Quick answer
To download an X or Twitter video, use the public post URL and choose HD MP4, SD MP4 or MP3 depending on the available formats.
Since Twitter became X, search intent still uses both names. What matters is pasting the exact public post URL that contains the video.
Which X URLs are valid
Public posts on x.com or twitter.com are supported. Short t.co links work best once they resolve to the final public post.
- Copy the post URL, not the profile.
- The post must stay public.
- Restricted or removed posts expose no usable format.
Why X detection can fail
Incomplete redirects, private posts or links that do not contain a direct video post can break extraction.
- Copy the link again from the share button.
- Make sure it is a public video post.