Chennai-based writer/director Hari Viswanath began his film journey in 2012 with the Tamil-language short “Idukkan (Sufferings)” that premiered at Cannes and won best short at the Norway Tamil Film Festival. His follow up short “Pesum Virus (Talking Virus),” again in Tamil, also played at Cannes’ Short Film Corner. His feature debut “Radiopetti (Radio Set),” also...