You might be able to use the VidBlaster Trial Edition (free) to do just the Instant Replay function and then take the Video Out from VidBlaster as a camera input in Wirecast. When I get back from the holidays I will give that a try.

Does Wirecast have the capability to crop a camera source? If so, then you can crop out the VidBlaster watermark and have a "clean" video replay.


P.S. VidBlaster is now working on a Playlist/Playout function for Version 3. Stay tuned.