Update app.py

app.py

@@ -1181,7 +1181,7 @@ with gr.Blocks(title="LTX 2.3 Sync", css=css, theme=purple_citrus) as demo:
                         label="Duration (s)", minimum=1.0, maximum=15.0, value=3.0, step=0.5,
                     )
                     auto_describe = gr.Checkbox(
-                        label="Auto-describe motion", value=True,
+                        label="Auto-describe motion", value=False, visible=False,
                         info="Use AI to describe the video's motion as a prompt",
                     )