<audio>
and <video>
tags without Javascript.video/webm; codecs="vp9,vorbis"
<video preload="auto" controls="controls" autoplay="autoplay">
<source src="https://woolyss.com/f/spring-vp9-vorbis.webm" type='video/webm; codecs="vp9,vorbis"'>
</video>
HTMLMediaElement.canPlayType('video/webm; codecs="vp9,vorbis"')
→ MediaSource.isTypeSupported('video/webm; codecs="vp9,vorbis"')
→