The file format (Matroska Video). This container is popular because it can hold multiple audio tracks, subtitle streams, and high-quality video in a single file. How the File "Works"
Software like VLC Media Player or MPC-HC is recommended. These players can easily toggle between the Hindi and English audio tracks. se7en1995720phindienglishmkv work
However, this is technically complex and still exists in a legal gray area. The simplest, safest path: and switch audio tracks on the fly. The file format (Matroska Video)