PSA: Proper Prompt Structure Really Matters in H3
Boogertwilliams · reddit · 2026-08-20
A user discovered that adhering to the official ref2v prompt guide for MiniMax-H3 drastically improves video generation quality.
The Issue
Using random online prompt templates resulted in gibberish audio filler and incorrect character dialogue during longer video generations.
The Fix
The user fed the official VIDEOPROMPTWRITINGGUIDE to an LLM to restructure prompts according to specs.
The Result
- Before: Random gibberish, wrong speakers, poor emotional beats.
- After: Successfully generated 30x15s clips with perfect script adherence, no filler, and much better emotional reactions.
The takeaway is that model-specific prompt structures matter significantly more than generic prompting advice.
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