Yes, the Barabar caves level of finish is astonishing, and the more complex one is done with metric measures (circular part is 5995 milimeters of diameter, 3,55 meters of height).

The long interview has an initual excerpts and comments about the documentary Builders of the Ancient Mysteries, specially about the less than 30 microns precision of the finishing of some of the surfaces (even the Puma Punku surfaces), and also some talk about the meter. The rest of the conversation is about the motivations of the maker of the Builders of the Ancient Mysteries documentary (Patrice Pooyard) and some anecdotes that have happened since he produced "the Revelations of the Pyramids", and some technical details about the things he has been able to examine up close. Also some talk about how hard has been for him to make the documentaries in economic terms and how he has rejected offers to sponsor him to maintain independence. He talks again about the meter in the ancient world, and also about his project of doing a specific full documentary about the Barabar caves and what he has discovered since.

He has a strong French accent, not easy to follow, but I enjoyed the video altogether, but if you don´t want to see it entirely, give a try to the first 7 or so minutes where images of the BAM documentary are shown and leaves you wanting to see it.