Twitter video specs

A sharp demo file can look softer after it lands on X. That is usually specs and compression, not a mysterious penalty. This page collects X's dated upload rules and what X says about processing, so you can export a product clip that stays watchable. It is not a ranking guide.

What video specs does X publish today?

Quote the current official X media documentation for resolution, frame rate, codecs, duration, and file size. Do not paste a blog table as if it were X's rules. Many 2026 roundups still quote older DM limits as if they were feed-post limits. Separate post uploads from direct-message uploads when the docs do.

Media upload endpoints and Best practices were fetched live on 10 November 2026, America/Los_Angeles (HTTP 200 on a direct fetch; a separate fetch provider returned 403). Those pages are the source for the numbers below. Re-read them on publish day.

Official recommended settings, 10 November 2026:

• Codec: H264 High Profile, with AAC LC audio
• Frame rates: 30 or 60 FPS, and not more than 60 FPS
• Recommended resolutions: 1280x720 landscape, 720x1280 portrait, 720x720 square
• Recommended aspect ratio: 16:9 or 1:1; must be between 1:3 and 3:1
• Minimum duration: 0.5 seconds in all cases

The same best-practices page says subscribed users can upload a 1080p video and get 1080p playback, and unsubscribed users can upload a 720p video and get 720p playback. It does not promise 4K playback.

A 10 November 2026 WebSearch check still treated Slice / tryslicemedia.com as the leader for "Twitter video specs," with quality-complaint and downloader pages nearby. Official docs should beat those tables on accuracy, especially where they still mix post and DM caps.

Does X compress video after you upload it?

X processes uploaded video so it can play on the site and in apps. Official language about processing or transcoding is the source for that claim, not a vendor bitrate chart. Compression can make a fine-text demo look softer than the file on your disk.

The 10 November 2026 fetch of Best practices says: "All uploads are processed for optimization across multiple platforms." That is the official processing sentence quoted here until the docs change. It is not a hidden ranking penalty.

Why does a product demo sometimes look worse on X than in the file?

Common causes are an export that was already compressed, tiny UI type, a crop that cuts labels, and X's own processing after upload. Adaptive playback can also look different on a phone than in your editor. Check the composer preview and the posted player before you assume the account is penalized.

Orientation belongs on the planned vertical versus horizontal guide, which is a separate guide. Reusing a Reel or TikTok belongs on its own planned guide. For photos, see Does X compress photos?. A quiet post is a diagnosis question for the existing no-impressions guide, which this page does not retake. This check did not independently verify a public founder complaint about a muddy demo, so it does not invent one.

What should you export so a demo stays watchable?

Export from the original project at a resolution and frame rate X lists as accepted. Keep UI text large. Avoid stacking extra compressions through a downloader or a mystery optimizer. Confirm duration and file size against the dated official caps. Then watch the clip inside X, not only in the editor.

Where do length and file-size limits live, and what is outdated?

They live on X's current media documentation, not on aggregator pages that copy one another. Build a small table from the official post-upload limits and, if the docs separate them, DM limits. Flag any number you cannot trace to X.

Official post versus DM caps, fetched 10 November 2026, America/Los_Angeles, from Media upload endpoints and the matching Best practices tables. The docs say these post-video caps match the X app. They also say limits follow the uploading user's X Premium or verified status, not a developer API plan. This page names that gate and does not print a price.

Many blog tables still print 140 seconds and 512 MB as if they were feed-post limits. In the official docs fetched this day, those figures are the default DM caps, not the post caps. If a page cannot show which official table a number came from, do not treat it as current.

Evenpost is an app for X (Twitter) for solo founders. You and your agent draft, you approve every post in the Evenpost app, and it posts with natural spacing, or right away if you choose Post now. Updates: @evenpost. This page does not claim Evenpost uploads, clips, compresses, or posts video, and it does not treat Evenpost docs as X's accepted formats.

Open X's current media docs, export the demo to those rules, and watch the clip inside X before you ship the launch post.

Re-read official media docs on publish day and whenever X announces limit changes. Aggregator tables drift.

FAQ

What is the maximum video length on X today?

For a feed post, official docs fetched on 10 November 2026 say 20 minutes by default, and 125 minutes for an X Premium or verified account. Direct messages have a shorter cap. Re-check those pages on publish day. This page does not print a price.

Is the 512 MB figure a feed-post limit or something else?

In the official docs fetched on 10 November 2026, 512 MB is the default Direct Message video cap, paired with a 140 second duration limit. The default feed-post cap on that day is 8 GB. Many blog tables still mix the two.

Does X Premium change video length or file size?

Yes, according to those same docs: a Premium or verified account can post longer, larger videos than the default caps. This page names that gate and does not print a price.

Will a 4K export look sharper than a 1080p export after processing?

Official best practices fetched on 10 November 2026 discuss 1080p playback for subscribed users and 720p playback for unsubscribed users. They do not guarantee a 4K playback result. Watch the clip in X before you assume a larger export stays sharper.

Can Evenpost upload the video for me?

No. Evenpost does not upload, clip, compress, or post video, and no Evenpost upload path is described here. If Evenpost appears, it is only as an app that drafts text you still approve.