Set top box with transcoding capabilities

A media stream transcoding set top box including an RF input interface, an RF receiver configured to receive from the RF input interface an RF signal including an original digital media stream, and produce an input digital media stream based, at least in part, on the original digital media stream, the input digital media stream including one or more channels, the channels carrying at least one media stream, a decoder configured to receive the input digital media stream and extract therefrom an uncompressed media stream, a processor configured to process the uncompressed media stream, to produce a processed media stream, an encoder configured to compress the processed media stream, to produce a compressed processed digital media stream, and an output interface configured to output the compressed processed digital media stream in a format suitable for a client device. Related apparatus and methods are also described.