Reels Ad
Ad formatsA full-screen vertical 9:16 video ad in the Reels feed, sound-on and built to blend with native short-form clips. It uses the same 1080×1920 canvas and safe-zone rules as Stories, but sits in an endlessly scrollable video feed, so the first second and the audio do the work. Most run 15–30 seconds even though the format allows longer.
Example
A 15-second Instagram Reels ad, MP4/H.264, 1080×1920, with a hook in the opening frame and captions burned in for sound-off viewers.