Method and apparatus for processing a broadcast signal for 3D broadcast service

An apparatus for receiving a broadcast signal for 3D (3-Dimensional) broadcast service, the apparatus comprising:

• a receiving unit receiving the broadcast signal including a 2D video stream including a 2D video frame, depth information and signaling information;
• a system information processor parsing a 3D service location descriptor including codec type information specifying encoding type of information included in the broadcast signal from the signaling information, wherein the depth information includes depth of a 3D image relative to a plane of a display;
• a first decoder decoding the 2D video stream;
• a second decoder decoding the depth information based on the codec type information;
• and
• a formatter rendering the 2D video frame into a 3D video frame based on the depth information,
• wherein the 3D service location descriptor includes resolution information indicating whether a resolution of a 3D video frame is same as a resolution of the 2D video frame.