The 48-year-old National Award-winner, who is known for his films like "My Brother... Nikhil" and "I Am", said all his work till now has been mainstream.
"I've been wrongly slotted as an art-house director. I think I don't make art-house films. Neither 'My Brother... Nikhil' nor 'Sorry Bhai!' or 'Bas Ek Pal' are art-house.
"But somehow, because of the content, I have been bracketed as art-house. The way I use music, the narratives, all have been mainstream," Onir told reporters here.
The filmmaker, who was in the capital to promote his upcoming venture "Shab", said he lacks the skill to create art cinema.
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"Shab" is Onir's first script that he wrote in 2000 when he served as an editor on Kalpana Lajmi's "Daman" but it took him 17 long years to bring his maiden project onscreen.
He added that he originally wanted to cast Raveena Tandon and Sanjay Suri in the film.
"I wrote the script in 2000, I met Sanjay and Raveena for the first time on the sets of 'Daman'. I had a lot of ideas and Sanjay encouraged me to write the script. It took so much time. I ended up making other films but 'Shab' was not happening.
"Shab" has been chosen to open the Westpac Indian Film Festival in Sydney on July 18 and close the Indian Film Festival Melbourne on July 22.
"It is difficult to get theatres with the right timings and reach out to the public at the same time. It's way beyond the control of independent filmmakers," he said.
Also featuring debutant Ashish Bisht, Bengali actress Arpita Chatterjee and French actor Simon Frenay, "Shab" releases this Friday.