Method and apparatus for decoding/encoding a video signal

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

• a parsing unit receiving the multi-view video stream, the multi-view video stream including a random access picture, the random access picture including a random access slice, the random access slice referencing only a slice corresponding to a same time and a different view of the random access picture, and obtaining initialization information of an inter-view reference picture list for the random access slice, the initialization information representing a reference relation between a plurality of views, the initialization information including view number information and view identification information, the view number information indicating a number of reference views of the random access picture, and the view identification information providing a view identifier of each reference view for the random access picture;
• a decoded picture buffer unit initializing the inter-view reference picture list for inter-view prediction, the initializing including assigning an inter-view reference index to an inter-view reference picture and appending the inter-view reference picture to an initialized temporal reference picture list for temporal prediction, the inter-view reference index being appended based on the view number information and the view identification information, and obtaining modification information for the initialized inter-view reference picture list from a multi-view video stream, the modification information indicating that the inter-view reference picture in the initialized inter-view reference picture list is to be reordered, and determining an assignment modification value according to the modification information, the assignment modification value specifying an inter-view reference index of an inter-view reference picture to be reordered, and modifying the initialized inter-view reference picture list, the modifying including selecting the inter-view reference picture having the inter-view reference index equal to the determined assignment modification value and reordering the inter-view reference picture by changing the inter-view reference index of the selected inter-view reference picture;
• 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.