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"

: The date the video was saved or sent (August 29, 2017). WA : Short for WhatsApp. VID-20170829-WA0027.mp4

According to technical community discussions on Forensic Focus , the name follows this specific logic: : Indicates the file is a video. : A sequential number indicating it was the