This is the more technical part of the keyword. In the piracy scene, "quality" tags are standardized. You have (recorded in a cinema), HDTS (HD video with poor audio), WEB-DL (direct download from streaming services), and BluRay (highest quality from physical discs).
To stay online despite government bans, the site constantly switches its domain extensions tamilrockers a to z movies extra quality
If you are looking for a review of the SonyLIV original series that dramatizes the search for the real-life piracy group, opinions are mixed: This is the more technical part of the keyword