The problem with DVD recorders is you can only input with RCA jacks (the red, white and yellow plugs.) No HD input. PVRs have no way to transfer the files to a computer. There is an IEEE jack on most, but I've been told the files are in a proprietary format which can't be viewed on a computer. I'm no expert, but the only way I know to get HD video from TV on to your computer is with the Elegato HD TV device. I don't have one, but I understand they 'record' in real time.