Update app.py

app.py

@@ -252,6 +252,11 @@ with gr.Blocks() as demo:
         outputs=[extract_glb_btn, extract_gs_btn],
     )
 
+    video_output.clear(
+        lambda: tuple([gr.Button(interactive=False), gr.Button(interactive=False)]),
+        outputs=[extract_glb_btn, extract_gs_btn],
+    )
+
     extract_glb_btn.click(
         extract_glb,
         inputs=[output_buf, mesh_simplify, texture_size],