| 摘要 |
A moving picture decoding method including a prediction mode, including: in said prediction mode, in which prediction mode motion vector information of a current block in a current frame is not transmitted from an encoding side: selecting, from among multiple candidate reference frames, a frame(s) to be referenced to in the prediction mode; determining motion vector information to be used in the prediction mode; and performing prediction processing using the selected reference frame and the determined motion vector, wherein-when candidate blocks within a current frame and adjacent to a current block include blocks that use forward reference frames, a forward reference frame having a smallest index number is selected as the forward reference frame for the current block from the forward reference frames that said blocks using the forward reference frames have, wherein determining motion vector information to be used for the current block in the prediction mode, based on availability of motion vector(s) of predetermined adjacent blocks and the current block belonging to the current picture and the predetermined adjacent blocks are decoded earlier than the current block.
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