Create a Wordpress shortcode for lazy loading videos

lazyYT.php

function lazy_load_videos($atts) {
	$a = shortcode_atts( array(
        'id' => 'something else',
        'width' => '',
        'height' => ''
    ), $atts );
	$stringbean = '<div class="js-lazyYT ';
	if( !empty($a['height']) ){
		$stringbean .= '" data-height="'.$a['height'].'" style="height:'.$a['height'].'; width:'.$a['width'].';" data-width="'.$a['width'].'"';
	}else{
		$stringbean .= 'jz-lazyYT-padd " data-ratio="16:9" data-width="1280" data-height="720"';
	}
	$stringbean .= 'data-youtube-id="'.$a['id'].'" data-parameters="rel=0&showinfo=0&modestbranding=1&vq=large&wmode=transparent"></div>';
	
	return $stringbean;
}
add_filter('widget_text', 'do_shortcode');
add_shortcode('lazyload', 'lazy_load_videos');