1: DL GraphEdit -
http://en.wikipedia.org/wiki/GraphEdit
2: Unzip and open graphedit (GraphEdt)
(Cut 'n paste + edit)
Using GraphEdit, go to: Graph > Insert Filters > Multiplexer Devices > Hauppauge WinTV PVR PCI II Encoder and Insert Filter.
(Or simular!!!)
Then right click on the filter and select properties. Under the "Hauppauge ECP Video" tab change the Bitrate Average to "6000", the Peak to "12000"