## Authentication Options:
-u, --username USERNAME login with this account ID
- -p, --password PASSWORD account password
+ -p, --password PASSWORD account password. If this option is left
+ out, youtube-dl will ask interactively.
-2, --twofactor TWOFACTOR two-factor auth code
-n, --netrc use .netrc authentication data
--video-password PASSWORD video password (vimeo, smotri)