The "480p BluRay 450MB" specification is a popular choice for several reasons:

Despite the lower resolution, a "BluRay rip" ensures that the source material was high-quality, resulting in better color accuracy and less compression noise than older DVD rips.

If you are looking for this specific file (often tagged with "Film Load ml" or similar encoder marks), you will typically find it in the container. MKV is favored because it easily supports multiple audio tracks and subtitle streams within a single, compressed file.

When playing Dual Audio MKV files on a PC, use VLC Media Player . You can quickly toggle between Hindi and English by pressing the 'B' key or navigating to the 'Audio' menu.