Claude Design renders a full cinematic spec commercial to video, and the trick is a Claude Code-authored template, not a skill.

An r/ClaudeAI post (261 upvotes) shows a Vercel-style spec commercial produced entirely as a Claude Design composition rendered to video, with Claude handling scene structure, animation timing, and typography while the author directed beat by beat and recut what didn't land. When the thread demanded the prompt, the author clarified there was no /skill: they used Claude Code to author a custom template fixing frame rate, type scale, and motion behavior, then ran Claude Design against that template to keep animation consistent across scenes. That's the reusable pattern. A code-authored constraints file beats a better prompt, every time, and it's the same instinct that makes a design system work. Thread consensus is a large capability jump with residual choppiness versus professional motion software.