gistfile1.js

$(".video").fancybox({
  aspectRatio: true,
  beforeLoad: function() {
    this.title = $(this.element).children('aside').html();
    this.tpl.prev = "<a title='Previous' class='fancybox-nav fancybox-prev'>The Previous Title</a>";
    this.tpl.next = "<a title='Next' class='fancybox-nav fancybox-next'>The Next Title</a>";
    console.log($(this.element).parent().next().children());
  },
  height: 540,
  loop: false,
  padding: 0,
  width: 960,
  helpers: {
    title: {
      type: 'outside'
    }
  }
});