go to
http://pcvideo.tripod.com/
I was tooling around today trying to find a sharpener for virtualdub. MSU is far too slow to counteract the benefit, plus I think it introduces too much video noise into the capture. unsharp mask is not bad, not as good as MSU but too much edge enhancement, then I came across a filter on this site.
you get absolutely zip control of the filter selections, you get the default they think best, but my god it hasn't half improved mine.
I used
gentle sharpen,
saturation
and have seen a marked improvement. it almost acts like auto sharpen and auto levels in photoshop.
the sharpen in particular does an excellent job with next to no mosquito noise being created.
so the filters I use are this new filter to sharpen and saturate and donald grafts RGB filter from here http://www.neuron2.net/ to finely adjust the red bias and give a slightly better white.
I can post people a screenie or two if they're interested. my FTP isn't working so I can't put them up on here.