Now that’s a name I’ve not heard in a long time. Is it still under development?
Back in my teens I was really wanting to get into 3D animation and virtualdub was one of the first tools I used to create reels since the free modeling and rigging tool I used at the time didn’t have any editing capabilities.
It seems that not very much, but this is a lot of the case of finished software: it's good for its job. The author is not gone though, there is a blog post from a year ago.