Advanced Audio Coding is a high-efficiency format that provides better sound quality than MP3 at similar bitrates.
This indicates the video was captured from a Netflix stream (NF) and encoded into a smaller file size (HDRip).
If the file contains multiple languages, you can switch between them in your player's "Audio" menu.
If subtitles are included, they are often "soft" (selectable) rather than burned into the video, allowing you to toggle them on or off.
This is standard definition, suitable for viewing on smaller screens or mobile devices without consuming high bandwidth.