Abstract: A video surveillance system comprises a plurality of video cameras (C1, C2, . . . , Ci) as well as a video signal switch (MUX), a means (SC) for controlling the video signal switch (MUX) and the video cameras (C1, C2, . . . , Ci) and a video signal recording means (VR). The video cameras (C1, C2, . . . , Ci) each comprise a pulse generating means (TC) for free-running generation of a sequence of horizontal and vertical synchronization pulses, and a means (SP) for combining the image and the sequence of horizontal and vertical synchronization pulses into a composite video signal. The pulse generating means (TC) assumes a predefined starting status on receiving an external reset pulse (R) and generates the sequence of the horizontal and vertical synchronization pulses commencing with the predefined starting status. The system controller (SC) comprises a clock generator (CLK, FD1, FD2) for generating a reset pulse for communicating it to the video cameras (C1, C2, . . . , Ci) in common.