Vertical (9:16) X videos

Vertical video technical sheet

Common sizes

1080×1920, 720×1280, 480×852, 320×568

Label

By the width (the shorter side): 720×1280 → “720p”

Aspect ratio

9:16 stored in the file; no black bars added by us

Rotation

Frames are stored upright; no rotation flag to fix

Plays as

Full-screen portrait on phones; pillarboxed on desktops

Get Vertical video from an X post

1. Extract the post. Paste the link and press Extract; the preview shows the vertical frame.
2. Pick the label you need. Remember: the label is the width for vertical clips.
3. Share as video, not file. Sending as a video in chat apps keeps it full-screen on the other phone.

How Vertical video works on X

Labels on the buttons use the shorter side so that a vertical video and a landscape video of the same detail get the same name. A 720×1280 clip carries the same number of pixels as a 1280×720 one, so both are “720p”.

X stores vertical renditions with the frame already upright. You don't need to rotate the file after downloading, and editors import it as a 9:16 clip.

Square videos (1:1) follow the same rule: a 720×720 file is labeled 720p.

Vertical video by the numbers

Limits and honest caveats

• Frame sizes listed are common ones at the time of writing; X can publish other sizes.
• Desktop players show black bars at the sides; that's display only, not in the file.

Reusing vertical clips on other platforms

A 9:16 file from X already matches the frame used by Reels, Shorts, TikTok and WhatsApp Status, so it can be uploaded without cropping or bars. The usual caveat applies: re-posting someone else's clip needs their permission, and platforms detect re-uploads of copyrighted material.

Going the other way loses a lot. Turning a landscape 16:9 clip into a vertical one means cropping away about two thirds of the width, or adding bars above and below. Start from a vertical upload whenever the original exists in that shape.

For editing, set the project to 1080×1920 (or 720×1280 when that's the top rendition) before importing, so the editor doesn't letterbox the clip inside a landscape timeline.

Phones record vertical video with a rotation flag in some cases, but X normalises the frames during upload, so the file you download already stands upright in every player.

When a vertical video looks squashed on a computer, the player rather than the file is usually at fault; VLC, QuickTime and current browsers all respect the 9:16 frame.

Questions people ask