--- a/dupecheck.py	Mon Mar 09 12:19:29 2020 +0100
+++ b/dupecheck.py	Sun Nov 22 23:08:17 2020 +0100
@@ -74,7 +74,7 @@
                 title = RE_PARENTHESES.sub("", title)
 
                 self.filelist.append([title, filename, root, ext])
-            elif ext in ['.mkv', '.avi', '.mpg', '.mpeg', '.mp4', '.ogg', '.mp3', '.iso']:
+            elif ext in ['.mkv', '.avi', '.mpg', '.mpeg', '.mp4', '.flv', '.ogg', '.mp3', '.iso']:
                 title = filename[:-4].lower()
                 title = RE_PARENTHESES.sub("", title)
                 self.filelist.append([title, filename, root, ext])