I don't think you'll find that video anywhere. When I get a chance, I'll make a copy for you and send it to you. I've been wanting to convert it and make available for download. But, since my computer funerals... I've been delayed.
I've got some old copies of a "reel-to-reel" tape (back before they had 8 track monster cartriges)... of Chuck C., back when he did his first retreat. Some say it was the first "spiritual retreat" that was ever done in AA. He was much younger then, and it's was held outside. You can hear roosters and donkeys in the background!
The talk was pretty much the same as he gave in his later years. What I really love on this tape, too, is the questions and answers part.