: This stands for Advanced Audio Coding. It's a type of audio compression algorithm used to encode the audio in the file. AAC is known for providing high-quality audio at bit rates lower than those required by earlier audio standards.

It looks like you’re aiming to write an article focused on a specific file naming convention for a movie download: “Sully (2016) - 1080p BluRay x265 HEVC 10bit AAC ...”

This uses High Efficiency Video Coding (HEVC), which offers significantly better data compression than the older H.264 standard. This allows for smaller file sizes without sacrificing the "beautiful and full looking image" noted by reviewers.