If you don't want to create a new file, you can load the audio track while watching the movie using players like .
To "install" the audio so it stays with the movie file forever, use a tool called . iron man hindi audio track install
Sync and lip-sync fixes
To combine the audio and video into a single file permanently without losing quality, use MKVToolNix If you don't want to create a new
Launch . You will see a screen titled "Multiplexer." iron man hindi audio track install