Participant countries include Iran, Canada, China, Japan, Sweden, Germany, Russia, the United States, and India.
The organizers of renamed Patna International Film Festival (PIFF) launched a pre-festival campaign on March 22, 2015, in several districts of Bihar.
Documentaries and short films were shown from altogether seven countries, including Sri Lanka, Australia, Indonesia, Japan, China, Nepal, and Malaysia.
Sri Lanka was granted a special guest status with a festival country (utsav desh) tag.
Guest film makers in PIFF : Vimukte Jay sundare from Sri Lanka, Dhanushka from Sri Lanka, Bijaya Jena, Sanjivan Lal, Karan Baali, Shubhadra Chaudhary, Sudhir Palsane, Dilip Patnayak, Joshi Joshef, Kapilash Bhuinyan and Susant Misra.
Guest film personalities included Seema Kapoor, Lenin Rajendran, Uthara Unni, Pawan Malhotra, Sandeep Sawant, Paresh Mokashi, Nandu Madhav, Sabyasachi Mohapatra, Atal Bihari Panda, Susant Misra, Dilip Patnayak, Ramkumar Singh and Gajendra Sarotriya.