Collect list of YouTube favorites as a JSON string. Run this code in your Javascript console while at https://www.youtube.com/my_favorites

youtube_favs.js

all = {}; $('#vm-playlist-video-list-ol li').each(function(){
  var self = $(this),
      id = self.attr('id').substring(9),
      title = self.find('a.vm-video-title-content').text(),
      url = self.find('a.vm-video-title-content').attr('href').split('&',1),
      user = self.find('a.yt-user-name').text(),
      time = self.find('.video-time').text();
  all[id] = {
    id: id,
    user: user,
    time: time,
    url: url.toString(),
    title: title
  };
}); console.log(JSON.stringify(all));