To play MKV movies with dual audio, you'll need a media player that supports the MKV format and can switch between audio tracks. Some popular media players for this purpose include:

MKV is an open-source, free multimedia container format. Unlike older formats (AVI, MP4), MKV can hold an unlimited number of video, audio, picture, or subtitle tracks in one file.

Start small. Download a 720p x265 MKV dual audio movie (approx 1.5GB) and open it in VLC Player. Click Audio > Audio Track > Hindi . You will never go back to watching separate files again.

Having the file is half the battle. You need the right software to switch between audio tracks seamlessly.