Well, I will post what I found, in case anyone else should at some point seek this kind of information, here is where I found what I needed:

http://www.videohelp.com/tools/secti...ditors-mpg-dvd

That link gives you all kinds of clickable lists to refer to, depending on the kind of help you need.

I am using MPEG Streamclip with Quicktime alternative, which serves my immediate purpose of editing and saving out MPEG-2 video. This tool reads and writes a multitude of formats. It has other capabilities too, but I have not investigated it extensively yet.

waves