Adicionando MP4 em 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>
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