AAC 2.0 (Stereo) is standard for these file sizes to keep the weight down while maintaining clear dialogue. A Note on Safe Downloading
Leo lived in a part of the city where the internet was a luxury, not a utility. A 2GB file would take three days to download; a 300mb file? That was a twenty-minute gamble.
Contains two separate audio streams (e.g., English + Hindi) that you can toggle in players like VLC or MX Player.