38495-60 601531470826_sub_f_1532160055.mp4 May 2026

: 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. 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 : This usually stands for " Sub-stream " or " Sub-file