While common in CCTV, unusual filenames in system directories can sometimes be associated with data exfiltration (e.g., malware moving stolen media to a hidden folder).
Even if the filename is generic, the internal "atoms" (metadata blocks) contain the actual creation date, time, and camera bitrate. S0079 mp4
If you are investigating this file for security or technical reasons, note that: While common in CCTV, unusual filenames in system
In professional security environments, files are often saved using a structured naming convention like S[XXXX].mp4 . While common in CCTV
The "S" often represents a recording session or a specific storage sector on a Digital Video Recorder (DVR).