add 4 min. duration to zero gpu allocation

app.py

@@ -34,7 +34,7 @@ def extract_frames(video_path, target_size=(224, 224)):
     cap.release()
     return frames
 
-@spaces.GPU
+@spaces.GPU(duration=240)
 def process_window(frames_window):
     """
     Process a window of frames and compute the average fall score.