"Who are you?" Kael asked, his voice cracking.
This stands for Dolby Digital 5.1. It means the file supports six-channel surround sound (center, left, right, left surround, right surround, and a low-frequency subwoofer), providing an immersive audio experience for home theaters.
: Stands for Dolby Digital 5.1, an audio technology that delivers six discrete channels of sound (left, center, right, left surround, right surround, and a low-frequency effects subwoofer channel).
- This part seems to describe the quality and type of the video:
