Vid-20201219-wa0370mp4 -

: The filename appeared in a system error log or a transfer history. How to identify the content

Since the filename itself contains no descriptive data about the video's content (such as "Birthday Party" or "News Report"), the only way to know what the "topic" is would be to: VID-20201219-WA0370mp4

: Right-click the file and select "Properties" (Windows) or "Get Info" (Mac) to see the file size and exact creation time, which might help you remember the context. : The filename appeared in a system error

: You found this file in your phone’s storage or a cloud backup and are trying to identify what it contains. : A sequential serial number assigned by the

: A sequential serial number assigned by the app to distinguish it from other videos saved on that same day. .mp4 : The digital container format used for the video. Why you might be seeing this