: This usually stands for " Sub-stream " or " Sub-file ." In surveillance, a "Sub-stream" is a lower-resolution version of a video (e.g., VGA or 720p ) used for remote viewing or mobile playback to save bandwidth, while the "Main-stream" records in Full HD or 4K .
: This is a Unix Timestamp . It represents the number of seconds that have elapsed since January 1, 1970.
: Often a camera ID, site code, or serial number used by professional NVR (Network Video Recorder) systems. 38495-60 601531470826_Sub_f_1532160055.mp4
: The most common video container format , typically using the H.264 codec to balance quality and storage. How to View This Content
: If this was found in a cloud backup (like Google Photos or iCloud), the "Sub" prefix might indicate it is a low-quality preview generated by the service while the full file is processing. : This usually stands for " Sub-stream " or " Sub-file
: The VLC official site offers a player that can handle almost any codec.
: Likely a unique database ID or a long-form timestamp. : Often a camera ID, site code, or
: 1532160055 translates to Saturday, July 21, 2018, 08:00:55 AM (UTC) .