Veteran film actor and director Clint Eastwood has said that he may return to acting at some stage in the future.

The 86-year-old Hollywood legend has spent more time behind the camera in recent years and last appeared on the big screen in Trouble With the Curve in 2012, his first film in four years.

But speaking at the Cannes Film Festival, Eastwood said he would revisit acting "some day".

The Oscar-winner gave a talk at the glamorous event and there were several screenings of his films, including one marking the 25th anniversary of his award-winning Western, Unforgiven.

Eastwood is currently preparing to direct The 15:17 To Paris, about the 2015 Islamic State attack on a train, which was foiled by three Americans.

He said the film suited today's "strange times".

As for the process of making movies he said: "If you have good luck with your instincts, you might as well trust them.

"It's an emotional art form. It's not an intellectual art form at all."

Scott and Clint Eastwood