From VDR Wiki
The remote plugin (also called remote control plugin) extends the remote control possibilities of VDR. It's about a modular add on to VDR, which in particular makes use of the original IR receiver of the Hauppauge Nexus rev. 2.1/2.2 DVB card. Both, the old black and the new silver are supported. Furthermore every remote control that speaks RC-5 could be used.
See README file