Update app.py

app.py

@@ -26,6 +26,7 @@ function(text_input, url_params) {
 }
 """
 def load_video(vid):
+    os.system("yt-dlp -U")
     new_video_in = str(vid)
     capture = cv2.VideoCapture(new_video_in)
     fps = capture.get(cv2.CAP_PROP_FPS)