MSRI Video Archive
- Available online. "In order to view these lectures, you will need the RealPlayer version 5.0 or later. For some of the latest videos from other organizations, you will need the latest RealPlayer G2."
CGTP Video Archive, Duke University - Center for Geometry and Theoretical Physics videos and associated lecture notes for selected seminars. Uses G2 Realvideo format.
Duke University Mathematics Department Video Archive - Lectures produced in the Duke University Mathematics Department Multimedia Classroom. The lectures are stored in RealVideo format and are viewable with a Real Audio 5.0 or Real Audio G2 player.
Newton Institute Web Seminars - Recordings of many of the institutes lectures and seminars, available to play on line or download. Several formats provided.