Update app.py

app.py

@@ -34,7 +34,7 @@ if video_file is not None or use_webcam:
     if video_file is not None:
         video = cv2.VideoCapture(video_file.name)
     else:
-        video = cv2.VideoCapture(0)  # Use webcam
+        video = cv2.VideoCapture(1)  # Use webcam
 
     while True:
         ret, frame = video.read()