Ad specs / Instagram
Instagram Reels video ad size
An Instagram Reels video ad is 9:16 at 1440 × 2560 pixels and runs from 0 seconds to 15 minutes. The minimum width is tiered: 250 pixels under 30 seconds, 500 pixels at 30 seconds or longer.
| File type | MP4 or MOV |
|---|---|
| Recommended resolution | 1440 × 2560 pixels |
| Aspect ratio | 9:16 |
| Video duration | 0 seconds to 15 minutes |
| Minimum width | 250 pixels for ads under 30 seconds; 500 pixels at 30 seconds or longer |
| Maximum file size | 4 GB |
| Primary text | 44 characters |
| Encoding | H.264 compression, square pixels, fixed frame rate, progressive scan, stereo AAC audio at 128kbps+ |
What the other guides get wrong
The tiered minimum width is the only one of its kind in Meta's guide and appears in none of the spec sheets we checked. The resolution is the same 1440 × 2560 as the image placement, against a universal 1080 × 1920 on page 1.
Source: Meta Ads Guide — video ads on Instagram Reels. Every figure on this page was read there on 2026-09-19. Platforms revise specs without notice; check the source before you build a template on it.
Related reading
Terrads composes each placement for its own frame at this size, instead of cropping one master down to it.