1. A method for video decoding that supports a multi-view, comprising: constructing a merge motion candidate list by deriving a default merge motion candidate with respect to a current Prediction Unit (PU); deriving an extended merge motion candidate with respect to the current PU when the current PU is a depth map or a dependent view; and adding the extended merge motion candidate to the merge motion candidate list, wherein the extended merge motion candidate is added to the merge motion candidate list when the extended merge motion candidate is not the same as the default merge motion candidate within the merge motion candidate list.