Update app.py

app.py

@@ -57,11 +57,13 @@ with gr.Blocks() as demo:
             @spaces.GPU
             def gr_chatinterface_fn(message, history, state, video_path, mode):
                 global infer
+                yield 'initializing model, thanks for waiting...', state
                 if infer is None:
                     infer = _init_infer()
                 state['video_path'] = video_path
+                yield 'finished initialization, responding...', state
                 if mode == 'Conversation':
-                    return infer.video_qa(query=message, state=state)
+                    yield infer.video_qa(query=message, state=state)
                 else:
                     return 'waiting video input...'
             def gr_chatinterface_chatbot_clear_fn():