Method and apparatus for trasmitting video datastream for providing digital broadcasting service with subtitling service, method and apparatus for receiving video datastream providing digital broadcasting service with subtitling service

PURPOSE: A method and apparatus for transmitting a video data stream for providing a digital broadcasting service including a subtitle service and a method and apparatus for receiving a video data stream for providing a digital broadcasting service including a subtitle service are provided to transmit and receive basic timing subtitle data and additional timing subtitle. CONSTITUTION: A video data stream transmitting apparatus generates a subtitle stream including basic timing subtitle data and additional timing subtitle data(1010). A 3D subtitle reproduction information is determined for constructing a 3D subtitle(1020). A video stream including video data, the subtitle stream, and a PMT(Program Map Table) section is multiplexed and a TS(Transport Stream) packet is outputted(1030).