In the lexicon of media encoding, a is a file encoded directly from a retail Blu-ray disc. A BrRip , however, is encoded from a pre-existing, higher-resolution release (usually a 1080p BDRip master). This meant the encoder didn't need to physically rip the retail disc themselves; they instead compressed an already-ripped file down to a smaller size. 3. X264 (The Video Codec)