Short for "Blu-ray Rip." This means the video was encoded from a pre-existing Blu-ray source, such as a 1080p or 720p BDRip, rather than directly from the retail disc.
The components of the filename provide a technical "spec sheet" for the video: The name and release year of the film. subtitle Warrior 2011 REPACK BRRip XviD AC3-SANTi
The name of the "Scene group" or team responsible for creating and releasing this specific file. About the Movie: Warrior (2011) Short for "Blu-ray Rip