It was not a hot case. It was a civil matter involving patent infringement of a toilet flushing system.
The video feed is available to watch on the court's Northern District of Illinois website.
Only civil trials will be recorded -- not criminal cases -- and only if all the parties in the case agree that it's OK.
It took more than a year to find participants who were willing to be involved.
Cook County's chief judge says he hopes to have cameras in the county's courtrooms by the end of the year.