From 8a5ac527e60fcd48ec228d309d49ab28ac79def8 Mon Sep 17 00:00:00 2001
From: comfyanonymous <121283862+comfyanonymous@users.noreply.github.com>
Date: Mon, 22 Sep 2025 14:26:58 -0700
Subject: [PATCH] Fix bug with WanAnimateToVideo node. (#9988)

---
 comfy_extras/nodes_wan.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/comfy_extras/nodes_wan.py b/comfy_extras/nodes_wan.py
index b1e9babb5..6c16a2673 100644
--- a/comfy_extras/nodes_wan.py
+++ b/comfy_extras/nodes_wan.py
@@ -1210,7 +1210,7 @@ class WanAnimateToVideo(io.ComfyNode):
                 background_video = background_video[video_frame_offset:]
                 background_video = comfy.utils.common_upscale(background_video[:length].movedim(-1, 1), width, height, "area", "center").movedim(1, -1)
                 if background_video.shape[0] > ref_images_num:
-                    image[ref_images_num:background_video.shape[0] - ref_images_num] = background_video[ref_images_num:]
+                    image[ref_images_num:background_video.shape[0]] = background_video[ref_images_num:]
 
         mask_refmotion = torch.ones((1, 1, latent_length * 4, concat_latent_image.shape[-2], concat_latent_image.shape[-1]), device=mask.device, dtype=mask.dtype)
         if continue_motion is not None: