Update app.py

app.py

@@ -1,3 +1,7 @@
-from streamlit_webrtc import webrtc_streamer
+import cv2
+while True:
+    cap = cv2.VideoCapture(0) # video capture source camera (Here webcam of laptop) 
+    ret,frame = cap.read() # return a single frame in variable `frame`
+    cv2.imshow('img1',frame) #display the captured image
 
-webrtc_streamer(key="sample")
+cap.release()