# Facebook video ad specs and sizes

> Facebook Feed video ads recommend 4:5 at 1440 x 1800, up to 4 GB. Stories use 9:16 at 1440 x 2560. Full spec table, text limits and where Meta's pages differ.
- **Author**: Marxx
- **Published**: 2026-11-07
- **Category**: Ad specs
- **URL**: https://marxx.ai/library-guides/facebook-video-ad-specs

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Facebook Feed video ads recommend 4:5 at 1440 x 1800, as MP4, MOV or GIF up to 4 GB and 241 minutes. Facebook Stories use 9:16 at 1440 x 2560 and run 1 second to 3 minutes (checked 3 Nov 2026).

## The specs

| Item | Facebook Feed | Facebook Stories |
|---|---|---|
| Aspect ratio | 4:5 | 9:16 (1% tolerance) |
| Recommended size | 1440 x 1800 | 1440 x 2560 |
| Minimum size | 120 px wide and tall | 250 px wide |
| File types | MP4, MOV, GIF | MP4, MOV, GIF |
| Max file size | 4 GB | 4 GB |
| Length | 1 second to 241 minutes | 1 second to 3 minutes |
| Primary text | 50 to 150 characters | 125 characters |
| Headline | Not on the page | 40 characters |

Source: Meta's ad guide pages for [Facebook video ads](https://en-gb.facebook.com/business/ads-guide/update/video), which Meta sets out by objective. These are the Awareness versions.

## Encoding and sound

Meta asks for H.264 compression, square pixels, a fixed frame rate, progressive scan and stereo AAC audio at 128 kbps or more. It gives no frame rate number and no video bitrate. Captions and sound are optional but recommended. See [export settings for Facebook and Instagram video ads](/guides/export-settings-for-facebook-video-ads).

## Stories behave differently

Facebook Stories videos of 15 seconds or less play in full. Longer videos are split into cards, with one, two or three shown before "Play full". Meta says to keep roughly 14% of the top, 35% of the bottom and 6% on each side clear of text and logos. See [Instagram Story ad size](/guides/instagram-story-ad-size), which uses the same margins.

## Where Meta's pages differ

- **Feed primary text.** The English page says 50 to 150 characters. The Hindi version says 50.
- **Stories length.** The guide says 1 second to 3 minutes. A search summary of Meta's older video requirements chart said 1 to 120 seconds. We could not confirm it, so follow the guide.
- **Engagement versions.** Meta has a separate Engagement version of the Facebook Feed page. We did not read it.
- **Facebook Reels.** Meta lists Ads on Facebook Reels as a placement. We could not read a separate spec page for it, so check Ads Manager.

## Set it up in Marxx

We make Marxx. [Marxx's AI video editor](/features/ai-video-editor) shows safe-zone overlays for Reels and Stories and exports MP4 (H.264) with presets for Meta ads. Its projects are 9:16, 1:1 or 16:9, so it does not make 4:5 Feed videos.

## A worked example

Say you need a custom size at a different width. Multiply the width by the ratio's other side.

1. For 4:5 at 1,440 wide: 1,440 x 5 / 4 = 1,800 tall.
2. For 9:16 at 1,440 wide: 1,440 x 16 / 9 = 2,560 tall.

Both match Meta's recommended sizes. For which ratio to choose, read [9:16 vs 4:5 video ads](/compare/9-16-vs-4-5-video-ads). For tools, see [the best video editors for Facebook ads](/best/best-video-editors-for-facebook-ads).

## FAQ

### What is the best size for a Facebook video ad?

For Facebook Feed, Meta's guide recommends 4:5 at 1440 x 1800. For Stories it recommends 9:16 at 1440 x 2560.

### How long can a Facebook video ad be?

Feed ads run 1 second to 241 minutes. Facebook Stories run 1 second to 3 minutes.

### What file types does Facebook accept for video ads?

MP4, MOV and GIF on Feed and Stories.

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