Update app.py

app.py

@@ -10,7 +10,9 @@ temporary_location = False
 
 def capture_video_frames():
     video_file = st.file_uploader('video', type = ['mp4'])
-    while True:
+    cap = cv2.VideoCapture(video_file)
+    
+    while cap.isOpened():
         ret, frame = cap.read()
         yield frame