Vid-20211113-wa0077mp4 -

: Denotes that the media originated from or was processed by WhatsApp .

: In an Android file system, these files are typically found in the WhatsApp/Media/WhatsApp Video/ directory. If the file is in the Sent subfolder, it was a video you sent; otherwise, it was a received file.

: The file extension indicating the video is in the MPEG-4 format, which is fully supported for sharing on WhatsApp . Key Characteristics VID-20211113-WA0077mp4

The string is a standardized file name used by WhatsApp for video media sent or received on its platform. File Name Structure & Metadata

: Starting with the date (YYYYMMDD) ensures that files are automatically organized in chronological order when sorted alphabetically by name. : Denotes that the media originated from or

: While file names can be manually changed, these standard names are often used in digital forensics to suggest a video was shared via the app. WhatsApp media file naming convention - Forensic Focus

: A unique sequence number representing the 77th video file handled by WhatsApp on that specific day. : The file extension indicating the video is

: Indicates the date the video was sent or received via WhatsApp (November 13, 2021) in the YYYYMMDD format.