video-hook-lines-ad-creativelisted

# Video Hook Lines Shared quality bar: `../references/output-standard.md`. All numbers cited here live in `../references/thresholds.md`. The hook is three things happening at once and they are judged together. A strong spoken line over a shot that shows nothing is a weak hook. ## Use this skill when A video ad needs its opening built or rebuilt: what is said, what is shown as text, and what is on screen inside `limits.video_hook_seconds`. Also use it when watch time collapses in the first seconds while the rest of the video holds. The angle and the audience temperature are given, not chosen here. Not for the primary text that sits above the video in the feed, which is paid-social-primary-text-ad-creative. Not for Google search assets, which is search-headline-set-ad-creative. Not for producing one angle across all three funnel stages at once, which is funnel-stage-variants-ad-creative. ## Required input - The angle as one sentence, and the audience temperature: cold, warm or retargeting. - Placement and aspect ratio, against `coverage.ratio_set`. - Sound assumption: does this play with sound on or off by default. - What footage or assets actually exist. Shots that must be produced are flagged, not assumed. - The claims available with their sources, and any brand or legal constraint. - Existing hook performance if there is any: retention curve, thumbstop rate. ## Analysis workflow 1. Confirm the angle and temperature in one sentence each. A cold hook and a retarg