Update app.py

app.py

@@ -191,6 +191,8 @@ def preset_changed(preset):
             gr.update(visible=True),
             gr.update(visible=True),
         )
+        
+generator = torch.Generator(device="cuda").manual_seed(seed)
 
 # Load models
 vae = load_vae(vae_dir)
@@ -254,7 +256,6 @@ def generate_video_from_text(
         "media_items": None,
     }
 
-    generator = torch.Generator(device="cuda").manual_seed(seed)
 
     def gradio_progress_callback(self, step, timestep, kwargs):
         progress((step + 1) / num_inference_steps)