X (Twitter) Video and Image Sizes 2026

X and Threads both target short-form text with media, and their video specs are similar enough to cross-post the same content. The strategic difference is in distribution and audience.

X strengths: Breaking news culture, larger existing audience, strong presence in tech, finance, and political discourse. If your content is timely or opinion-driven, X's real-time feed rewards it. X also has a more developed creator monetization program (X Premium, creator ads).

Threads strengths: Faster organic reach for new accounts, Meta's algorithmic distribution, and a culture that skews toward longer posts (500 characters vs X's 280 standard). Threads is growing faster and the algorithm is less saturated.

X video size requirements vs Threads video specs: X supports H.264 only (H.265 not accepted), max 512MB, 2:20 standard. Threads inherits Instagram's specs: H.264, up to 1GB, 5 minutes max. If you're cross-posting, export at X's constraints — under 512MB, H.264 — and it works on both.

Character limits: X standard is 280 characters (X Premium gets 25,000+). Threads allows 500. Write your caption for X first (280 chars), then expand for Threads. This forces clarity that often makes the Threads version better too.

The practical answer: post to both. They take the same content, the same video file, and the same caption with minor length adjustment. Xroad Studio posts to X and Threads simultaneously in one upload.

X Premium (formerly Twitter Blue) changes several X video size requirements and posting capabilities. Here's what's different and whether it's worth it for content creators.

Video length: Standard: 2 minutes 20 seconds. X Premium: up to 3 hours. This is the biggest practical difference for video creators. Long-form video — tutorials, interviews, webinar recordings — is only possible with X Premium.

Character limit: Standard: 280 characters. X Premium: 25,000 characters (long-form posts, formerly "Articles"). For text-heavy content or SEO-style posts, Premium enables LinkedIn-style long-form.

Reach: X Premium replies are boosted in conversations. Posts from Premium accounts may receive slightly more distribution in replies to high-engagement posts. The reach benefit is modest and debated.

Who should subscribe: Video-first creators who regularly produce content over 2:20 will immediately benefit. For most creators posting short clips (under 60 seconds), X Premium's video extension isn't the deciding factor. The 4K video quality uplift that Premium previously offered has been largely made available to all accounts.

X's 2-minute 20-second video cap for standard accounts forces a discipline that often improves content. Most high-performing X videos are under 60 seconds — X's algorithm weights completion rate heavily, and completion drops sharply beyond 90 seconds.

The practical implication: if you have a 3-minute video, edit it down to under 60 seconds for X and link to the full version on YouTube. You get the engagement signal on X and the watch time on YouTube.

Xroad Studio exports at the correct X dimensions automatically. Post to X and up to 8 other platforms in the same workflow — no manual resize or re-export. For the full list of supported formats and the Premium upload limits, see the X video upload help page.