How Long Should a Reel Be
Most reels that teach one idea land between 15 and 45 seconds. Match the length to the number of beats, not to a trend.

A reel should be as long as the beats, and no longer. Instagram's own range runs from a few seconds to three minutes. In practice, a single idea fits in 15 to 45 seconds. Trend jokes are often under 15. A walkthrough can go past a minute if every ten seconds changes the picture. Length is not a strategy. Completion is.
Count beats, then multiply
Four beats at about six seconds is a 24-second reel. If you cannot name the beats, you cannot pick a length. Writing the length first is how you pad.
Cut the greeting
"Hey guys" is two seconds you will not get back, and it teaches the viewer that the point is later. Later is where they leave. Start on the title.
Split instead of stretching
If the sentence needs 90 seconds, publish three reels with three titles. A long reel that sags in the middle loses the people who would have watched three short ones.
A worked example
A shop policy. Beat one: "We do not do rush." Beat two: the normal queue. Beat three: how to book. Eighteen seconds. The exceptions live in a second reel titled "What counts as rush."
Before you post
- You can name every beat.
- Nothing in the first three seconds is a greeting.
- A second idea became a second reel.
Where Scro fits
Scro plans the beats before it renders, so you see the length in the storyboard. Approve the stills, trim silence in the editor, and export 9:16 at the length the beats earned.
Pick a length and storyboard it. Finished samples are on the examples page.
Related: The First 3 Seconds of a Reel.
