Sometimes the down loader will indicate that a movie was downloaded but when you click on the movie, your redirected to the website where the movie was supposedly downloaded from

Not working with Firefox 89.0

Developers did not think about let us determine where the downloaded video would be found.

a part se connecter à internet pour telecharger d'autre logiciel l'extention ne sers à rien la video passe sans aucun telechargement, ce qui parraissait interressant sur un petite bande passante n'est qu'une vaste fumisterie : une perte de temps

It does not work.
It wants to install other software.

Anyway I would never install it in my main browser, because its code is secret and it can see all my passwords and other things that I write.

See:

https://support.mozilla.org/en-US/kb/permission-request-messages-firefox-extensions#w_access-your-data-for-all-websites

"The extension can read the content of any web page you visit as well as data you enter into those web pages, such as usernames and passwords."

good

very nice