Update inference.py

inference.py

@@ -122,7 +122,7 @@ if __name__ == "__main__":
     if args.is_long_video:
         window_size = int(np.sqrt(args.video_length))
         sample = pipe.generate_long_video(args.prompt + POS_PROMPT, video_length=args.video_length, frames=pil_annotation, 
-                    num_inference_steps=50, smooth_steps=args.smoother_steps, window_size=window_size,
+                    num_inference_steps=25, smooth_steps=args.smoother_steps, window_size=window_size,
                     generator=generator, guidance_scale=12.5, negative_prompt=NEG_PROMPT,
                     width=args.width, height=args.height
                 ).videos