The source of the video. This indicates the file was "ripped" from an official Blu-ray disc, ensuring the highest possible source quality compared to TV or DVD rips.
A "release group" tag. While TGL often stands for Tomorrow's Golf League in sports contexts, in file sharing, it identifies the specific team that encoded and uploaded this version of the film. Where to Watch desi boyz 2011 hindi bluray 720p x264 ac3 51 tgl
You get high-definition visuals at a fraction of the size of a full 40GB BluRay disc. The source of the video