The Open Mobile Video Coalition, which is working with technology companies and TV broadcasters nationwide to roll out mobile TV using a station’s existing infrastructure and spectrum, announced today it has received commitments in 63 markets, covering 35 percent of the country. I covered the news earlier today based on a press conference, but since there were no good demonstrations, I had to visit the LG (SEO: 066570) booth this afternoon to see how the service works. Excuse the poor video. It was loud and there was no one there to walk me through the service, so I stumbled through it on my own. What I saw: Nine stations are live in Las Vegas, including CNBC, Fox, CW, ABC, Qubo, Fox News, Cool Music Network, and NBC. I was able to flip through channels fairly easily, although there was a bit of buffering between. There was a nice TV guide, which allowed you to browse through the channels while watching your most recent channel. But I’m sure this is just a working prototype of the user interface given that consumers don’t even have a chance of buying a device until much later this year.