Because this is a specific, private file identifier rather than a recognized public document, it is likely: A shared between contacts. A file stored in a private cloud or local storage.
This filename follows a standard format often used for video files shared via (indicated by "WA" followed by a number), likely created on October 21, 2021 ("20211021"). VID-20211021-WA0049mp4
did you see this filename (e.g., a specific website, email, or social media post)? What is the content of the video? Is there a link to a blog post associated with it? AI responses may include mistakes. Learn more Because this is a specific, private file identifier