diff --git a/frames_to_video.py b/frames_to_video.py
index 1e911a6..a9a49ac 100644
--- a/frames_to_video.py
+++ b/frames_to_video.py
@@ -31,7 +31,7 @@ def pairs(iterable):
 interpolation_frames = int(argv[3])
 
 # get the frames from the given directory in sorted order
-frames = [filename for filename in listdir(directory) if '.png' in filename]
+frames = [filename for filename in listdir(directory) if '.jpg' in filename]
 # use the integer filename value to account for the lack of 0 padding
 frames = sorted(frames, key=lambda x: int(re.sub(r'[^0-9]+', "", x)))
 # open the frames as images