You lose the dynamic range. When Munni (Harshaali Malhotra) cries, it should pierce your soul. When the muezzin's call overlaps with the temple bells, it should create chills. In a 480p rip, those audio layers sound flat and tinny.
Since the protagonist's companion is mute, the film relies heavily on visual cues, facial expressions, and the sweeping landscapes of the Indo-Pak border to convey its message. Music as a Bridge: 480p Bajrangi Bhaijaan -2015- BluRay Hin.mkv