Proc Amp / histogram while Preview in VirtualDub
 

Hello :). I use an ATI 9600 to capture my VHS tapes. My process of adjusting the ProcAmp levels is to activate Histogram in VirtualDub and turn on Preview. Then I can see the blue moving up and down, and I adjust brightness first and the contrast to make sure that there are no hard borders between blue and red.

However, I think I have seen somewhere that it is possible to adjust ProcAmp while being able to watch the picture and the changes. Because right now when I am in Preview with Histogram the picture disappears / becomes black. Perhaps with something called GraphEdit, which I have installed, but I can't locate the correct filter.

Any suggestions?