How can I stop self-closing tag "source" in drupal 7 when render HTML?

I use this code in node body

   <video><source src="myvideo.mp4" type="video/mp4" />
my title</video>

and get this in view source page code

   <video><source src="myvideo.mp4" type="video/mp4" />
my title </source></video>

source closing automaticly and this is not valid html.