add len prints for frames after siammask

app.py

@@ -198,6 +198,8 @@ def track_and_mask(vid, original_frame, masked_frame):
     else:
         print("can't open the given input video file!")
 
+    print('Original Frame Count: ',len(original_frame_list))
+    print('Mask Frame Count: ',len(mask_list))
     return "output.avi"