Update LTX-Video/ltx_video/pipelines/pipeline_ltx_video.py

LTX-Video/ltx_video/pipelines/pipeline_ltx_video.py

@@ -139,8 +139,8 @@ def retrieve_timesteps(
     num_inference_steps: Optional[int] = None,
     device: Optional[Union[str, torch.device]] = None,
     timesteps: Optional[List[int]] = None,
-    skip_initial_inference_steps: int = 0,
-    skip_final_inference_steps: int = 0,
+    skip_initial_inference_steps: Optional[int] = 0,
+    skip_final_inference_steps: Optional[int] = 0,
     **kwargs,
 ):
     """