Media upload and Post-create size and duration limits
By Steven Van ·
We documented the size and duration limits that apply when uploading media and when attaching it to a Post.
X (formerly Twitter) has published the size and duration limits that apply to media uploads and to attaching that media to a Post, via its X API. Upload and POST /2/tweets are enforced separately, and the caps follow the posting account's X Premium or verified status rather than the developer's API plan.
- Default accounts can post video up to 20 minutes and 8 GB.
- X Premium and verified accounts can post video up to 125 minutes and 16 GB.
- Direct Message video limits are unchanged: 140 seconds and 512 MB by default, 10 minutes and 1 GB for Premium.
- Posting a video that exceeds the account's duration cap now returns a 403 with the message "This user is not allowed to post a video longer than N minutes."
- The chunked upload quickstart has been updated to use the v2 endpoints, POST /2/media/upload/initialize, /{id}/append, and /{id}/finalize, replacing the earlier command-style POST /2/media/upload flow.
The changelog entry is a documentation clarification rather than a change in behaviour.
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