The techniques described here allows the MPEG compression standard to be used in a consistent and efficient manner throughout the broadcast chain. By using a so-called "MOLE" which is buried within the decoded programme material, it is possible to concatenate (i.e. cascade) many MPEG encoders and decoders throughout the broadcast chain - without any loss of audio or video quality. The described technique have been developed in the ATLANTIC Project [1] which is a European Collaborative project within the ACTS framework.