<audio>
and <video>
tags without Javascript.video/quicktime; codecs="avc1.4d401f"
<video preload="auto" controls="controls" autoplay="autoplay">
<source src="https://ftp.nluug.nl/pub/graphics/blender/demo/movies/ToS/tears_of_steel_720p.mov" type='video/quicktime; codecs="avc1.4d401f"'>
</video>
HTMLMediaElement.canPlayType('video/quicktime; codecs="avc1.4d401f"')
→ MediaSource.isTypeSupported('video/quicktime; codecs="avc1.4d401f"')
→