Auto play media (video/sound) when in viewport. Currently just supporting youtube and vimeo videos.
Youtube Video (API will be loaded automatically):
<iframe data-feature="autoplayview-media" data-type="youtube" scrolling="no" frameborder="0" width="560" height="315" src="https://www.youtube.com/embed/dQw4w9WgXcQ?enablejsapi=1" allowfullscreen></iframe>
Vimeo Video:
<iframe data-feature="autoplayview-media" data-type="vimeo" scrolling="no" frameborder="0" width="560" height="315" src="https://player.vimeo.com/video/78329678" allowfullscreen></iframe>
<!-- Vimeo API -->
<script src="https://player.vimeo.com/api/player.js"></script>