According to technical community discussions on Forensic Focus , the name follows this specific logic: : Indicates the file is a video.
The filename is a standard system-generated name for a video received or sent via WhatsApp . VID-20170829-WA0027.mp4
: A sequential number indicating it was the 27th video processed by WhatsApp on that specific day. Tips for a "Proper Post" VID-20170829-WA0027.mp4
: If posting to a professional site, use a clear caption and relevant tags rather than leaving the filename in the description. VID-20170829-WA0027.mp4
: Give it a descriptive title (e.g., Beach_Trip_2017.mp4 ) to make it searchable and professional.