title: HTML5 video with alpha chanel in Safari
body: <p>I've already seen a lot of examples, but none of them work in safari.</p>
  
  <p>For example: </p>
  
  <ul>
  <li><a href="https://jakearchibald.com/scratch/alphavid/" rel="nofollow noreferrer">https://jakearchibald.com/scratch/alphavid/</a></li>
  <li><a href="https://simpl.info/videoalpha/" rel="nofollow noreferrer">https://simpl.info/videoalpha/</a></li>
  <li><a href="http://www.sciencelifeny.com/transparency/transparency.html" rel="nofollow noreferrer">http://www.sciencelifeny.com/transparency/transparency.html</a></li>
  </ul>
  
  <p>Also I know about APNG but it is not supported in IE and Edge.
  There is a seeThru library, but to work with it you need to create a mask. Is there a cross-browser solution?</p>