Update app.py

app.py

@@ -86,8 +86,8 @@ def generate_video(prompt, image=None, duration=10, guidance_scale=9, video_guid
                 prompt=prompt,
                 num_inference_steps=[20, 20, 20],
                 video_num_inference_steps=[10, 10, 10],
-                height=768,
-                width=1280,
+                height=320,
+                width=480,
                 temp=temp,
                 guidance_scale=guidance_scale,
                 video_guidance_scale=video_guidance_scale,