One Direction movie has lovely emotional moments: Morgan Spurlock

Hollywood director Morgan Spurlock, currently shooting "One Direction: This Is Us", says the film following the lives of One Direction band members while on tour will have some "emotional moments" and fans "may shed a tear" while watching it.

"There have been some really lovely emotional moments that we've captured, I think fans may shed a tear or two while watching them," Spurlock said Wednesday afternoon during an interaction on Twitter.

"We spend a lot of down time with the band, with their families and friends. We really wanted you to see what their 'normal' lives are like," added the director of well-known documentary "Super Size Me".

One Direction has five members - Niall Horan, Zayn Malik, Liam Payne, Harry Styles and Louis Tomlinson. They were discovered by Simon Cowell on Britains reality show "The X Factor" in 2010.

So far the musicians have churned out hits like "Up all night", "Take me home" and "Live while we're young".

Although simple, the film's title says it all in one go and director gives credit to the musicians for choosing an apt name.

"They came up with it themselves. They really wanted it to convey that it was them bringing you into their lives," he said.

Talking about his interest in the project, he said: "They are one of the biggest bands in the world and to capture the moment in time is an incredible opportunity ... and in 3D no less!," he said.

For the movie, the band members not only spend their time in front of the camera, but even ventured behind it.

"The lads have been both in front of and behind the camera. They've been filming each other on the tour bus and on day's off... great footage," he said.

However, they took a while to get used to the camera.

"Can be a little unnerving with a camera in your face all the time, but you build trust over time. Now I'm just like a piece of furniture," he said.

Set to release August 30, the film is being jointly produced by Simon Cowell, Adam Milano, Spurlock and Ben Winston and it is being distributed by Sony Pictures.

The band is eager to see Spurlock's final product.

"The band can't wait to see it. But we're all excited to see the finished film, aren't we," he said.

Spurlock has also made films like "Where In The World Is Osama Bin Laden?", "Freakonomics", and "The Greatest Movie Ever Sold".