This image released by Warner Bros. Pictures shows Joaquin Phoenix, left, and Lady Gaga in a scene from "Joker: Folie à Deux." (Niko Tavernise/Warner Bros. Pictures via AP)

FILE - Director Todd Phillips, left, holds the Golden Lion for Best Film for "Joker," joined by lead actor Joaquin Phoenix at the closing ceremony of the 76th edition of the Venice Film Festival, Venice, Italy on Sept. 7, 2019. (Photo by Joel C Ryan/Invision/AP, File)

This image released by Warner Bros. Pictures shows Joaquin Phoenix, left, and Lady Gaga in a scene from "Joker: Folie à Deux." (Niko Tavernise/Warner Bros. Pictures via AP)

FILE - Joaquin Phoenix, winner of the award for best performance by an actor in a leading role for "Joker", poses in the press room at the Oscars on Sunday, Feb. 9, 2020, at the Dolby Theatre in Los Angeles. (Photo by Jordan Strauss/Invision/AP, File)

FILE - Actor Joaquin Phoenix appears at the premiere of the film "Joker" at the 76th edition of the Venice Film Festival, Venice, Italy on Aug. 31, 2019. (Photo by Arthur Mola/Invision/AP, File)

This image released by Warner Bros. Pictures shows Joaquin Phoenix in a scene from "Joker." (Niko Tavernise/Warner Bros. Pictures via AP)

This image released by Warner Bros. Pictures shows Joaquin Phoenix in a scene from "Joker." (Niko Tavernise/Warner Bros. Pictures via AP)