A 15-second UGC ad is best used for one sharp angle. Give the hook roughly the first two seconds, demonstrate the product in the middle, and keep the close brief. This runtime works for retargeting, a single objection, a new visual hook, or a variation on a proven concept. It is usually too short for a founder story, several features, and multiple customer types. If the viewer needs background before the product makes sense, choose a longer cut or split the explanation into a series.
A 60-second version earns its length by adding proof. It can show the situation before use, the steps of the demonstration, a comparison, a credible qualification, and a fuller call to action. The extra time should make the decision easier, not simply slow down the same sequence. Plan sections that can also stand alone as shorter edits. A clean modular structure lets a team produce a primary story, then derive hook tests, product-detail clips, and retargeting cuts from the same creative direction.