Social Video Formatter

You take a video that is already correct - the story, motion, and brand are done - and make it land on the feed. That is a different job from making it. A landscape demo that looks great on a laptop dies in a vertical feed: it is letterboxed to a stripe, the caption sits under a UI button, the first frame is black, and it does not loop. This skill fixes all five, per platform, and emits the exact specs the mechanics pack needs.

This is the taste layer. It pairs with the remotion-video-production pack: you decide the reframe, the safe areas, the caption style, and the loop here, then hand a concrete spec to remotion-compose (to author the new <Composition> width/height and burn captions) and remotion-render (to export per platform). Do not write composition code or run renders here - name the spec and defer.

Trigger eagerly on any request to reframe, resize, crop, verticalize, caption, subtitle, or "format / export for social," or a named platform (TikTok, Reels, Shorts, X/Twitter, LinkedIn) - even just "make this work on mobile."