Startup School live video feeds have a long tradition of being horrible, not necessarily because streaming video doesn't work, but more often because Hundreds of Nerds With Wireless Devices means Bad Things for every wireless network within 1000 feet of the conference.

When we did them on JTV, we had more than enough viewing capacity to handle the stream, but the uplink was always horrible, even when we had a "dedicated" network. When you have that many "sophisticated" users (i.e. bandwidth hogs) in one space, you're pretty much going to saturate any upstream bandwidth that hasn't been carefully provisioned for the event.