Copy the x.com link
Share → Copy link on the post containing the video.
Built for x.com links as they are today — paste the post address and save the video in the highest quality it carries.
Plenty of downloaders were written when the site was still called Twitter and never updated their link handling, so an x.com address comes back as "unsupported URL". This page exists because that is a genuinely common failure, and it is a silly reason to be unable to save a video.
x.com links are treated as first-class here, alongside the older twitter.com format. Video on X is published in several bitrates; every one is listed with its resolution and estimated size so you can pick the best rather than accepting whatever the player streamed.
Share → Copy link on the post containing the video.
The x.com address works exactly as copied.
Pick the highest quality and save the MP4.
They were built for twitter.com URLs and never updated after the rename. Here x.com is handled directly.
It is the same platform and the same files. What changed is the domain, not the video.
Copy the link of the post that actually contains the video rather than the one quoting it.
No. No login is requested and only publicly visible posts are supported.
One tool per job, so each page tells you exactly what that platform can and cannot do.