X (Twitter)

X (Twitter) Video Ad Ad Size: 1200×1200 px

Aspect ratio 1:1 · 1200×1200 pixels · MP4, MOV

1:1 or 16:9 promoted video, up to 2:20 (matching a Tweet's video limit).

Dimensions
1200×1200
Aspect
1:1
Max file
1.0 GB
Length
0–140s
Resize to 1200×1200
Safe area
1200 × 1200 px

Why this size matters

X's video autoplay-in-timeline is muted. Captioned, subject-in-frame video with a clear payoff by 3s outperforms everything else.

At a glance
Formats
MP4, MOV
Max file size
1.0 GB
Length
0–140 seconds
Best for
Short conversational video content.

Design tips that actually move the needle

  1. 01Square (1:1) takes more feed real estate on mobile than 16:9.
  2. 026-15s for feed. Under 6s doesn't count as a view.
  3. 03Caption burn-in — X's SRT rendering is inconsistent across clients.

People also ask

How long can an X video ad be?+

Up to 2 minutes 20 seconds (matching organic Tweet video). Practically, 6-15s completes best.

What is 1:1 in pixels?+

For X (Twitter) Video Ad, a 1:1 aspect ratio is 1200×1200 pixels. Any resolution with the same ratio works, but 1200×1200 px is the recommended native size and avoids upscaling.

Is 1200×1200 the right size for X (Twitter) Video Ad?+

Yes — 1200×1200 px (1:1) is the recommended X (Twitter) Video Ad ad size. Accepted formats: MP4, MOV. Maximum file size: 1.0 GB.

Related sizes

X (Twitter)
Image Ad · 1600×900
16:9 · Announcements and community-driven brand moments.
Instagram
Reel · 1080×1920
9:16 · Native, sound-on video that mimics organic Reels.

Free tools for this size

Aspect ratio reference

→ 1:1 aspect ratio: pixel sizes, mm and placements

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