Stands for Dolby Digital 5.1 surround sound, providing six channels of audio for a home theater experience.
The "tag" or signature of the release group or individual (K83) who encoded and uploaded the file to the internet. Beast.2022.PL.720p.BDRip.XviD.DD5.1-K83.avi
The file extension (Audio Video Interleave), a legacy multimedia container format. Stands for Dolby Digital 5
To break down the technical specifications contained in the name: starring Idris Elba.
The filename refers to a specific digital release of the 2022 survival thriller film Beast , starring Idris Elba.