On my Windows PC I use Ulead Media Studio Pro 7.0 for video editing, and
Ulead DVD MovieFactory for DVD authoring.
iDVD looks to be light-years ahead of Ulead's product in terms of slickness,
but there are some features I am missing on my Mac.
Media Studio Pro allows software real-time capturing from DV video sources
directly to VCD compliant MPEG1 or DVD compliant MPEG2. It requires a decent
processor to do it (I get "pretty good, but not perfect" results from my
1.4 GHz Pentium-M laptop), but for quick and simple jobs, it sure beats
capturing and encoding.