1 files changed, 1 insertions, 1 deletions
diff --git a/decoder.py b/decoder.py
index b5d198e..5b3178c 100644
--- a/decoder.py
+++ b/decoder.py
@@ -43,7 +43,7 @@ def find_corner(A, f):
     return np.average(np.where(mask), axis=1), np.average(A[mask], axis=0).astype(np.float64)
 
 
-if args.input.isdecimal():
+if isinstance(args.input, str) and args.input.isdecimal():
     args.input = int(args.input)
 cap = cv2.VideoCapture(args.input)
 data = None