gistfile1.txt

// BUILD VIDEO SOURCE
 		var mp4 = $('#home-video-div').attr("data-mpfour");
 		var webm = $('#home-video-div').attr("data-webm");

 		$('#bgvid').append('<source src="'+ mp4 +'" type="video/mp4"><source src="'+ webm +'" type="video/webm">');


		// SCALE VIDEO SOURCE
		$('#home-video-div').delay(200).velocity({ opacity: 1 }, { display: "block" });

		var scale = 1;
		var videoRatio = 16 / 9;
		var viewportRatio = $(window).width() / $(window).height();
		 
		if (videoRatio < viewportRatio) {
		    // viewport more widescreen than video aspect ratio
		    scale = viewportRatio / videoRatio;
		} else if (viewportRatio < videoRatio) {
		    // viewport more square than video aspect ratio
		    scale = videoRatio / viewportRatio;
		}
		$('#bgvid').velocity({
			scaleX: scale,
			scaleY: scale
		});