From 4e77db6a693451027b1b2bf9c32581da1b014aa8 Mon Sep 17 00:00:00 2001
From: Scott Wittenburg <scott.wittenburg@kitware.com>
Date: Thu, 18 Apr 2019 10:17:52 -0700
Subject: [PATCH] Fixes #105 where regex form file "files" parameter does not
 work

---
 vcs/Canvas.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/vcs/Canvas.py b/vcs/Canvas.py
index 399612636..ed5118597 100644
--- a/vcs/Canvas.py
+++ b/vcs/Canvas.py
@@ -4682,6 +4682,7 @@ def ffmpeg(self, movie, files, bitrate=1024, rate=None, options=None):
 
         """
         args = ["ffmpeg", "-y"]
+        test_file = None
 
         if rate is not None:
             args.extend(("-framerate", str(rate)))