Product brief into a 15-second ad script — worked example

The prompt

Brief: a reusable water bottle that keeps drinks cold for 24 hours. Write a 15-second vertical ad script with a hook (0-3s), demo (3-10s), and CTA (10-15s).

Expected result

A timestamped 3-beat script: an attention-grabbing opening line, a short demonstration of the cold-retention claim, and a direct call to action.

Why it works

Breaking the 15 seconds into three timed beats up front stops the model from writing one continuous paragraph that's hard to storyboard or hand to an editor.