The filename is a generic name automatically generated by WhatsApp .
Because this name is specific to the person who originally saved or shared the file, there is no public "guide" or information available for it online. : Short for "Video." VID-20210822-WA0189mp4
: If the video is a clip from a movie, tutorial, or famous event, you can take a screenshot of a clear frame and use Google Lens to search for the original source. The filename is a generic name automatically generated
: The date the video was saved or sent (August 22, 2021). WA : Stands for "WhatsApp." or famous event