Video encoding apparatus and video decoding apparatus

A video decoding apparatus for subjecting a video image to motion compensated prediction decoding, the apparatus comprising:

• an acquisition module to obtain available blocks being blocks having motion vectors and number of the available blocks from decoded blocks adjacent to a to-be-decoded block;
• a selection information decoding module to select one selection code table from a plurality of code tables depending on the number of the available blocks and decode selection information for specifying the selection block using a code table corresponding to the number of the available blocks;
• a selection module to select one selection block from the available blocks according to the selection information;
• and
• a video decoding module to subject the to-be-decoded block to motion compensated prediction decoding using a motion vector of the selection block.