The correct pixel dimensions for 9x16 video ads are 1080x1920, rendered at 30 fps or higher. That single spec covers TikTok, Instagram Reels, Facebook Reels, YouTube Shorts and most Meta ad placements, which means you can build one master file and reuse it across almost every vertical placement without a second export.
Why 1080x1920 is the standard for 9x16 video ads
1080x1920 pixels is the resolution that matches a 9:16 aspect ratio at a sharpness level that looks clean on nearly every modern phone screen. It is wide enough (1080 pixels) to avoid visible pixelation on larger phones, but not so large that render times or file sizes become unwieldy.
Every major short-form video platform defaults to this orientation because it fills the entire phone screen without black bars. A horizontal or square video dropped into a vertical feed gets boxed in with empty space above and below, which wastes screen real estate and makes an ad look like an afterthought next to native vertical content.
If you only build one version of an ad, build it at 1080x1920. It scales down cleanly to lower resolutions if a platform ever requires it, but you can't scale a lower-resolution file up without losing sharpness.
Pixel dimensions for 9x16 video ads by platform
The underlying aspect ratio is consistent, but it helps to see how the same 1080x1920 master lines up against platform-specific guidance.
| Platform | Recommended pixel dimensions | Aspect ratio | Notes |
|---|---|---|---|
| TikTok | 1080x1920 | 9:16 | Full-screen vertical is the native format; avoid letterboxing. |
| Instagram Reels | 1080x1920 | 9:16 | Same spec works for Reels ads and organic Reels. |
| Facebook Reels / Stories | 1080x1920 | 9:16 | Keep key content centered; UI elements overlay top and bottom. |
| YouTube Shorts | 1080x1920 | 9:16 | Minimum width is lower, but 1080 wide is the safer starting point. |
| Meta feed placements (fallback) | 1080x1350 or 1080x1080 | 4:5 or 1:1 | Used when a vertical ad also runs in square or feed placements. |
Minimum accepted resolutions are sometimes lower than 1080x1920, but minimums exist so older or lower-powered devices can still upload something. They are not a quality target. Treat 1080x1920 as your working standard and only drop below it if a specific placement explicitly caps resolution lower.
Aspect ratio vs pixel dimensions: what each one actually controls
Aspect ratio and pixel dimensions answer two different questions, and mixing them up is a common source of confusion when briefing an editor or an AI tool.
- Aspect ratio (9:16) describes the shape of the frame — how tall it is relative to how wide it is. Any pair of numbers in that ratio works: 9x16, 1080x1920, 540x960.
- Pixel dimensions (1080x1920) describe the actual resolution — how many pixels wide and tall the file is, which determines sharpness on screen.
- You can keep the same 9:16 shape at a lower resolution (720x1280) and save on file size, but text and logos will look softer, especially on larger phones.
- Going higher than 1080x1920 (such as 1440x2560) rarely adds visible benefit for a 30-second social ad and mostly just increases render and upload time.
If you're deciding between formats for a campaign rather than just confirming pixel counts, the deeper comparison of 4x5 vs 9x16 video ratio for paid social ads covers when a near-square crop actually outperforms full vertical.
Safe zones: designing inside 1080x1920 without losing key content
Hitting the right pixel dimensions is only half the job. Every vertical platform overlays its own interface elements on top of your video — usernames, captions, like and share buttons, progress bars — and those elements sit in roughly the same zones across apps.
A practical safe-zone rule to test as a starting point: keep your most important visual content (product, face, offer text) within the middle 80% of the frame, both horizontally and vertically. That means roughly:
- Top margin: leave the top 10-14% of the 1920px height relatively clear, since some platforms place status bars or profile info there.
- Bottom margin: leave the bottom 15-20% clear for captions, call-to-action buttons and comment bars that platforms overlay automatically.
- Side margins: keep critical text at least 5-8% in from each edge so nothing gets clipped on devices with slightly different crop behavior.
- Center-weight your hook: since you don't control exactly where every platform places its UI, centering your product or main message vertically reduces the risk of overlap.
Build your 1080x1920 canvas with these margins in mind from the first draft rather than fixing it after the fact. Moving a logo or price tag after the ad is otherwise finished almost always means re-rendering the whole video.
Frame rate, file format and compression: what else to lock in alongside pixel dimensions
Pixel dimensions get the most attention, but three other specs determine whether your ad actually looks good once it's compressed and served on a 5-inch screen.
Frame rate
30 fps is a solid default for most vertical ad content, including product shots, text animations and talking-head footage. If your footage includes fast motion or you're testing higher production value, 60 fps is worth trying — the full breakdown of when each makes sense is in the guide to frame rate for vertical video ads.
File format
MP4 with H.264 encoding is the safest, most widely accepted export format across ad platforms. It balances file size against visual quality better than most alternatives, and nearly every ad manager accepts it without conversion. If you want the full comparison against other containers and codecs, see the guide to file format for vertical video ads.
Audio
Pixel-perfect video with distorted or silent audio still underperforms. Since a meaningful share of viewers will watch with sound off at first and only turn it on if the hook catches them, design the ad to work on mute (captions, visual hooks) while also mixing clean audio for viewers who do have sound on. The recommended audio format for vertical video ads covers bitrate and codec choices in detail.
A quick pre-export checklist
Before you upload a finished vertical ad to any platform, run through this list:
- Canvas is 1080x1920 pixels (9:16 aspect ratio).
- Frame rate is 30 fps (or 60 fps if you've tested it performs better for your content).
- File is exported as MP4 with H.264 compression.
- Key text, logo and call-to-action sit inside the safe zones, not tight against the edges or under where platform UI typically overlays.
- Captions are burned in or added as text, since the ad needs to communicate its message with sound off.
- You have a 4:5 and 1:1 crop ready in case the campaign also runs in feed placements that aren't full vertical.
How FrameNotion handles pixel dimensions for you
Getting the pixel dimensions, frame rate and safe zones right by hand takes real attention to detail, especially if you're building several ad variations a month. FrameNotion renders every ad at 1080x1920, 30 fps, as an MP4 by default, so the core spec is already locked in before you even open the editor.
You paste a product or website link, FrameNotion AI reads the page and writes a custom 30-second script and visual structure from scratch — hook, problem, benefit, proof, offer, call to action — then renders the finished vertical ad. Every ad also comes bundled as 4:5, 1:1 and 16:9, so you're covered if a placement calls for something other than full vertical, without re-rendering from scratch. You can see finished examples on the examples page or read more about the process on the features page.
The first ad is free with a new account (just sign up and confirm your email, no card required), and a finished ad is typically ready in about 10-20 minutes. Paid plans start from €39/month if you need more than one ad a month — full details are on the pricing page.
Frequently asked questions
Is 1080x1920 the only acceptable pixel size for a 9:16 video ad?+
No. It's the recommended working standard because it balances sharpness and file size well, but any resolution in the same 9:16 ratio (like 720x1280) is technically valid. Lower resolutions just risk looking softer on larger screens, so 1080x1920 is worth using as your default unless a platform caps it lower.
Can I use the same 1080x1920 file across TikTok, Reels and Shorts without changes?+
Generally yes, since all three default to the same 9:16 aspect ratio and accept 1080x1920 at 30 fps. The main thing to adjust per platform is where you keep key content, since each app overlays captions, usernames and buttons slightly differently.
What happens if my video is the wrong aspect ratio when I upload it?+
Most platforms will either crop the video to fit the vertical frame, which can cut off important content, or add black bars (letterboxing) above and below it. Both outcomes make an ad look lower quality next to native vertical content, so it's worth resizing to 9:16 before upload rather than relying on automatic cropping.
Do I need a higher pixel count for ads that will also run as display or in-feed video?+
Not usually. 1080x1920 for vertical placements and a matching 1080x1350 or 1080x1080 crop for feed placements covers almost every common ad slot. Going higher than that rarely improves how the ad looks on a phone screen and mainly adds file size.
Should I worry about pixel dimensions if I'm starting from a poster or flyer instead of a video?+
The target output dimensions are the same — 1080x1920 for a full vertical motion piece — but the design considerations shift toward preserving the original artwork, title and badges rather than fitting new footage into safe zones. Tools built for that use case, like FrameNotion's motion poster option, handle the resizing and safe-zone placement automatically while keeping the original poster elements intact.