diff --git a/aruco_realtime.py b/aruco_realtime.py
index 7eaaab7..e7940c5 100644
--- a/aruco_realtime.py
+++ b/aruco_realtime.py
@@ -4,14 +4,14 @@ import cv2
 from cv2 import aruco
 
 # Define the ArUco dictionary
-aruco_dict = cv2.aruco.getPredefinedDictionary(cv2.aruco.DICT_6X6_250)
+aruco_dict = cv2.aruco.getPredefinedDictionary(cv2.aruco.DICT_4X4_50)
 aruco_params = cv2.aruco.DetectorParameters()
 
 # Specify the RTSP URL
-rtsp_url = sys.argv[1]
+# rtsp_url = sys.argv[1]
 
-# Capture the video stream from the RTSP URL
-cap = cv2.VideoCapture(rtsp_url)
+# webcam:
+cap = cv2.VideoCapture(0)
 
 while True:
     ret, frame = cap.read()
@@ -32,7 +32,7 @@ while True:
         frame = cv2.aruco.drawDetectedMarkers(frame, corners, ids)
 
     # Scale frame in half
-    frame = cv2.resize(frame, (0, 0), fx=0.5, fy=0.5)
+    # frame = cv2.resize(frame, (0, 0), fx=0.5, fy=0.5)
 
     # Display the frame
     cv2.imshow("Frame", frame)
@@ -44,3 +44,7 @@ while True:
 # Release the capture object and close all OpenCV windows
 cap.release()
 cv2.destroyAllWindows()
+
+
+if __name__ == '__main__':
+    pass
diff --git a/bot.py b/bot.py
index b699f1f..46367fc 100644
--- a/bot.py
+++ b/bot.py
@@ -95,7 +95,7 @@ class Bot:
         # Iterate until we find all 4 aruco markers or timeout
         aruco_corners = {}
         annotated_image = None
-        aruco_dict = aruco.getPredefinedDictionary(aruco.DICT_6X6_250)
+        aruco_dict = aruco.getPredefinedDictionary(aruco.DICT_4X4_50)
         aruco_params = aruco.DetectorParameters()
 
         t0 = time.time()