Prepend character descriptions to global prompt

ltx_director.py

@@ -373,8 +373,23 @@ def _character_prompt_replacements(characters: list[dict]) -> dict[str, str]:
         for tag in tags:
             replacements[tag] = replacement
     return replacements
-
+
-
+
+def _prepend_character_descriptions(global_prompt: str, characters: list[dict] | None = None) -> str:
+    descriptions = [
+        (character.get("description", "") or "").strip()
+        for character in (characters or [])
+        if (character.get("description", "") or "").strip()
+    ]
+    if not descriptions:
+        return global_prompt or ""
+
+    prefix = ". ".join(descriptions)
+    if not (global_prompt or "").strip():
+        return prefix
+    return f"{prefix}. {global_prompt.strip()}"
+
+
 def _preprocess_prompts_with_characters(global_prompt, local_prompts, characters: list[dict] | None = None):
     """Invisibly swaps out @characterN/@charN/@alias tags with their character descriptions."""
     if "@" not in (global_prompt or "") and "@" not in (local_prompts or ""):
@@ -2084,6 +2099,7 @@ class LTXDirector(io.ComfyNode):
             image_cache=image_cache,
             input_dir=input_dir,
         )
+        global_prompt = _prepend_character_descriptions(global_prompt, characters)
         char_slot_images = [list(character.get("images") or []) for character in characters]
         char_images = [img for slot_images in char_slot_images for img in slot_images]