minimax-h3-prompting

Writes structured prompts for the MiniMax H3 video model in a local ComfyUI i2v workflow.

Updated Jul 18, 2026
One-click install
npx skills add https://github.com/devlitus/space-flight---combat-simulator --skill minimax-h3-prompting-devlitus
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: minimax-h3-prompting
Source: https://github.com/devlitus/space-flight---combat-simulator/tree/main/.codex/skills/minimax-h3-prompting
Command: npx skills add https://github.com/devlitus/space-flight---combat-simulator --skill minimax-h3-prompting-devlitus

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve? Writing prompts for the MiniMax H3 video model fails when everything is crammed into one paragraph, reference files lack declared roles, or audio instructions contradict each other. This Skill applies the official MiniMax prompt formula to the local ComfyUI video_minimax_h3_i2v workflow so generations match the intended scene, timing, and sound. ## Core Features & Use Cases - Official three-block formula: structures prompts as reference material notes, core idea, and scene-by-scene timeline with [0s-1.5s] style marks matched to the configured duration. - Common mistake prevention: covers undeclared file roles, contradictory music instructions, vague camera moves, and single-take vs. multi-shot narration errors. - Local workflow procedure: details editing the subgraph instance node 105 widgets_values prompt with python_embeded, uploading images via upload_file, validating, running, and verifying output MP4s. - Use Case: Given a product photo and a description, produce a 5-second cinematic commercial clip by writing a template-based prompt, syncing it into the workflow, and polling the job until the video renders. ## Quick Start Write a MiniMax H3 prompt for a 5-second cinematic video using my image at input/product.png and run it through the local i2v workflow.

Frequently Asked Questions about minimax-h3-prompting

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I write a prompt for the MiniMax H3 video model?▼

Use the official three-block formula: reference material notes, core idea, then a scene-by-scene description with time marks like [0s-1.5s]. Declare each uploaded file's role (e.g., "@image1 is the first frame") and describe what the camera sees concretely rather than abstract moods.

How to run the MiniMax H3 i2v workflow in ComfyUI?▼

Copy video_minimax_h3_i2v.json, upload the image with upload_file, point LoadImage slot 114.image to it, then edit the prompt in widgets_values[0] of instance node 105 using a python_embeded script. Validate with validate_workflow, run with run_workflow, and poll with the job wait action.

Why does set_workflow_slot not update my MiniMax H3 prompt?▼

Calling set_workflow_slot with 105/104.prompt only updates the inner subgraph definition, not the prompt that actually runs. The live prompt lives in widgets_values[0] of instance node 105, whose type is a UUID, so edit it with a Python script and keep both in sync.

Can MiniMax H3 generate audio and dialogue in videos?▼

Yes, H3 generates sound, so describe ambience, music, and effects per scene in the prompt. Write dialogue verbatim as "She says: ..." for lip sync, and end with "non_diegetic_music: N/A" if you want no background music.

What are common MiniMax H3 prompting mistakes to avoid?▼

Avoid single undifferentiated paragraphs, uploaded files without declared roles, requesting music while forbidding BGM, writing Shot 1/Shot 2 when you want one continuous take, and prompts too short to specify subject, scene, action, and style.