if you record it from TV, you can edit out whatever you want and use to filters to help with a better picture using this
http://www.download.com/Video-Encoder-X ... ag=lst-0-9
It's a 14 day free trail, takes a little to get use to the filters. If you have alod vcr tapes, it helps them alot. You might have to see if it will work with your computer if you have an older one.
I did a fast look up and found a site that might help you. I'm not sure, but if you look around and hit on the links if this site is no good, you might find what you are looking for. Good Luck
http://en.wikipedia.org/wiki/BBC