Dropbox password-protected folder?

[AstraLuma]

Checklist

• I'm reporting a site feature request
• I've verified that I'm running youtube-dl version 2019.09.12.1
• I've searched the bugtracker for similar site feature requests including closed ones

Description

Dropbox has the option for password-protected folders--"public" links, but you need to put in a password to access the contents.

How do I specify that?

(To be clear, I'm looking at a folder with downloads disabled.)

[remitamine]

How do I specify that?

--video-password PASSWORD        Video password (vimeo, smotri, youku)

however, the option won't work for DropBox because both DropBox folders and password-protected are not yet supported.
for individual password-protected videos, using cookies might help.
anyway in order to add support, you can fill a proper support request(including the URL of a page that you're willing to share its password).