25. The video decoding device of claim 17 , comprising at least one of: an integrated circuit; a microprocessor; or a wireless communication device.
17. A video decoding device comprising: a data storage medium configured to store decoded reference pictures; and one or more processors configured to: generate a motion vector (MV) candidate list for a prediction unit (PU) of a coding unit (CU) in a B slice; after generating the MV candidate list, determine a selected MV candidate in the MV candidate list; after determining the selected MV candidate, convert the selected MV candidate from a bi-directional MV candidate into a uni-directional MV candidate; after converting the selected MV candidate into the uni-directional MV candidate, assign the uni-directional MV candidate to the PU; generate a predictive video block for the PU based at least in part on one or more reference blocks of the decoded reference pictures, the one or more reference blocks indicated by motion information specified by the selected MV candidate; use the uni-directional MV candidate assigned to the PU for merge candidate list construction or advanced motion vector prediction (AMVP) candidate list construction for a next block in coding order; and output decoded video data based at least in part on the predictive video block.