I've had this working on many other sites without any problem. But I'm stumpted.

here's the url:
www.wonderbolt.ca

I don't have it there right now as it's not working, but please see screenshot. imgur.com/jpYRcLi

This is the code I'm using: is {mp4}wonderbolt_promo{/mp4} the width and height are set to 500x400 but only a sliver of the video is showing.

Thanks for your assistance!