-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)
+ --video-password PASSWORD Video password (vimeo, smotri, Youku)
## Post-processing Options:
-x, --extract-audio Convert video files to audio-only files (requires ffmpeg or avconv and ffprobe or avprobe)