class YoutubeIE(InfoExtractor):
"""Information extractor for youtube.com."""
- _VALID_URL = r'^((?:https?://)?(?:youtu\.be/|(?:\w+\.)?youtube(?:-nocookie)?\.com/|tube\.majestyc\.net/)(?!view_play_list|my_playlists|artist|playlist)(?:(?:(?:v|embed|e)/)|(?:(?:watch(?:_popup)?(?:\.php)?)?(?:\?|#!?)(?:.+&)?v=))?)?([0-9A-Za-z_-]+)(?(1).+)?$'
+ _VALID_URL = r"""^
+ (
+ (?:https?://)? # http(s):// (optional)
- (?:youtu\.be/|(?:\w+\.)?youtube(?:-nocookie)?\.com/) # the various hostnames, with wildcard subdomains
++ (?:youtu\.be/|(?:\w+\.)?youtube(?:-nocookie)?\.com/|
++ tube\.majestyc\.net/) # the various hostnames, with wildcard subdomains
+ (?!view_play_list|my_playlists|artist|playlist) # ignore playlist URLs
+ (?: # the various things that can precede the ID:
+ (?:(?:v|embed|e)/) # v/ or embed/ or e/
+ |(?: # or the v= param in all its forms
+ (?:watch(?:_popup)?(?:\.php)?)? # preceding watch(_popup|.php) or nothing (like /?v=xxxx)
+ (?:\?|\#!?) # the params delimiter ? or # or #!
+ (?:.+&)? # any other preceding param (like /?s=tuff&v=xxxx)
+ v=
+ )
+ )? # optional -> youtube.com/xxxx is OK
+ )? # all until now is optional -> you can pass the naked ID
+ ([0-9A-Za-z_-]+) # here is it! the YouTube video ID
+ (?(1).+)? # if we found the ID, everything can follow
+ $"""
_LANG_URL = r'http://www.youtube.com/?hl=en&persist_hl=1&gl=US&persist_gl=1&opt_out_ackd=1'
_LOGIN_URL = 'https://www.youtube.com/signup?next=/&gl=US&hl=en'
_AGE_URL = 'http://www.youtube.com/verify_age?next_url=/&gl=US&hl=en'