What Is Brazil? (1985)
https://www.youtube.com/watch?v=qeyXADf1fyk - from the Behind The Science Fiction YouTube channel (28 mins.)

“What is this film called Brazil? Find out in this witty documentary.”
This is a promotional film made for Brazil (1985) and has interviews and behind the scenes footage, including filming of a deleted snooker ball eye landscape scene. This was before the film’s release battle with Sid Sheinberg.

Backup link:
https://www.youtube.com/watch?v=da4De6UXPNQ