Aff59e1c7740deb0.mp4

: Where did you find the link or file? If it was a chat app, the filename is likely just the server's way of indexing that specific upload.

: You can right-click the file and select Properties (Windows) or Get Info (Mac) to see if there is any "Title" or "Author" metadata embedded in the file. aff59e1c7740deb0.mp4

: Some DVR systems name files based on a unique device ID or timestamp hash. Finding the Origin : Where did you find the link or file