Well, I have the KLM Codec pack with Media Player Classic. Play the video in MPC and rightclick on the video, select filters > ffdshow video decoder > properties - when a window with the settings comes up, select "noise" and if you keep the video running throughout the whole process, you can fiddle with the settings and immediately see the results.

Then, when you leave these settings on when you're closing the player and then re-encode the video with RipBot, it will apply those settings.