_fourcc(*'MJPG'),
+                                 cv2.VideoWriter_fourcc(*'H264'),
                                  10, size)
         return result