Update app.py

app.py

@@ -137,7 +137,7 @@ c = os.path.join(os.path.dirname(__file__), "data/c.mp4")  # Video
 
 
 demo = gr.Interface(
-    fn=lambda x: x,
+    fn=detect_video,
     inputs=gr.Video(),
     outputs=gr.Video(),
     examples=[