Youtube validate and ID grab

youtube.js

var urls = [
    '//www.youtube-nocookie.com/embed/up_lNV-yoK4?rel=0',
    'http://www.youtube.com/user/Scobleizer#p/u/1/1p3vcRhsYGo',
    'http://www.youtube.com/watch?v=cKZDdG9FTKY&feature=channel',
    'http://www.youtube.com/watch?v=yZ-K7nCVnBI&playnext_from=TL&videos=osPknwzXEas&feature=sub',
    'http://www.youtube.com/ytscreeningroom?v=NRHVzbJVx8I',
    'http://www.youtube.com/user/SilkRoadTheatre#p/a/u/2/6dwqZw0j_jY',
    'http://youtu.be/6dwqZw0j_jY',
    'http://www.youtube.com/watch?v=6dwqZw0j_jY&feature=youtu.be',
    'http://youtu.be/afa-5HQHiAs',
    'http://www.youtube.com/user/Scobleizer#p/u/1/1p3vcRhsYGo?rel=0',
    'http://www.youtube.com/watch?v=cKZDdG9FTKY&feature=channel',
    'http://www.youtube.com/watch?v=yZ-K7nCVnBI&playnext_from=TL&videos=osPknwzXEas&feature=sub',
    'http://www.youtube.com/ytscreeningroom?v=NRHVzbJVx8I',
    'http://www.youtube.com/embed/nas1rJpm7wY?rel=0',
    'http://www.youtube.com/watch?v=peFZbP64dsU',
    'http://youtube.com/v/dQw4w9WgXcQ?feature=youtube_gdata_player',
    'http://youtube.com/vi/dQw4w9WgXcQ?feature=youtube_gdata_player',
    'http://youtube.com/?v=dQw4w9WgXcQ&feature=youtube_gdata_player',
    'http://www.youtube.com/watch?v=dQw4w9WgXcQ&feature=youtube_gdata_player',
    'http://youtube.com/?vi=dQw4w9WgXcQ&feature=youtube_gdata_player',
    'http://youtube.com/watch?v=dQw4w9WgXcQ&feature=youtube_gdata_player',
    'http://youtube.com/watch?vi=dQw4w9WgXcQ&feature=youtube_gdata_player',
    'http://youtu.be/dQw4w9WgXcQ?feature=youtube_gdata_player'
];

console.log('Youtube URLS:', urls.length);
var urlReg = /(https?:)?\/\/(www\.)?youtu(\.be|be(-nocookie)?\.com)(\/(vi?|embed)\/|\/.*\?.*vi?=|\/user\/.*\/|\/)([a-zA-Z0-9_-]{11})($|\?|\&)/;

var ids = [];

urls.forEach(function(url) {
  var matches = url.match(urlReg);
  console.log(url);
  console.log(matches[7]);
  ids.push(matches[7]);
});

console.log(ids);
console.log('Found %d IDs', ids.length);