A video system 1 for displaying image data. The system includes a server (2) having a coder device (5) which can be operated in a number of operating modes, and a client (3) connected to the server (2) via a network (4). The coder device (5) is configured to code video data (V) in accordance with an active operating mode and to output coded transmission data (U). The client (3) is connected to the server (2) via a network (4), and configured to request, to further process, and to display the coded transmission data (U) from the coder device (5). The coder device (5) operates in the active operating mode as determined by the client (3).