HTML Videos Loop & Autoplay

I’ve tried setting them to be true and changing the order in some hope it will help. So far it’s not working I’m sure the videos silent but I muted it anyway. I want it to autoplay and loop. It does neither, if anyone can help it’s greatly appreciated.

<video loop autoplay muted class=”VideoMain”>
<source src=”A.mp4″ type=”video/mp4″>
</video>“`