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render-value-prop

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Render a designed 'value prop' video from a config — 3-5 noun-phrase benefit claims (<=4 words each) revealed sequentially over per-SKU product visuals, one crisp editorial frame per claim (hook sticker -> N claim beats -> brand end card). Deterministic PIL/HTML beat renderer frame-stepped via Playwright and encoded with FFmpeg, sound-off legible, hard cuts, uniform pacing. FREE (no paid calls); music is added separately (create-music-elevenlabs). Use for the value-prop format.

skills/video/render-value-prop/SKILL.md

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Nov 6, 2026
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# render-value-prop

Render a designed 'value prop' video from a config: a hook sticker, then one beat per short noun-phrase benefit claim (<=4 words each — "Drug-Free", "Zero Sugar", "NSF Certified"), each pairing the claim headline with a per-SKU product visual (the hero SKU rotates beat to beat so the eye anchor shifts), then a brand-wordmark end card. Text + product carry the spot — no narration, no talking head — and it is built to be legible sound-off. Every beat is a pure function of beat-local time `t` (deterministic PIL start frames + Playwright hyperframes + FFmpeg); no CSS keyframes, no setTimeout. FREE (no paid calls); music is a separate capability (create-music-elevenlabs), or ship silent for free.

## Run
`render_master.py --config config.json --project <dir>` -> `<dir>/finals/master-clean.mp4` (silent),
1080x1920, deterministic, no paid calls. The renderer is **fully config-driven** — palette, copy, SKUs,
pacing, hook, logo and end card all come from `config.json` (schema = `ad_sample.recipe.config`;
see `config.example.json`). Nothing is hardcoded to one brand. `build_storyboard_preview.py` is an
optional free preview gallery for the gate; `build_text_overlays.py` is optional (transparent
text-zone PNGs for compositing claims over a motion clip). Both preview scripts take their ink,
background, brand name and logo from `shot-list.yml` `project:` or the project's `config.json`
(neutral fallbacks otherwise). `shared/beat-templates/` are reference layouts with placeholder copy;
the renderer does not read them.
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