diff --git a/nbs/stable_video_v1_REST_API_alpha.ipynb b/nbs/stable_video_v1_REST_API_alpha.ipynb
index 1808603..8a06575 100644
--- a/nbs/stable_video_v1_REST_API_alpha.ipynb
+++ b/nbs/stable_video_v1_REST_API_alpha.ipynb
@@ -149,7 +149,11 @@
         "}\n",
         "host = f\"https://api.stability.ai/v2alpha/generation/image-to-video\"\n",
         "\n",
+        "# Note:\n",
+        "# Valid input images must be 576x1024, 768x768, or 1024x576\n",
+        "# The method image_to_valid_bytes will resize to the nearest aspect ratio\n",
         "init_image_bytes = image_to_valid_bytes(init_image)\n",
+        "\n",
         "image_mime_type = mimetypes.guess_type(init_image)[0]\n",
         "files = {\n",
         "    \"image\": (\"file\", init_image_bytes, image_mime_type),\n",