A digital receiver that processes 3D video data having a receiving unit for receiving a first broadcast signal, including a first 3D service and first signaling data for the first 3D service, via a first channel, and a second broadcast signal, including a second 3D service related to the first 3D service and second signaling data for the second 3D service, via a second channel. The digital receiver further having a demultiplexer for demultiplexing 3D service data and signaling data from the first broadcast signal and second broadcast signal, respectively, a control unit for acquiring information on the channel for receiving the second broadcast signal on the basis of the demultiplexed first signaling data, a decoder for decoding each datum of the 3D service data, and a formatter for formatting each datum of the decoded 3D service data in accordance with an output format of the display screen.