Samantha Morton still feels "sad" about being replaced by Scarlett Johansson in 2013 movie Her.

The 49-year-old actress had recorded the part of artificial intelligence operating system Samantha for Spike Jonze's 2013 sci-fi film, only for the director to re-cast the role in post-production.

Johansson was hired to re-record the dialogue, and Morton still has feelings of disappointment about the motion picture.

Speaking to Josh Horowitz on his Happy Sad Confused podcast, she said: "I have to say that it's every director's prerogative in regard to the final cut of the film.

"For any job, you're never guaranteed to be in it in the end. But with that, I was surprised.

"A little sad would be an understatement."

Morton admits Johansson has a "beautiful voice", but The Odyssey star wishes she had been given the chance to record the part in an American accent.

Speaking about the star who replaced her, she said: "She's incredibly evocative. I got it, but I was sad.

"It does hurt when you're fired from something.

"What I would have wished for was another chance in a booth to do an American accent. But Scarlett Johansson - I mean, come on."

While shooting the movie, Morton had appeared alongside leading man Joaquin Phoenix in the motion picture, and she recalls it was "really special" working with the 51-year-old actor.

She said: "The time I had on set with Joaquin [Phoenix], working with Spike on the script and finding Samantha, and all the work that we did was really special.

"We did some mad stuff,' the 49-year-old continued.

"They designed and built a booth for me to record all my sound.

"I would be in this black, padded phone box, or I'd be in the trunk of a car. I think my version of Samantha was very different. She's English."

Amy Adams, Rooney Mara, Olivia Wilde, Chris Pratt, Bill Hader, and Kristen Wiig also starred in the movie.