Because it is "Dual" and "MSub," you can switch between languages and subtitles during playback:
If you are trying to play this on a Windows PC using default apps and hear audio but see no video, you may need to install the HEVC Video Extensions from the Microsoft Store or use a free alternative like the K-Lite Codec Pack . Multi-Version Movies - Plex Support Because it is "Dual" and "MSub," you can
This means the file contains Dual Audio tracks, typically the original language plus a dubbed version (e.g., Hindi + English). Because it is "Dual" and "MSub