Feature request to Video Block. Allow to specify alternative video formats when uploading media elements.

[cflornet]

Hi,

I have a feature to suggest to the video block: to add alternate video formats.
As it is with shortcodes: [video webm="video.webm" mp4="video.mp4"] or some themes or html5:

 <video controls>
  <source src="movie.webm" type="video/webm">
  <source src="movie.mp4" type="video/mp4">
 </video>  

Something like this:

<!-- wp:video {"id":0001} -->
<figure class="wp-block-video"><video controls src="video.webm" src="video.mp4"></video></figure>
<!-- /wp:video --> 

Thanks for your work!