X (formerly Twitter) Media Upload v1.1 API Endpoints
On Monday, 9 June 2025, the social-media platform X deprecated its v1.1 media-upload endpoints and required users switch to their v2 API. You can read more in the announcement on X’s community site: X media upload endpoints update and extended migration deadline.
How am I impacted?
The X ProMediaAPI has been retired:
This means that video-thumbnail editing is no longer be possible.
In addition, the limits for video uploads are changed according to the values below:
Limit name | New values (standard) | Previous values (ProMediaAPI) |
|---|---|---|
Maximum video duration | 140 seconds | 10 minutes |
Maximum file size | 512 MB | 1 GB |
Maximum dimensions | 1920 × 1920 | 2160 × 2160 |
Action required
If you are an X ProMediaAPI user with posts scheduled in Publisher, you may receive a publishing error for posts you scheduled with the old platform limits. If you receive a publishing error, verify that the video content of the post is within the new platform limit values.
At this time, X has not revealed any alternatives to their ProMediaAPI. Until an alternative solution is provided, you will be unable to upload video content that exceeds their standard platform limits. Editing video-thumbnails will also not be possible.
Learn more:
X (formerly Twitter) Publishing