Update inference.py

inference.py

@@ -122,6 +122,8 @@ if __name__ == "__main__":
 
     if args.is_long_video:
         window_size = int(np.sqrt(args.video_length))
+        if window_size > 4 :
+            window_size = 4
         sample = pipe.generate_long_video(args.prompt + POS_PROMPT, video_length=args.video_length, frames=pil_annotation, 
                     num_inference_steps=args.inference_steps, smooth_steps=args.smoother_steps, window_size=window_size,
                     generator=generator, guidance_scale=12.5, negative_prompt=NEG_PROMPT,