Vimeo-omeka-module/asset/js/media_dimensions.js

function adjust_vimeo_height() {
	$(".embeded-vimeo-wrapper").each(function() {
    var iframe = $(this).find('iframe')
    var height = $(iframe).width() / $(iframe).attr('ratio')
		$(iframe).prop("height", height)
	});
}

jQuery(document).ready(function() {
	adjust_vimeo_height();
});

$(window).resize(function() {
  adjust_vimeo_height();
});