A scalable multiviewer system comprises at least one communication module. The at least one communication module comprises at least one input being associated with at least one data source. The at least one communication module comprises at least one output being associated with at least one data sink. The at least one communication module comprises at least one channel interface for an inter-module communication channel configured to transfer data between the at least one communication module and at least one further communication module. The at least one communication module comprises a processor configured to receive an input signal from the at least one input, to downscale the input signal based on at least one preset communication parameter, and to selectively transmit the downscaled input signal to either the output or to the channel interface for the inter-module communication channel based on the at least one preset communication parameter.