Update app.py

app.py

@@ -77,8 +77,8 @@ def generate(
         min_cfg_scale=2, 
         max_cfg_scale=2, 
         contrast_enhance_scale=1.2
-    ).frames[0]
-    
+    )
+    model_manager.to(0)
     export_to_video(frames, video_path, fps=fps_id)
     
     return video_path, seed