<audio>
and <video>
tags without Javascript.video/x-msvideo
<video preload="auto" controls="controls">
<source src="https://woolyss.com/f/mpeg4-mp3-sita.avi" type='video/x-msvideo'>
</video>
HTMLMediaElement.canPlayType('video/x-msvideo')
→ MediaSource.isTypeSupported('video/x-msvideo')
→