Integrar mp4in html

la adición de mp4 en html

<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 HTML video.
</video>

<video width="400" controls>
  <source src="mov_bbb.mp4" type="video/mp4">
 
  Your browser does not support HTML video.
</video>