What is hook?
Hook: A hook is the opening moment of a short-form video—usually the first one to three seconds—designed to stop viewers from scrolling and commit them to watching. It can be a spoken line, on-screen text, a visual, or a bold claim, and it largely determines whether the rest of the video gets seen.
Why your hook decides everything
The first seconds are where most viewers are lost. Short-form feeds judge a video largely on how it performs with its first wave of viewers, and early swipe-aways drag down completion rate and average view duration—the retention signals platforms are generally understood to weigh heavily, even though none of them publish exact weights. A great video with a weak hook usually dies unseen, because the feed never gets a reason to push it further.
How to write stronger hooks
- Cut the throat-clearing. "Hey guys, welcome back" is dead air—open on the payoff, the tension, or the boldest claim in the video.
- Write the hook before you film. If you can't state it in one line, the video isn't ready.
- Stack formats: pair the spoken hook with a text overlay so it works with sound off.
- Make it specific. "How I edit" is weak; "the 3-second edit that fixed my retention" gives viewers a reason to stay.
- Test variations. Tools like ReelTok's AI hook generator can draft alternate openers to compare before you post.
Common misconception: a hook has to be loud or clickbaity. Overpromising is actually a retention trap—viewers who feel baited swipe away the moment the payoff falls short, and that drop-off hurts more than a modest hook ever would. The best hooks are honest promises the video actually keeps.
See these signals scored on your own video
ReelTok's AI analyzes your video on-device before you post — one 0–100 virality score built from the signals in this glossary.
Related terms
Browse the full creator glossary, read the growth guides, or try the free virality score checker.