Method and apparatus for decoding/encoding a video signal

An apparatus for decoding a multi-view video data in a multi-view video stream, comprising:

• a nal parsing unit receiving the multiview video data stream including a random access picture including a random access slice, the random access slice referencing only slice corresponding to a same time and a different view of the random access picture, and obtaining initialization information of a reference picture list for the random access slice, the initialization information representing a reference relation for a single direction or a bi-direction between a plurality of views with view number information and view identification information, and obtaining type information indicating whether the random access slice is predicted for a single direction or a bi-direction;
• a decoded picture buffer unit initializing the reference picture list using the view number information and the view identification information according to the type information, and obtaining a difference value from the a multi-view video data stream according to the type information, the difference value representing a residual of inter-view reference index in the initialized reference picture list, and determining an assignment modification value for modifying the inter-view reference index in the initialized reference picture list according to the difference value, and modifying the initialized reference picture list for inter-view prediction using the determined assignment modification value;
• and
• an inter-prediction unit determining a prediction value of a macroblock in the random access picture based on the modified reference picture list, and
• decoding the macroblock using the prediction value,
• wherein the initialization information is obtained from an extension area of a sequence header.