from
http://www.videohelp.com/forum/viewtopic.php?p=647466
Give vcd with combo 1 at 60% and sharp at 15% a try. On your guide (which is excellent) you said that you only use no filtering or heavy and that the in between settings make little or no difference. Capture a TV show with vcd settings and I think you will find the picture washed out. But add the filters I suggested above and it somehow restores the colors and makes the video look like much higher resolution. Try it.
I know the effect is a cheat. Information is lost by capturing to a low bitrate and then artificially "put back" by the filters so no one would want to use it for cinematic masterpieces but for my personal set of Gilligan's Island episodes it's great.