The filename is a standard format used by WhatsApp to name video files saved on a device. Specifically, the name indicates the following: VID : Video file.
: If you saw this in a particular thread or article, it likely refers to a personal or local video shared within that specific community on that date. VID-20191030-WA0158mp4
: It sometimes appears in public directories or cloud storage links (like Google Drive or Dropbox) where users have backed up their media folders. The filename is a standard format used by
Do you have any about where you saw the post or what the video was about? : It sometimes appears in public directories or
: The date it was created or received (October 30, 2019). WA : The source is WhatsApp. 0158 : A unique sequence number for that day.
Because this is a generic system-generated name, it doesn't refer to one specific viral video. Thousands of different videos shared on that day would have been saved with this exact filename across different phones.
: You may have found it on a tech forum or a subreddit like r/whatsapp while someone was asking how to recover or identify an old file.