The recommended resolution for Facebook video ads is 1080×1920 pixels (9:16, vertical) for full-screen placements like Stories, Reels and in-stream, and 1080×1080 (1:1) or 1080×1350 (4:5) for classic Feed placements. As a general rule of thumb, export at 1080 pixels on the longer edge no matter which aspect ratio you choose — that gives Facebook's compression enough detail to work with without forcing you to upload an unnecessarily heavy file.
The recommended resolution for Facebook video ads, by the numbers
Facebook runs video ads across several surfaces inside the Meta ecosystem — the main Feed, Stories, Reels, in-stream (ads inside other videos), and Marketplace. Each surface has a preferred aspect ratio, but the underlying resolution guidance is consistent: aim for 1080 pixels on the short side at minimum, and don't go below 720p unless your source footage genuinely has nothing higher.
- Vertical 9:16: 1080×1920 — Stories, Reels, in-stream when the surrounding content is vertical
- Square 1:1: 1080×1080 — Feed, Marketplace
- Portrait 4:5: 1080×1350 — Feed (often performs better than square because it uses more screen height)
- Horizontal 16:9: 1920×1080 — in-stream pre-roll or mid-roll within landscape video content
If you're producing a single file and want it to look sharp across every placement Facebook might serve it in, 1080×1920 is the safest starting point: it's high enough resolution to downscale cleanly to square or 4:5, and it's the native shape for the placements that tend to get the most inventory on mobile.
Why resolution still matters when Facebook compresses everything anyway
Every video uploaded to Facebook gets re-encoded and compressed before it's served to viewers, so your original file is never shown pixel-for-pixel. That doesn't make resolution irrelevant — it makes it more important. Compression removes detail; it doesn't add it. If you upload a soft, low-resolution file, compression will make it softer. If you upload a sharp 1080p file, compression has more information to work with and the result holds up better, especially on larger phone screens and tablets.
Resolution also interacts with legibility. Facebook ads are designed to work on mute, which means on-screen captions and callouts carry a lot of the message. Text rendered on a low-resolution base turns fuzzy fast, and that's the first thing a scrolling thumb will notice.
Resolution and aspect ratio by Facebook placement
| Placement | Aspect ratio | Recommended resolution | Notes |
|---|---|---|---|
| Feed | 1:1 or 4:5 | 1080×1080 or 1080×1350 | 4:5 uses more vertical screen space than 1:1 on mobile |
| Stories | 9:16 | 1080×1920 | Full-screen, edge-to-edge; keep key text away from top and bottom safe zones |
| Reels | 9:16 | 1080×1920 | Same safe-zone rules as Stories; UI elements overlay the bottom third |
| In-stream | 16:9 or 9:16 | 1920×1080 or 1080×1920 | Depends on whether the host video is landscape or vertical |
| Marketplace | 1:1 or 4:5 | 1080×1080 or 1080×1350 | Treat like Feed; thumbnail quality matters since it's browsed like a catalog |
If a single budget or campaign is running across multiple placements, Facebook's ad system can serve different aspect ratio versions automatically — but only if you upload them. Relying on one shape and letting the platform auto-crop the rest is the fastest way to end up with an off-center subject or a cropped-off logo.
How to choose an aspect ratio when you only have one video
Producing four versions of every ad isn't realistic for most small teams. If you have to pick one master format, use this decision guide:
- If most of your budget will run on Stories, Reels or in-stream mobile placements, build vertical 9:16 at 1080×1920.
- Keep the main subject and any text inside the center 80% of the frame, so a crop to 1:1 or 4:5 doesn't cut off a face, logo, or call-to-action text.
- Avoid putting critical information in the far top or bottom of a vertical frame — that's where Facebook's UI (profile name, caption, CTA button) sits.
- If your campaign leans heavily on classic Feed placement, 4:5 is usually a better single-format choice than square, since it fills more of the screen without being a full 9:16 crop.
This same center-safe approach is how FrameNotion builds every ad: the vertical 1080×1920 master is designed with a clear safe zone, so the 4:5, 1:1 and 16:9 versions it also generates don't need to be re-shot or manually recropped.
Common resolution mistakes that hurt ad performance
- Upscaling low-resolution footage. Stretching a 480p clip to fill a 1080×1920 frame doesn't add detail — it just makes the softness more visible on a bigger screen.
- Exporting below 1080 on the long edge. It may pass upload checks, but it gives compression less to work with and the final ad looks noticeably softer than competitors' ads in the same feed.
- Mismatched aspect ratio cropping. Shooting square and then stretching to 9:16 (or the reverse) distorts proportions — people and products look subtly wrong even if viewers can't say exactly why.
- Ignoring platform safe zones. Text or logos placed too close to the edges get obscured by Facebook's own UI overlays, especially in Stories and Reels.
- Inconsistent frame rate. Resolution and frame rate are different settings, but mismatched frame rates can cause stutter on export. If you're also deciding between 24, 30 or 60 fps, see our guide on recommended frame rate for Facebook feed ads.
A pre-upload checklist for Facebook video resolution
- Confirm the export resolution is at least 1080 pixels on the shorter edge (1080×1920, 1080×1080 or 1080×1350).
- Check the aspect ratio matches the placement you expect to run most: 9:16 for Stories/Reels/in-stream, 4:5 or 1:1 for Feed.
- Preview on an actual phone screen, not just a desktop editor, since that's where most impressions will be served.
- Keep text and logos inside the center safe area so cropping to another ratio doesn't cut anything important.
- Turn the sound off during review — if the ad still makes sense through captions and visuals alone, resolution issues with text legibility will show up here too.
- Export as MP4, the format Facebook expects, and avoid re-compressing the file more than once before upload.
How this compares with other placements and platforms
If you're running the same campaign across several platforms, resolution expectations are similar but not identical. Our guides on recommended resolution for TikTok video ads and recommended resolution for YouTube Shorts ads cover the vertical-first specs for those platforms, and if your campaign leans heavily on Facebook's classic Feed rather than Stories or Reels, the dedicated breakdown in recommended resolution for Facebook Feed ads goes deeper on that one placement. For video ads that run inside other video content rather than between posts, see video ad specs for Facebook in-stream ads.
How FrameNotion handles resolution for you
FrameNotion is built around the vertical placements that get the most inventory on Facebook and Instagram today. Paste in a product link, and FrameNotion AI writes and renders a 30-second ad at 1080×1920, 30 fps — the resolution and frame rate that line up with Stories, Reels and in-stream placements out of the box. Every finished ad also comes automatically in 4:5, 1:1 and 16:9, so you're not re-exporting or recropping anything to cover classic Feed or horizontal in-stream slots.
Because the ad is designed from scratch rather than cropped from a single master clip, the subject, captions and call-to-action stay readable in every ratio. Ads are also built to hold up on mute, with word-by-word captions and an optional AI voiceover, which matters more once resolution and legibility are already handled. You can see the finished look across formats in the example ads, or check pricing — the first ad is free, no card required.
Frequently asked questions
Does Facebook accept 4K video ads?+
Facebook will generally accept higher-resolution uploads, but there's no benefit to going above 1080p on the long edge for ad placements, since the platform re-encodes and compresses every video before serving it. A clean 1080×1920 or 1920×1080 file is a safer, lighter starting point to test.
What happens if my video resolution is too low?+
Low-resolution source footage usually still uploads successfully, but it looks noticeably softer after Facebook's compression, especially on larger phone screens and tablets. Text and captions suffer the most, since fine detail is the first thing compression removes.
Can I use the same video file for both Facebook and Instagram ads?+
Yes, in most cases. Facebook and Instagram share the Meta Ads Manager and use the same general placement shapes — vertical 9:16 for Stories and Reels, square or 4:5 for Feed — so a file built to these specs typically works for both without changes.
Is 1080×1920 required, or is it just a recommendation?+
It's a recommendation, not a hard requirement. Facebook accepts a range of resolutions, but 1080×1920 for vertical placements (and 1080×1080 or 1080×1350 for Feed) is the sweet spot that balances sharp playback with reasonable file size.
Does a higher resolution video cost more to run as an ad?+
Resolution itself doesn't affect ad spend. What it can affect is file size and upload time, and in some cases how the ad looks next to competitors in the same feed — a sharper video can hold attention longer, which is worth testing even though it won't change your cost settings directly.