MUMBAI: Karan Johar, Zoya Akhtar, Anurag Kashyap and Dibakar Banerjee have got together to make an 80-minute documentary on Bollywood to mark 100 years of Indian cinema.

The makers will make their own films separately under the banner of Flying Turtle Films that will then be clubbed together, it is understood.

Confirming her involvement, Akhtar said that she was involved in the project, "Yes, I am making a film on 100 years of Indian cinema. It‘s not a documentary film but a fiction. Since it‘s not from my production house, I cannot talk more about it."

Akhtar’s film will narrate the story of a young boy and his obsession with the song Sheila Ki Jawaani.

Kashyap‘s already launched film is still untitled. Priyanka Chopra has confirmed she would be playing a key role in the film. Karan Johar and Dibakar Banerjee are yet to start work on their respective films.

2012 marks the 100th year of Indian cinema. The first Indian feature film, Raja Harishchandra, was made by Dadasaheb Phalke and released a 100 years ago on April 1913.