Clip Hook

Clip hook, opening hook, video hook, attention hook, retention hook, and thumb-stopper are all terms clippers use to describe the mechanism that determines whether a short-form clip gets watched or ignored. They overlap but aren't identical.

The attention hook is the immediate scroll-stopper: the frame, sound, or phrase that interrupts automatic scrolling behavior and demands cognitive engagement before the viewer consciously decides to watch. This happens in under 2 seconds.

The retention hook is the secondary mechanism — the element inside the first 10–15 seconds that creates unresolved tension, curiosity, or anticipation strong enough to hold a viewer through the clip. It answers the implicit question: 'why should I finish this?'

A thumb-stopper is the most visual version: a single frame or motion that physically interrupts the scroll reflex. Strong captions, an unexpected visual, a face mid-reaction, or a moment of obvious absurdity can all function as thumb-stoppers.

For clippers, the practical work is source selection and clip-start-point identification. A source video where the speaker opens mid-opinion, or a stream clip that begins mid-reaction, has a natural opening hook built in. One that opens with context-setting or slow buildup requires trimming to find the hook inside the material.

AutoClip's AI moment detection identifies hook-strength signals — emotional intensity shifts, strong declarative statements, humor markers, and reaction onset points — and ranks candidate clips accordingly, surfacing the highest-hook moments from each source video automatically.