For fans in India, having Hindi and English audio tracks togglable in one file is a major convenience. You get the original intensity of the actors' voices or the localized experience of a Hindi dub.
A "repack" usually refers to a version of the movie where the video has been optimized to remove errors or compressed more efficiently without losing quality. These versions are often "plug-and-play" ready for mobile devices, tablets, and smart TVs. How to Enjoy the Series undisputed 1 2 3 720p in dual audio hindi repack