[wpvideo tFnqC9XQ w=680] VideoPress, especially as a video post format, usually provides some unique styling issues. You will need to install Jetpack or Slim Jetpack plugin to turn the shortcode into a viewable video.
http://www.youtube.com/watch?v=nwe-H6l4beM The official music video of "Rise Up" from Eddy's Start An Uproar! EP. Learn more about WordPress Embeds.