<audio>
and <video>
tags without Javascript.video/webm; codecs="av01.0.4M.8.0.110"
<video preload="auto" controls="controls" autoplay="autoplay">
<source src="https://woolyss.com/f/caminandes-1-llama-drama-av1-opus-480p.webm" type='video/webm; codecs="av01.0.4M.8.0.110"'>
</video>
HTMLMediaElement.canPlayType('video/webm; codecs="av01.0.4M.8.0.110"')
→ MediaSource.isTypeSupported('video/webm; codecs="av01.0.4M.8.0.110"')
→