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Generation, training and LoRA distribution on Civitai are covered by Civitai’s own license agreement with MiniMax. If you download these weights and run them yourself, your use is instead governed by the MiniMax H3 Community License Agreement, whose grant excludes the European Union, the United Kingdom, the Republic of Korea and the United States of America.
MiniMax H3
🥁 LoraGeek Complex Prompt Generator - the Beatbox
Write your scene as a list of beats. One button builds the whole long, layered prompt and writes it straight into your video node, where you can read it and edit it.
Some of the best talking-video clips come from long, layered prompts: a scene line, numbered shots, a camera block, every action in order, every spoken line, the sound design. Writing that by hand each time is slow, and one mistake makes the model mumble.
The Beatbox
Each shot has one Beatbox. Write what happens in order, one beat per line. Actions and speech go in the same box, so the order is exactly what you wrote.
Speech is in "quotes", or written Mary says: ..., or Mary: ...
Everything else is an action
She sips her coffee.
She: "Ow, that's hot."
He: "Maybe blow on it."
She blows on it.
He: "Yeah, that's better."
The node writes it as First / Then / Then steps, and after every spoken line it adds "then she is quiet, lips closed" so the model knows the talking is over.
The Beatbox Camera - a field of buttons
A second panel ships with it and sits beside the generator. Click camera choices and the generator writes them into the prompt.
Look (cinematic, phone footage, documentary...), shot size, angle, placement
Camera moves (push in, pull out, pan, tilt, truck, arc, tracking, POV...) with size and speed
Focal length, aperture, depth of field, lighting
Over-the-shoulder on each speaker - every spoken line cuts behind the listener's shoulder
Click the i next to a section for a plain-English explanation of each button
Buttons marked with a star are in the official H3 prompt guide. The rest are plain descriptive English.
The right format
The prompt is written the way MiniMax H3's own guide describes: one block, [Shot N] markers, cut times like "At 00:03.500, the camera cuts to...", and speech in <d> tags with speaker IDs. Without the timestamps, later shots do not cut.
You can SEE the prompt
Press GENERATE PROMPT and the full prompt appears in your video node's own prompt box. Nothing is hidden and nothing is locked. Change one word ("left" to "right") and run.
The clip length is set for you
Talking-video models fill silence with mumbling. So the node counts the spoken words and the actions in your beats and sets the duration box on the video node to fit.
AUTO - fits the beats. MANUAL - you pick the seconds
Rough guide: 3.5 spoken words per second, half a second per action
A status line tells you what it set
What you fill in
Scene setup - where and when, written into every shot
Subjects - who is in it, one per line
Camera style - shows what the camera panel added (or type your own words)
4 Beatboxes - one per shot
Filler line - a tiny line for shots with no speech
Soundscape - real, specific sounds (feet on tile, a fan humming)
Why the filler line and the soundscape matter
A shot where nobody speaks is where H3 tends to babble. Give every shot something to say, even "Mm-hm", and give it real room sounds. Both help a lot.
Install
Download the zip and unzip it
Put the ComfyUI-ComplexPromptGenerator folder into ComfyUI/custom_nodes/
Restart ComfyUI, then hard-refresh the browser page (Ctrl+Shift+R)
No extra Python packages needed
The full step-by-step guide (GUIDE.md) is in the zip
How to use it
Double-click the canvas, type Complex Prompt Generator
The camera panel appears beside it on its own. Nothing to wire
Fill in the boxes, write your beats, click any camera buttons
Press GENERATE PROMPT
Check the prompt box on your video node, edit if you like, and run
It looks for the video node's prompt box and duration box. It works with the Image to Video (MiniMax H3) template. On another workflow it writes to the first prompt box it finds.
Good to know
It is a template, not an AI. It costs no VRAM and adds no extra model.
The detail in your beats is what makes the prompt good.
Written for MiniMax H3, but the prompt is plain text.
MIT licence. Made by LoraGeek.