YouTube Shorts Size in 2026: 1080×1920, Safe Zones, and Why Your Clip Gets Cropped

By Kyle White, founder of ClipSpeedAI · September 11, 2026 · 6 min read

YouTube Shorts is 1080 × 1920 pixels at a 9:16 aspect ratio. That is the whole answer to the question most people are asking, and every guide gets it right. What almost none of them tell you is the part that actually ruins clips: roughly the top and bottom 15% of that frame is covered by YouTube's own interface. Your captions are still in the file. The viewer just cannot see them.

The spec, in one table

Setting	Use this	Also accepted
Resolution	1080 × 1920	720 × 1280 minimum, up to 2160 × 3840
Aspect ratio	9:16 vertical	Nothing else fills the screen
Length	Under 60s performs best	Up to 3 minutes since Oct 2024
Container	MP4	MOV, WebM
Video codec	H.264	H.265, VP9
Audio codec	AAC	—
Frame rate	Match your source (24/30/60)	Do not convert

Exporting above 1080p is wasted work

YouTube accepts Shorts up to 4K, and a lot of advice tells you to upload the highest resolution you have. For Shorts specifically that advice costs you upload time and returns nothing: Shorts are served to viewers at a maximum of 1080p regardless of what you upload. A 2160 × 3840 export is four times the file size for a stream nobody will ever receive.

The number that does matter is the floor. Below 720 × 1280 the encoder has too little to work with and compression artifacts show up in exactly the places that hurt — faces, fast motion, and text edges. If your source footage is 720p, upscaling it to 1080 × 1920 before upload does not add detail; it just makes the softness larger. Shoot or capture vertical at 1080 × 1920 if you can.

The safe zone is the part that breaks clips

This is where most exported clips go wrong, and it is invisible until you watch on a phone.

YouTube overlays its own interface on top of your video: the channel name, title and description sit across the bottom, the action buttons (like, dislike, comment, share, remix) run up the right side, and the top carries search and settings. None of that is in your file. All of it covers your file.

At 1080 × 1920, plan for:

Top ~288px (15%) — obscured by search and menu controls.
Bottom ~288px (15%) — obscured by title, channel handle and description. On Shorts with longer titles this can reach further up.
Right ~140px — the vertical action button stack.

That leaves a usable centre band of roughly 1920 × 1344 pixels, shifted slightly left. Anything you need a viewer to read — burned-in captions, a hook line, a logo, a price — belongs inside it. Captions sitting 100px from the bottom look perfect in your editor's preview and are completely hidden in the app.

This is also why the same clip can work on TikTok and fail on Shorts. The platforms put their UI in different places, and a caption tuned to one will collide with the other.

Why your clip looks cropped or has black bars

Three causes, in the order you should check them.

1. The source was 16:9 and got letterboxed. If you exported a horizontal video into a vertical canvas, you get black bars top and bottom and a small strip of actual video in the middle. The fix is not padding — it is reframing: crop into the 9:16 area that contains the subject, and track that subject if it moves.

2. The aspect ratio is close to 9:16 but not exact. 1080 × 1900 is not 9:16. The player will pillarbox or crop to make it fit, and you lose control over which part survives. Check the actual pixel dimensions of your export rather than trusting a preset name.

3. It was under 60 seconds but not detected as a Short. Shorts detection keys on the vertical aspect ratio and the length. A square 1:1 upload is treated as a regular video and appears in the normal player, where it looks fine — and gets none of the Shorts distribution.

Pre-upload checklist

Export is exactly 1080 × 1920, not 1080 × 1900 or 1080 × 1440.
Every caption and logo sits more than 288px from the top and bottom edges.
Nothing important sits in the right-hand 140px.
MP4 / H.264 / AAC.
Frame rate matches the source — no 60fps to 30fps conversion on the way out.
Watched once on an actual phone, in the actual app, before you consider it done.

That last one catches more problems than the other five combined.

Doing this at volume

The specs above are easy to hit for one clip and tedious to hit for thirty. Reframing a horizontal video into 9:16 while keeping the speaker centred, then placing captions inside the safe band, is the actual work — and it is the same work every time.

ClipSpeedAI does that pass automatically: it finds the moments worth cutting in a long video, reframes each one to 1080 × 1920 with the subject tracked, and burns captions inside the safe zone rather than under the UI. If you would rather do it by hand, the checklist above is the whole job — it just takes about twenty minutes per clip.

Frequently asked questions

What size should a YouTube Short be?

1080 x 1920 pixels, a 9:16 vertical aspect ratio. YouTube accepts from 720 x 1280 up to 4K (2160 x 3840), but every Short is delivered to viewers at a maximum of 1080p, so exporting above 1080 x 1920 costs upload time without improving what anyone sees.

What is the YouTube Shorts aspect ratio?

9:16. Anything squarer than that gets pillarboxed with black bars or cropped by the player, which is the most common reason a clip that looked correct in an editor looks wrong on a phone.

How long can a YouTube Short be?

Up to 3 minutes as of October 2024, raised from the original 60 seconds. There is no minimum length.

Why do my captions get cut off on YouTube Shorts?

The top and bottom roughly 15% of the frame sit underneath YouTube's own interface: the title, channel name, description and action buttons. At 1920 pixels tall that is about 288 pixels at each end. Text placed there is still in your file, it is just covered on the viewer's screen.

What video format does YouTube Shorts use?

MP4 with H.264 video and AAC audio is the safest combination. YouTube re-encodes everything on upload, so the goal of your export is to give the encoder a clean source, not to match a delivery spec.