"It's a tremendous festival and a great platform connecting the Arab world to Indian cinema, " Karan said here.
The filmmaker was invited to the seventh edition of DIFF for a panel discussion on the prospect of business and cultural collaboration with various foreign film industries.
He said he would love a venture with Middle East directors, if he likes the subject.
"It's all content driven. If there is a subject that comes my way and demands that, why not?" Karan told after the panel discussion.
Asked if he would plot a love story with an Arab socio-cultural backdrop, he said: "Who knows...it depends on the screenplay."
Reliance Entertainment chairman Amit Khanna accompanied Karan Johar at the panel discussion. The festival, which started Sunday, will conclude Dec 19.