This refers to the audio codec ( Advanced Audio Coding ). It is a standard compression format that provides high-quality sound while keeping the file size manageable.
To understand what this file is, we have to decode the standard naming convention used by online release groups: eks2024720pwebdlaacx264katmovie18com mkv hot
This indicates the video resolution. 720p (1280 x 720 pixels) is considered "High Definition," offering a clear picture without the massive file size of 4K or 1080p. This refers to the audio codec ( Advanced Audio Coding )