--- a/dupecheck.py	Sat Nov 25 16:51:08 2017 +0100
+++ b/dupecheck.py	Tue Nov 28 19:02:01 2017 +0100
@@ -24,6 +24,9 @@
         elif filename.endswith(".mkv"):
             title = filename[:-4].lower()
             FILELIST.append([title, filename, root])
+        elif filename.endswith(".mp4"):
+            title = filename[:-4].lower()
+            FILELIST.append([title, filename, root])
 print("%i files found, running duplicate testing loop" % len(FILELIST))
 
 listlen = len(FILELIST)