Hook rate

The metric comes from paid social advertising, where ad platforms report three second views as a share of impressions and media buyers used it to judge creative. Organic creators adopted the same idea once retention graphs became available, because the first seconds are where the largest share of viewers leave and a single number for that moment is easier to compare than a whole curve.

It matters because the opening is the only part of a clip every viewer sees. A clip with a weak hook never gets the chance to show its best moment, and ranking systems judge the post largely on what the first audience did. Separating the hook from the body also tells a clipper which problem to fix: an opening that fails needs a different first line, while a body that fails needs a different cut.

The nuance is that platforms do not report it the same way. Meta ad tools expose three second plays directly, TikTok shows a retention curve you read the figure from, and YouTube Shorts reports viewed versus swiped away rather than a time based figure. Numbers are therefore not comparable across platforms, and the useful comparison is between your own clips on the same one.

Practically, hook rate improves by starting the cut inside the moment, putting the payoff in the first spoken line and in an opening caption for muted viewers, and testing several openings for the same clip rather than arguing over which reads best. Tools that propose multiple start points from one recording make that test cheap to run.