Quick answer
If a Vimeo video is private or password protected, the download will not work without direct public access.
A password-protected Vimeo video may still play for you, but it does not expose a usable public media stream for the open web.
What Vimeo blocks
Private, password-protected or domain-limited Vimeo videos do not expose a stable public stream.
- Only public pages are supported.
- A private embed is not enough.
- Password gates remove public access.
How to verify the video status
Open the URL in a private browser window. If Vimeo asks for a password or shows a restriction, the link is not downloadable from the website.
- Test while logged out.
- Check whether the page is truly public.