How to pick your ideal HDMI or HD-SDI interface for WireCast (Pro)
http://provideocoalition.com/atepper...r-wirecast-pro

Good article comparing Blackmagic Quad (cross platform), Matrox Multi (Mac), Matrox VS4 and their use with Wirecast. Also a discussion of the knotty problems of "progressive" camera output (the various flavors) and how to handle.