Hi, I've attached a pic of the event that occurs in Firefox 11 when I add an MP4 video with the default generated placeholder code.

Click image for larger version.  Name: bad-vid-code.jpg  Views: 126  Size: 51.9 KB  ID: 89021

The video plays fine (top), the Video frame "...format or MIME type..." below is anomalous. Anyone have a quick fix?

Thanks,

Alex