Many online horror series or "Alternative Reality Games" use clinical, file-based titles (e.g., vid_001.mp4 ) to create a sense of found-footage realism.
While "vid_978.mp4" sounds like a specific viral mystery or a legendary piece of lost media, it doesn't currently correspond to a single, widely known cultural phenomenon. Instead, it follows a common naming convention for often associated with: vid_978.mp4
Platforms like TikTok often feature users posting "mysterious" clips with generic names to spark curiosity and drive engagement. Many online horror series or "Alternative Reality Games"