According to an embodiment of the present Invention, an apparatus includes an audio video contents receiver configured to receive signals and information, a digital signal processor configured to perform demodulating, demultiplexing and decoding of digital video and audio data, and to provide output data, a storage configured to receive and temporarily store the output data from the digital signal processor, a format converter configured to receive the output data from the storage, to perform protocol conversion on the output data, and to provide format-converted output data, and a signal outputter configured to receive the format-converted output data from the format converter, and to control an encoding rate and a transmission rate of the format-converted output data to be outputted to a mobile device that is compatible with a mobile telecommunications network.