I bought Replay Video Capture and I can't record video playing from one of my DVRs on my home network. I did a test capture of starting up the DVR player software and recording at least 2 mins of video. When I watched the test video I was able to see the desktop, all mouse clicks, the menu of videos on my DVR and all the control keys like (play, pause, stop, etc.) but the actual video from the DVR was blank. So it recorded EVERYTHING except the actual video. I thought I would be able to record anything I could actually see on the PC's screen. Am I doing something wrong?

Mike