"My Week With Marilyn" is based on Clark's diary of the week. Kenneth Branagh plays Olivier and Dougray Scott plays Miller. Eddie Redmayne stars as the 23-year-old Clark.
The film will premiere Oct. 9 at Alice Tully Hall. It's to be released by the Weinstein Company on Nov. 4.
The 49th New York Film Festival runs Sept. 30 through Oct. 16.