Fix: Restructure Gradio UI and event handlers in app.py

app.py

@@ -138,8 +138,6 @@ with gr.Blocks(theme=gr.themes.Soft()) as demo:
 # BACKEND_VIDEO_URL = "https://your-modal-or-backend-url/process_video_analysis"
 # BACKEND_TOPIC_URL = "https://your-modal-or-backend-url/analyze_topic"
 
-demo.launch()
-
     with gr.Tab("Demo (for Manual Testing)"):
         gr.Markdown("### Manually test video URLs or paths for interpretation and observe the JSON response.")
         demo_interface.render()
@@ -150,7 +148,7 @@ demo.launch()
         
         with gr.Row():
             topic_input = gr.Textbox(label="Enter Topic", placeholder="e.g., 'best cat videos', 'Python programming tutorials'", scale=3)
-            max_videos_input = gr.Number(label="Max Videos to Analyze", value=3, minimum=1, maximum=5, step=1, scale=1) # Max 5 for UI, backend might support more
+            max_videos_input = gr.Number(label="Max Videos to Analyze", value=3, minimum=1, maximum=5, step=1, scale=1)
         
         topic_analysis_output = gr.JSON(label="Topic Analysis Results")
         
@@ -165,7 +163,7 @@ demo.launch()
         )
 
         def clear_topic_outputs():
-            return [None, 3, None] # topic_input, max_videos_input (reset to default), topic_analysis_output
+            return [None, 3, None]
         topic_clear_button.click(fn=clear_topic_outputs, inputs=[], outputs=[topic_input, max_videos_input, topic_analysis_output])
         
         gr.Examples(
@@ -181,6 +179,5 @@ demo.launch()
         )
         gr.Markdown("**Note:** This process involves searching for videos and then analyzing each one. It can take a significant amount of time, especially for multiple videos. The backend has a long timeout, but please be patient.")
 
-# Launch the Gradio application
-if __name__ == "__main__":
-    app.launch(debug=True, server_name="0.0.0.0")
+# Final launch of the Gradio app
+demo.launch()