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.

Choices

The value-prop recipe asks these of the user; this capability renders whatever the config says.

• music — the bed under the claims, or silent (sets music_brief, consumed by create-music-elevenlabs, not this renderer). Asked of the user; the demo used calm ambient sleep music.
• background — what the claims sit on (sets palette.bg). Asked of the user; the demo used white with a navy headline. palette.ink comes from the brand kit.

Environment: run with a Python that has Playwright (override the frame-render interpreter with RENDER_PYTHON); ffmpeg is auto-discovered (FFMPEG env > PATH > common prefixes). The frame renderer render_hyperframe.py is bundled in scripts/ — no external atom to fetch.

Contract

• Deterministic + FREE (Playwright frame-step + FFmpeg); no paid calls, no AI-rendered text.
• Claims are noun phrases, <=4 words; never <3, never >5. Optional benefit sentence <=12 words.
• One product visual per beat; rotate which SKU is the hero. Never reuse a flat variety-pack image as every canvas.
• Sound-off legibility is the bar: the headline uses the config palette.ink color on palette.bg; the per-beat accent color (from value_props[].accent — a SKU-accent slug or a hex) is the accent rule, not the headline.
• Product widths auto-scale from each image's aspect ratio (target display height), so tall sachet cutouts and wide product packshots both frame correctly.
• Assets are packshots, not always transparent cutouts: set palette.bg to the product image's background color for seamless compositing (free — avoids a paid background-removal step).
• Uniform pacing (hook ~3.0s, props 2.0-2.5s each, endcard ~2.0s); total lands in the 10-20s window (~17s). No acceleration curve.
• No human face is the focus. End card uses the brand wordmark image when a hi-res one (aspect >= ~1.2, i.e. a real >=1200x600 wordmark) is provided via config.logo; otherwise it falls back to a typographic brand_name wordmark (many brands ship only a favicon).
• Music is added separately by create-music-elevenlabs (quiet instrumental bed at -14 dB), or ship silent.