added warning about video length limit

app.py

@@ -134,7 +134,8 @@ with gr.Blocks(css=css) as demo:
             <p style="text-align: center;">
             This space is specifically designed for upscaling content made from <br />
             <a href="https://huggingface.co/spaces/fffiloni/zeroscope">the zeroscope_v2_576w space</a> using vid2vid. <br />
-            Remember to use the same prompt that was used to generate the original clip.
+            Remember to use the same prompt that was used to generate the original clip.<br />
+            For demo purpose, video length is limited to 3 seconds.
             </p>
             
             [![Duplicate this Space](https://huggingface.co/datasets/huggingface/badges/raw/main/duplicate-this-space-sm.svg#center)](https://huggingface.co/spaces/fffiloni/zeroscope-XL?duplicate=true)