While it is not a widely known "standard" file (like a system driver), it is most likely associated with one of the following: 🎠Performance Art or Monologue
It could be a contemporary performance piece designed to be viewed as a "leaked" or "archived" Skype call. The portion of the filename is not a standard video extension (the file itself is a .mov ), but might stand for: National Theatre Board (or a similar arts organization) Skype copy.nhb.mov
Record and play back a Skype for Business meeting - Microsoft Support While it is not a widely known "standard"
In indie and underground music scenes, artists often record sessions or video clips over Skype to capture a lo-fi aesthetic. Standard Skype recordings are typically saved as MP4
The term "piece" might refer to a or a visual art piece .
Standard Skype recordings are typically saved as MP4 files , so a file suggests it was exported or recorded using third-party screen recording software like AnyMP4 or Movavi .