Echo 360 is software available in many UML classrooms for lecture capture. You can also download it and use it to create lectures at home.
Echo 360 produces very high quality products, but it takes a little time to learn. Still, if you want a tool to blend your existing slide decks with video of you talking, this is a great, highly customizable option. The links above have more information, but to help you navigate:
UML Instructional Technology (link above) offers webinars and assistance here.
There's an example of a UML on campus lecture here.
The UML Continuity of Learning site also has more information here.