ComfyUI nodes that rewrite a short prompt into a structured MiniMax-H3 audio-video description, fully local: the LightX2V Prompt Rewriter LoRAs on Qwen3.6-27B or on multimodal Qwen3-VL-8B, which reads the reference frames itself, or MiniMax's own writing guide on any small GGUF for T2VA, I2VA, FL2VA, L2VA and Ref2VA, with a multimodal captioner for the reference assets - or one universal node that describes the references and writes the prompt together, with their order a widget.
https://github.com/pytraveler/MiniMax-H3-Prompt-Rewriter-ComfyUI
git clone https://github.com/pytraveler/MiniMax-H3-Prompt-Rewriter-ComfyUI
comfy node install minimax-h3-prompt-rewriter