Short-Form Length by Use Case

Short-form length changes both where a platform places a video and what the viewer expects from it. The same footage cut to a different length becomes a different video.

Around 15 seconds is what platforms push hardest. It only works if it carries one scene, one message — a single product, a single effect.

Around 30 seconds is the minimum length for a hook–build–payoff structure: before/after, a quick how-to, anything with a process.

60 seconds or more should only be used for a complete story or explanation. The longer it runs, the more drop-off you get, so every ~10 seconds needs something that makes the next moment worth waiting for.

Don't pick a length first and force the content to fit — judge how many seconds the material actually needs. A 15-second clip stretched thin and a 60-second clip padded out both show.