• Resolution: 720p (HD Ready standard, typically 1280x528 or 1280x720 depending on aspect ratio).
• Quality: High Definition (HD).

AAC 5.1:

: This version uses the Advanced Audio Coding (AAC) format for its 5.1 surround sound. Immersive Experience -CM- Armageddon -1998- BluRay 720p AAC 5.1-Naun...

-CM-: This could indicate the release group or community that provided the rip. In torrent and P2P cultures, release groups are often identified by such acronyms or abbreviations. The text provided, "-CM- Armageddon -1998- BluRay 720p