diff --git a/comfy_extras/nodes_lt.py b/comfy_extras/nodes_lt.py
index 52588920..ff3fe5cd 100644
--- a/comfy_extras/nodes_lt.py
+++ b/comfy_extras/nodes_lt.py
@@ -385,7 +385,7 @@ def encode_single_frame(output_file, image_array: np.ndarray, crf):
     container = av.open(output_file, "w", format="mp4")
     try:
         stream = container.add_stream(
-            "h264", rate=1, options={"crf": str(crf), "preset": "veryfast"}
+            "libx264", rate=1, options={"crf": str(crf), "preset": "veryfast"}
         )
         stream.height = image_array.shape[0]
         stream.width = image_array.shape[1]