: The file extension, confirming it is an MPEG-4 video file, which is a standard supported format for WhatsApp media. Context for "Paper"
: Stands for WhatsApp , the platform through which the media was shared. VID-20190324-WA0013mp4
: It could be a placeholder or example in a study regarding how students or educators share resources via messaging apps. : The file extension, confirming it is an
: A sequential serial number assigned by the app to distinguish between multiple media files received on that same day. : The file extension
: Represents the date the file was saved or received ( March 24, 2019 ).