mimicVideo file
| Spec | Value |
|---|---|
| Aspect ratio | 9:16[1]same on Instagram Stories and Facebook Stories |
| Recommended resolution | 1440x2560[1]same on all three placements |
| Minimum width | 250 px; 500 px for Instagram Reels ads 30 seconds or longer[1] |
| File types | Reels: MP4, MOV; Stories: MP4, MOV or GIF[2] |
| Max file size | 4 GB[1] |
| Video settings | H.264, square pixels, fixed frame rate, progressive scan, stereo AAC at 128 kbps+[1] |
| Sound | Optional but recommended; Reels play sound-on by default[5] |
Length
| Spec | Value |
|---|---|
| Instagram Reels ads | Up to 15 minutes[1]listed as 0 seconds to 15 minutes |
| Instagram Stories ads | 1–120 seconds[4]Meta's requirements chart; the Ads Guide placement page lists up to 60 minutes |
| Facebook Stories ads | 1–120 seconds[4]Meta's requirements chart; the Ads Guide placement page lists up to 3 minutes |
| Facebook Reels ads | Not publishedMeta's Facebook Reels spec page didn't load for us |
Text and captions
Safe zone
| Spec | Value |
|---|---|
| Keep free of text and logos | Top 14%, bottom 35%, 6% on each side[1]same figures on the Instagram Stories and Facebook Stories pages |
What Meta Ads (Reels and Stories) doesn't publish
Creators ask about these, but there's no official number. We leave them out rather than guess.
- Facebook Reels ad specs (Meta's placement page for Facebook Reels didn't load for us)
- A specific frame rate (Meta asks only for a fixed one)
- A maximum video bitrate
Exporting for Meta Ads (Reels and Stories)
Export 9:16, 1080x1920 or 1440x2560
Meta recommends 1440x2560; 1080x1920 is the same ratio and clears the 250–500 px minimum width.
Map the safe zone in pixels
On a 1080x1920 frame, 14% top is about 270 px, 35% bottom about 670 px, and 6% sides about 65 px. Keep captions and logos inside.
Write tight primary text
Meta suggests 44 characters for Instagram Reels ads and 125 for Stories.
Mix with sound
Reels play sound-on by default, and Meta recommends sound on all three placements.
Fix the frame rate
Export H.264 at a constant frame rate with stereo AAC at 128 kbps or more, as Meta lists.
Mimic exports vertical 9:16 video with captions and titles kept inside the apps' safe zones and off the speaker's face.
Sources
- [1] Meta Ads Guide, Awareness Video Ad Specs on Instagram Reels. Checked October 2026.
- [2] Meta Ads Guide, Awareness Video Ad Specs on Instagram Stories. Checked October 2026.
- [3] Meta Ads Guide, Awareness Video Ad Specs on Facebook Stories. Checked October 2026.
- [4] Meta for Business, Facebook Video Requirements Chart. Checked October 2026.
- [5] Meta for Business, Instagram & Facebook Reels: Create Short Video Ads. Checked October 2026.
Platforms change limits without notice. Check the linked page before a big campaign.
Questions
What size are Meta Reels and Stories ads?
9:16, with 1440x2560 recommended for Instagram Reels, Instagram Stories and Facebook Stories.
What is the safe zone for Reels and Stories ads?
Keep roughly the top 14%, bottom 35% and 6% on each side free of text, logos and key elements.
How long can an Instagram Reels ad be?
Up to 15 minutes, per Meta's Ads Guide.
How long can a Stories ad be?
Meta's video requirements chart lists 1–120 seconds for Instagram and Facebook Stories. Its Ads Guide pages list longer maximums (60 minutes and 3 minutes), so 120 seconds is the safe target.
What file size can a Meta video ad be?
Up to 4 GB.
Made for Meta Ads (Reels and Stories), edited by Mimic.
Raw clip in. Captions, cuts, hook and product shots out.
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