Frames per second (FPS) refers to the number of images that a surveillance camera captures every second. The higher the FPS, the more detailed and smoother the video will appear, but this also increases the amount of data that needs to be stored. The higher the FPS, the more storage space is required to store the footage. For example, if a camera is set to record at 30 FPS, it will produce twice the amount of data than if it was set to record at 15 FPS.
However, the optimal FPS for a surveillance camera depends on the specific application and the level of detail required. In areas with high traffic, it may be necessary to capture footage at a higher FPS to ensure that every detail is captured, while in low traffic areas, lower FPS may be sufficient to capture the necessary information without overloading the storage capacity.