French "Bug" Film as a source for "A Bug's Life?"

Rating: Null/10 (3 December 2006)

Years ago, my brother showed me a video of insects at work, made by a French cinematographer, that seemed very much to be the source of study for much of the Pixar animation in A Bug's Life. The video was accompanied by a lovely, appropriate classical soundtrack. I was amazed at the skill involved and the way it related to the animated story developed by Pixar.
Is this film on the market? Does anyone know the title or who shot the footage? It was really beautiful, and was a perfect accompaniment for the excellent A Bug's Life. I am bug-phobic, but it made me wish I had studied entomology !