Vertical short-form video factory (1080×1920, ≤60s)

Build a repeatable short-form production workflow around a readable JSON timeline. This skill guides hook selection, storyboard beats, scene changes, caption placement, cover selection, and final inspection for a 1080×1920 video of up to 60 seconds. The self-contained example uses Remotion and Three.js to animate a subject through three captioned scenes. Its Python runner checks duration, frame bounds, scene continuity, colors, and beat ordering before rendering an MP4 and PNG cover. Adapt the scaffold to Shorts, Reels, or TikTok; preview each destination's interface before publishing. Includes an offline test, example configuration, and no channel-specific defaults or performance promises.