E-commerce Lookbook — cinematic fashion b-roll + a pixel-perfect product-card overlay

A finished reel = vertical 9:16 + voiceover + music bed + a pixel-perfect product-card HTML overlay + 30–45s. Pass `aspect_ratio: "9:16"` to `generate_project` (it threads to every scene; keep the garment consistent across shots with `character_anchor:"always"` + a restated wardrobe — the model often returns 4:3, so the Ken-Burns step cover-crops to exactly 1080×1920, see the note below), animate in waves of ≤4–5 with `resolution:"auto"` (or use the Ken-Burns stills fallback when fal's video tier is flaky), stitch with `create_media model_override:"ffmpeg-concat"`, then lay `chatterbox-tts` narration over a ducked `music` bed with `create_media model_override:"ffmpeg-mux"` + `audio_fill:"loop"` (so audio covers the FULL reel — no silent tail), then composite a single `hyperframes-render` document — the product card — over the whole reel. A silent montage with the price melted into a blurry frame is a draft, not a deliverable — see the `short-form-video` skill's *definition of done* and the `hyperframes-overlays` skill for the overlay pattern.