Telecommunications Network and Method An apparatus (201) comprises an interface (205) for receiving a data stream (203), for example a digital media data stream such as MPEG2-TS. The data stream (203) comprises a set of component parts (for example video, audio, subtitle), wherein one or more of the component parts further comprises a set of sub-component parts (for example a plurality of video, audio or subtitle sub-component parts, respectively). A filter unit (213) is adapted to filter the received data stream, such that a set of sub-component parts associated with a particular component part is filtered into a first sub-component part (221) and a second sub-component part (222), wherein the first sub-component part (221) is output to a first device (for example a TV, not shown), and the second sub-component part (222) is output to a second device (for example a tablet device, not shown).