A method of selecting a moving object in a video stream and activating an object-specific action in a video displaying system, the method comprising: acquiring images of a video stream by a PTZ camera arranged to be controlled by a joystick for pan, tilt, or zoom action, obtaining (S301, S401), based on image analysis of the acquired images, a plurality of values of a movement characteristic of a plurality of moving objects, each value of the movement characteristic representing a moving object detected in the acquired images, receiving (S302, S402) an input signal from the joystick, wherein the input signal represents a value of the movement characteristic of the joystick, selecting the moving object that has a movement characteristic which is most similar to the corresponding movement characteristic of the joystick by comparing (S303, S403) the value of the movement characteristic of the joystick with the value of the movement characteristics of each one of the moving objects, and determining the moving object having a value of movement characteristic closest to the value of movement characteristic of the joystick as a selected moving object, activating (S304, S404) an object-specific action for the selected moving object, obtaining position data for the moving objects, including the selected moving object, wherein the position data indicate a position of each moving object in relation to a position of the selected moving object in the acquired images or in further acquired images, receiving a further input signal, wherein the further input signal represents a value of a further user input device movement direction, based on the position data, determine a new selected moving object as the moving object being positioned in a direction from the selected moving object that is closest to the value of the further user input device movement direction, and activating the object-specific action for the new selected moving object. acquiring images of a video stream by a PTZ camera arranged to be controlled by a joystick for pan, tilt, or zoom action, obtaining (S301, S401), based on image analysis of the acquired images, a plurality of values of a movement characteristic of a plurality of moving objects, each value of the movement characteristic representing a moving object detected in the acquired images, receiving (S302, S402) an input signal from the joystick, wherein the input signal represents a value of the movement characteristic of the joystick, selecting the moving object that has a movement characteristic which is most similar to the corresponding movement characteristic of the joystick by comparing (S303, S403) the value of the movement characteristic of the joystick with the value of the movement characteristics of each one of the moving objects, and determining the moving object having a value of movement characteristic closest to the value of movement characteristic of the joystick as a selected moving object, activating (S304, S404) an object-specific action for the selected moving object, obtaining position data for the moving objects, including the selected moving object, wherein the position data indicate a position of each moving object in relation to a position of the selected moving object in the acquired images or in further acquired images, receiving a further input signal, wherein the further input signal represents a value of a further user input device movement direction, based on the position data, determine a new selected moving object as the moving object being positioned in a direction from the selected moving object that is closest to the value of the further user input device movement direction, and activating the object-specific action for the new selected moving object.