Dear Rushikesh,

You can take admission in Film and Television Institute of India with bachelor's degree in any course from a recognised institution. But it would be better if you get you bachelor's degree in applied arts, architecture, painting or any related fields in fine arts. 

However, the selection of course depends upon your area of interest. 

You can get more detailed information about the courses offered, fees etc in the official website of FTII mentioned below.

http://www.ftiindia.com/courses_main.html

Hope it helps.

Good Luck.