"Robin Williams' performance as a man in a heartbreaking struggle to find his place in the world is both heroic and poignant and Boulevard is an extraordinary coda to an indelible performer's life," Andy Reimer, a partner of Inception Media Group, said in a statement.
Directed by Dito Montiel and written by Douglas Soesbe, the film co-stars Kathy Baker, Bob Odenkirk and Roberto Aguire.
"The routine of everyday life quietly peels away to reveal the struggle of a loving husband in conflict with his inner self," a synopsis said.
"Nolan Mack and his wife Joy wake up under the same roof each morning, their separate bedrooms underscoring the disparate worlds they're living in. Nolan's disconnection carries on in his job at the bank, where even a promotion cannot seem to lift the emptiness that permeates his life.
His emotional journey begins to unfold when Nolan encounters a troubled young man. Nolan finds himself forced, for the first time, to confront the loneliness of his longtime marriage. While bravely risking every relationship in his life, Nolan opens himself to an incredible opportunity where desire might find its way back into his heart."
Inception said it plans to screen the movie at the American Film Market in Santa Monica next week.
Williams hanged himself at his home Aug. 11 after years of battling depression. He was 63.
The Oscar-winning actor will be seen in the dark comedy A Merry Friggin' Christmas next month and in the family fantasy flick Night at the Museum: Secret of the Tomb in December.
The 39-year-old actress was spotted in a honey blonde wig as she shot scenes with husband Brad Pitt on Wednesday. The 50-year-old actor wore a fedora, white button down shirt and chinos, and was seen embracing Jolie for the camera.
By the Sea marks the couple's first on-screen collaboration since Mr. & Mrs. Smith (2005), and Jolie is also on board as writer and director.
Angelina Jolie Goes Bombshell Blonde While Filming First Scenes With Brad Pitt Since 2005. pic.twitter.com/mYax1FPjU5— CELEBRITY NEWS (@Celebritnewsnr1) October 30, 2014
Angelina Jolie & Brad Pitt film scenes for By The Sea, in Malta pic.twitter.com/rC5hLvwUDp— Millhouse (@damnangelina) October 30, 2014
By the Sea is set in 1970s France, and stars Jolie and Pitt as married couple Vanessa and Roland. The couple deal with their marital issues as they travel the country, and also establish relationships with the town locals.
Jolie and Pitt have been together since 2005, and married in August 2014. The couple have six children together, whose ages range from six to 13. Jolie last appeared in Disney movie Maleficent, while Pitt recently starred in WWII film Fury.