Will Smith acknowledges that Oscar slap was wrong

Will Smith has acknowledged that his reaction to Chris Rock's joke about his wife was wrong.

The actor slapped Rock on stage at the Academy Awards in March, after the comic made a joke about Smith's wife.

On Friday, Smith released a video reflecting on the slap - the first time he has been seen discussing it - in which he reiterated his apology.

"Chris, I apologies to you. My behaviour was unacceptable," he said.