Shia LaBeouf has no regrets over performance art stunt

Troubled actor Shia Labeouf has put his bizarre behaviour this year (14) down to an "existential crisis" but insists he has no regrets over his performance art stunt in Los Angeles as it was his way of "apologising to the public".

The Transformers star sparked fears for his health when he walked the red carpet at a film festival in Germany wearing a paper bag scrawled with the words 'I am not famous anymore' over his head.

He later set up an art project in L.A. inviting fans in to meet him for one-on-one sessions in which he would sit silently while wearing the bag.

LaBeouf has now explained the stunt was meant as an apology for his strange behaviour, and reveals he was genuinely touched by the public's positive reaction to him.

He tells TV host Ellen DeGeneres, "I went through like an existential crisis. Which turned into some kind of like exploration. I had some hiccups, some judgment error... (During the art piece)... We had a table with all these implements on like an Indiana Jones whip and pliers. It was sort of no rules.

"There was like a lot of negatively online and I thought alright, let's see what this negativity is about. Let's invite it in... I figured maybe someone will like pull my fingernails off... So I basically was sitting there with a bag on my head in this room... I was sitting there broken, I was really truly apologetic. I was kind of apologising to the public in a way and so I thought for sure people are going to come in and be super mean, that was what I was reading, but it wasn't that way at all.

"It was very human. Once they got in there everything changed. They stopped looking at me like an object and started looking at me like a human, and they were very loving... It was nice."

The interview on The Ellen DeGeneres Show airs on Friday (10Oct14).