In many commercial surveillance systems, files are automatically named based on a combination of the and the timestamp .
A file named 23420.mp4 might be the only surviving evidence from a remote server after a hardware failure. It could represent "Camera 23" at "4:20 AM." In digital folklore circles, these types of filenames are often used as placeholders for "found footage" stories where the video depicts something unexplained in an empty warehouse or a deserted hallway. 2. The CDN or Database Asset 23420mp4
Providing a bit more context about where you saw the name can help me track down the exact story. In many commercial surveillance systems