Use this method to create a single movie file (MKV) that includes both the original and Hindi dubbed audio tracks. Install MKVToolNix : Download and install the MKVToolNix Import Files

: Look for files labeled as Hindi or AC3/DTS 5.1 for the best experience.

You can set the Hindi track as the "Default track" so it plays automatically. Start Merging Start multiplexing

To watch movies with a Hindi dubbed audio track, you typically need to download the external audio file and "install" it by synchronizing it with your video file using a media player like VLC or MX Player.

For a permanent solution without re-encoding, use MKVToolNix to "mux" (combine) the video and audio into a single .mkv file. Safe Sources and Tools