prompt-expanderlisted
Install: claude install-skill raphaelbgr/ai-video-prompting
# Prompt expander
Turn a rough idea into a complete, generation-ready cinematic prompt — by deliberately
deciding **every dimension a clip can express**, then writing only the relevant choices
as natural prose.
Written against **Gemini Omni Flash** in Google Flow (~10s clips with synced audio;
accepts text + reference image/audio/video; supports multi-turn conversational editing).
The dimension model transfers to any video generator; the mechanics in §B of the audio
reference are Omni-specific.
**When to use:** someone hands you a logline and wants it "expanded" · you are writing
or polishing a Flow prompt · you want to edit an existing clip (use the Editing path,
not full expansion).
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## The dimensions — think through ALL of them
For every prompt, consciously decide each axis, then keep only what serves the idea:
| # | Dimension | Reference |
|---|---|---|
| 1 | **Subject** — who/what, 5–8 specific descriptors | [`subject-action-continuity.md`](references/subject-action-continuity.md) |
| 2 | **Action / physics** — one beat, strong verbs, secondary motion | same |
| 3 | **Setting** — location, era, weather, depth layers | same |
| 4 | **Camera** — shot size, angle, movement, lens | [`visual-language.md`](references/visual-language.md) |
| 5 | **Light & colour** — setup, time of day, palette, film stock | same |
| 6 | **Style & mood** — visual style, tone word, atmosphere | same |
| 7 | **Audio** — dialogue / SFX / ambient / music, or explicit silence | [`audio-and-