gistfile1.txt

function rs_use_video_tag() {
    ?>
    var slider = $('.royalSlider').data('royalSlider'); 
    slider.ev.on('rsOnCreateVideoElement', function(e, url) {
            slider.videoObj = $('<video src="' + url + '" autoplay></video');
    });
    <?php
}
add_action('new_rs_after_js_init_code', 'rs_use_video_tag');