What length works for Stories, Reels, and ads?

The menu story fits in one frame, the dish reel in a short cut, and the ad in the part that already worked organically. Stretching it to tell a story fails if the thing for sale is not visible within a few seconds. Watch the frame on mute: if the product is not clear at once, the cut is too long. A one-minute reel hides the dish behind an introduction, and nobody reaches the name. Each format has a working length: one frame, a short cut, and the ad trimmed from that cut.