What is Hook?

The hook does one measurable job, and the measure is whether a viewer is still watching a few seconds later. The working formats are well known: the outcome shown first, a direct question, a visible problem, a claim that contradicts an expectation, or the product in use in the opening frame. What makes any of them work is specificity to the audience being bought, which is why the same body edit needs different openings for cold traffic and for people who already know the brand.

Because a hook is short and modular, it is the cheapest element of a campaign to test. Three to five openings against one body gives a clean read on which idea earns attention without reproducing the whole video, and the winner usually informs the next round of scripts. Two cautions apply. A hook promising what the rest of the video does not deliver buys attention and spends trust, and hooks that stop working after weeks of delivery are normal rather than evidence of a bad idea.