<audio>
and <video>
tags without Javascript.audio/amr
<audio preload="auto" controls="controls" autoplay="autoplay">
<source src="https://techslides.com/demos/samples/sample.amr" type='audio/amr'>
</audio>
HTMLMediaElement.canPlayType('audio/amr')
→ MediaSource.isTypeSupported('audio/amr')
→