Retention
The proportion of a video people are still watching at a given point.
Usually read as a graph. The shape matters more than the average: a cliff in the first fifteen seconds is a hook problem, a slow steady decline is a pacing problem, and a mid-video cliff usually marks the exact moment you started saying something the audience did not come for.
Retention is the closest thing to an honest signal a creator gets, because it measures behaviour rather than opinion.
Formats where this matters most
- Video Essay / Deep DiveA long-form researched piece, twenty minutes and up, that defends an explicit thesis.
- Vlog / Day in the LifeThe creator's ongoing lived experience, filmed chronologically as it actually happens.