VIDEO DECODING DEVICE, VIDEO DECODING METHOD, VIDEO DECODING PROGRAM, RECEIVING DEVICE, RECEIVING METHOD, AND RECEIVING PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a video decoding technique for improving encoding efficiency by providing a plurality of motion information candidates when motion information is not transmitted to reduce the code amount of the motion information.SOLUTION: In a merge mode determination unit of a motion information generation unit, a merge motion information candidate list construction unit 162 generates a merge motion information candidate list using a spatial merge motion information candidate and a temporal merge motion information candidate. A second merge motion information candidate replenishment unit 165 generates a new merge motion information candidate that, when a reference index indicates an available reference picture, includes the reference index, and when the reference index does not indicate the available reference picture, includes a predetermined reference index, together with a motion vector having a preset size and direction, and adds it to the merge motion information candidate list. A merge motion information selection unit selects one merge motion information candidate from the merge motion information candidate list, and derives the selected one merge motion information candidate as motion information of a prediction block to be decoded on the basis of a decoded specific index.SELECTED DRAWING: Figure 13