$(function() {

var $allVideos = $("iframe[src^='http://player.vimeo.com'], iframe[src^='http://www.youtube.com'], object, embed"),
    $fluidEl = $("figure");
$allVideos.each(function() {
    $(this)
        // jQuery .data does not work on object/embed elements
        .attr('data-aspectRatio', this.height / this.width)
        .removeAttr('height')
        .removeAttr('width');
});
$(window).resize(function() {
    var newWidth = $fluidEl.width();
    $allVideos.each(function() {
        var $el = $(this);
        $el
            .width(newWidth)
            .height(newWidth * $el.attr('data-aspectRatio'));
    });
}).resize();

});