element.height = 200;
    element.width = 200;
    element.appendHtml("""<video width="400" controls>
  <source src="mov_bbb.mp4" type="video/mp4">
  <source src="mov_bbb.ogg" type="video/ogg">
  Your browser does not support HTML5 video.
</video>
    """);
    element.querySelector('#video');
    element.play();