Here is about 9 minutes from Fleetwood Mac at 21 - the Peter Green era - that has just come up on Youtube. There is a very short piece of the aforementioned interview with Peter Green right at the end.
www.youtube.com/watch?v=TFxqTdeofO0
Unfortunately there are no new music footage, but a very talkative John McVie. Still great that people post these things. Maybe someday something new will turn up - hopefully!
Ms Moose