Video controller="false"

Hi there! Can you please help me?

I’d like to embed video clip without visible controller.

This is the code I use:
<div align=center>
<p><embed src=”http://www.tangens.si/wp-content/uploads/2013/05/Razvoj2013-01-Cellular.m4v&#8221; width=”500″ height=”250″ autoplay=”true” controller=”false” loop=”true” ></embed>
</p>
</div>

On my Mac everything works fine (in Safari and Firefox), but on PC (Win 8) controller is visible. What is wrong with my code?

Kind regards,
Mirko

http://ww.wp.xz.cn/extend/plugins/video/