Cam19.20170715 212052.avi -

: Indicates the recording start time in HHMMSS format (9:20:52 PM).

: Represents the recording date in YYYYMMDD format (July 15, 2017). Cam19.20170715 212052.avi

: Indicates the video was captured by the 19th camera in a multi-camera surveillance system. : Indicates the recording start time in HHMMSS