I supported one of the popular course capture systems when they were getting off the ground. It got its start because they enrolled more students than than the lecture hall could hold. Crappy weather would be a perfect use for such a system and was used while I was maintaining it..
"You know how we made that?" he asked me. "Lights, a sound man, two cameras, a week per session and they had me in makeup. You know how they do it now? The kids hold up their (censored) iPhones in class!"