Altman died in 2006 at age 81. His film credits include "M*A*S*H," "McCabe and Mrs. Miller," "Nashville," "The Player," "Short Cuts," "Gosford Park" and "A Prairie Home Companion."
"I am pleased and honored to have acclaimed documentarian Ron Mann shepherd this long overdue project," Kathryn Reed Altman, Robert Altman's widow and a consultant on the documentary, said in a statement. "Ron's prodigious, challenging, engaging, and one-of-a-kind films revealed him to be the perfect choice to examine and celebrate Bob's monumental life and art. I have no doubt Bob would be happy and may well be smiling right now."
"Robert Altman reinvented not only what a movie might be, but how we might view ourselves. His films continue to inspire us today," Mann said.
The film is scheduled to be completed in mid-2013. Accompanying the documentary will be a touring exhibit, an illustrated companion book, and music soundtrack, its producers said.