Harry is right on. He gave the solution that seems to maybe be the only one available at the moment. OP did not specify what type of "switcher" he needed, how many inputs/outputs, nor a price range. Reading minds may not be Harry's strong suit. You gotta work with what you have.

The AVPro might be the way to go anyhow, if the user cannot get an AVR that can handle the bandwidth, he might have an older one (again, this info is not available in this thread), and the AVPro matrix can send the audio to the receiver, while handling the video in full bandwidth. It is a niche product that can be used in several applications.