Individual skill

render-vignette

Assemble a short-form 'vignette' ad from clean product cutouts composited over a kinetic background video — birefnet cutout, then a cold-open text card + product carousel + annotated specimen-sheet end card, plus loudnorm + separate-pass music mux. FREE assembly (PIL + rsvg + FFmpeg); the recipe supplies the config and gates the paid BG/cutout/music calls to their own capabilities. Use for the vignette format.

skills/video/render-vignette/SKILL.md

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Observed behavior: Network or broad shell
Last checked: Nov 11, 2026

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Repository stars (not skill ratings): 1,314
Repository last updated: Nov 6, 2026
License: MIT

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SKILL.mdcore · 5,292 bytes
SKILL.mdcore · 5,292 bytes
scripts/composite_variants.pyruns · 8,604 bytes
scripts/media_proxy.pyruns · 58,192 bytes
scripts/music_and_mux.pyruns · 7,302 bytes
scripts/render_overlays.pyruns · 7,288 bytes
scripts/strip_product_backgrounds.pyruns · 5,974 bytes
skill.meta.jsonasset · 225 bytes
tests/smoke-test.mddoc · 706 bytes

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# render-vignette

Assemble a short-form 'vignette' ad from clean product cutouts composited over a kinetic background video. Motion lives in the BG video; the product rides on top as a static cutout layer. Music-led, zero VO, sub-12s, loopable — it reads muted because the product label + on-screen copy carry the message. Defaults to the V-CARD structure: a cold-open text card → a product carousel under one shared BG → an annotated specimen-sheet end card.

## Run
1. `strip_product_backgrounds.py` — birefnet cutout of each PDP shot to clean hard-edge alpha (no halo/shadow).
2. `render_overlays.py` — PIL + `rsvg-convert` render the cold-open card (`cold_open_text` in `cold_open_font`, dead-center) + the annotated specimen-sheet end card (brand SVG logo + `end_card.lines` annotations) as transparent 1080x1920 PNGs. Text colour follows `end_card.logo_variant`. FREE.
3. `composite_variants.py` — one FFmpeg `filter_complex` per BG variant: BG (palette-aware dim) → cold-open overlay → cutouts (width-anchored, vertically centered `y=(H-h)/2`) → end card. h264 crf20 yuv420p +faststart 30fps. FREE.
4. `music_and_mux.py` — instrumental music bed from `config.music.prompt` → `acompressor + loudnorm I=-18:TP=-2:LRA=9` → muxed into every variant in a SEPARATE pass with explicit `-map 0:v:0 -map 1:a:0`. The mux is FREE; the music generation is a paid call that in prod routes through create-music-elevenlabs.

Every script reads `config.json` (`--config <path>`, `$VIGNETTE_CONFIG`, `<project>/config.json` or `scripts/config.json`) and exits naming any missing required field — there are no built-in demo values.

## Choices