Video auto-embed not working

Hi
I can’t get the auto-embed to work for videos on the site http://www.larrysbarge.com/ I’ve used Viper’s Video Quicktags plugin & that works fine in conjunction with Responsive Video Embeds plugin to make it responsive except when it view it on IOS devices – it loses the play button & title, you wouldn’t know it’s a video to be played. I’m thinking the root problem is auto-embed not working. I’ve auto-embeddded it on another site & with fitvids it works perfectly on all devices. Tried numerous solutions: deactivated the plugins; reverted to twenty-twelve theme; made sure the code was on separate line etc. to no avail.
Really appreciate some help on this.