Update app.py

app.py

@@ -23,11 +23,8 @@ class GradioBackend:
 
     def to(self, device):
         self.infer.model.to(device)
-
-gradio_backend = GradioBackend()
             
 with gr.Blocks() as demo:
-
     gr.Markdown("## LiveCC Real-Time Commentary and Conversation - Gradio Demo")
     gr.Markdown("### [LiveCC: Learning Video LLM with Streaming Speech Transcription at Scale (CVPR 2025)](https://showlab.github.io/livecc/)")
     gr.Markdown("1️⃣ Select Mode, Real-Time Commentary (LiveCC) or Conversation (Common QA)")
@@ -38,6 +35,9 @@ with gr.Blocks() as demo:
     gr_video_state = gr.JSON({}, visible=False) # only record video state, belong to gr_state but lightweight
     gr_static_trigger = gr.Number(value=0, visible=False) # control start streaming or stop
     gr_dynamic_trigger = gr.Number(value=0, visible=False) # for continuous refresh 
+
+    gradio_backend = GradioBackend()
+    
     with gr.Row():
         with gr.Column():
             gr_video = gr.Video(