Update app.py

app.py

@@ -31,7 +31,11 @@ face_names = []
 s = True
 
 while True:
-    _, frame = video_capture.read()
+    ret, frame = video_capture.read()
+    
+    if not ret:
+        continue
+
     small_frame = cv2.resize(frame, (0, 0), fx=0.25, fy=0.25)
     rgb_small_frame = small_frame[:, :, ::-1]