US Patent 7570665 Generation of mixed media streams

To achieve coordination during generation of a plurality of mixed media streams, there is suggested a method of generating a mixed media stream (62-64) from input media streams (40-50) having payload data elements and related identifiers. The method comprises the step (S12) of aligning the input media streams (40-50) according to a pre-specified relation between identifiers in different input media streams (40-50) before generating the mixed media stream.