The Mumbai Film Festival has the parts that its organisers need to make the show a big deal on the international film circuit: appearances by world-class directors such as Costa-Gavras and Oliver Stone, screenings of films like “The Social Network” and “The Fifth Estate,” and the backdrop of a city that is home to the world’s largest movie production business. And yet, it isn’t enough. Festival director Srinivasan Narayanan spoke to Reuters about his roadmap for the festival and the hurdles in his path.