This indicates the inclusion of the Original (Org) official Hindi dubbed audio track commissioned by the studio, rather than a poorly mixed fan dub. The 5.1 signifies true surround sound, separating dialogue, background music, and action sequences across five speakers and one subwoofer.
To ensure you are actually hearing the 5.1 channel mix rather than standard stereo: narcos season 1 webdl hindi org 51 en new
Short for "Hindi Original." This specifies the official, studio-approved Hindi dubbed audio track commissioned by Netflix, rather than an unofficial, low-quality fan dub. This indicates the inclusion of the Original (Org)