Chennai Express - 720p - Dvdscr - X264 - 5.1 St...

The specific keywords often found in file descriptions for this movie refer to technical release specifications:

Despite the risks, these searches remain popular for three reasons: Chennai Express - 720p - DVDScr - x264 - 5.1 St...

The title of the 2013 Bollywood blockbuster starring Shah Rukh Khan and Deepika Padukone. The specific keywords often found in file descriptions

This is the "source." A screener is a version of a movie sent to critics, awards voters, or theater owners before the official home video release. They often contain watermarks (like "Property of...") or periodic black-and-white scenes to discourage piracy. Chennai Express - 720p - DVDScr - x264 - 5.1 St...