: Often used in legal or news contexts to identify a specific piece of amateur footage (e.g., news reports from Patrika or The Quint frequently list WA-formatted files in their media archives).

: The date the file was saved to the device (September 13, 2021). WA : Short for WhatsApp.

: A unique sequence number assigned by the app for that specific day. Context and Origin

: Sometimes specific "scare" or "prank" videos are circulated with their original WhatsApp filenames intact.

If you saw this filename mentioned in a social media post or news article, it usually refers to:

The filename is a standard format used by WhatsApp for videos saved or shared on its platform. The name breaks down as follows: VID : Indicates the file is a video.