: Modern compression formats; x265 (HEVC) allows for high video quality at smaller file sizes, while AAC is the standard audio codec.

: The dangers of social media, digital footprints, and the "ghosts" created by our online actions.

: Indicates the version contains footage not shown in the theatrical release due to content intensity.

: Short for "Behind the Scenes" (referring to bonus footage) or, more likely in this context, a tag from a specific release group.

There is also a popular titled Ex-girlfriend released in 2021 on the Headfone App . It follows a similar theme of a college romance where a jilted lover refuses to move on and takes matters into his own hands.

: Several years after a young man posted a provocative photo of his ex-girlfriend in a private chat to brag to friends, he is now happily engaged. However, his past returns to terrorize him when mysterious messages and supernatural events linked to his ex begin to threaten his new life and his fiancée.

The specific file name you mentioned uses common scene-release terminology: