Because this is a generic filename for a private media file, there is no public "detailed post" or specific content associated with it online. It is a private file likely stored on a specific phone or cloud backup from that date.
: A unique serial or timestamp number assigned by the app for that day. VID-20150419-WA0140.mp4
: Shows the date the video was saved or created ( April 19, 2015 ). WA : Stands for WhatsApp. Because this is a generic filename for a