Method and device using inter prediction information

A video encoding method, comprising:

• deriving inter prediction information for a target block;
• and
• generating an indicator indicating a method to derive the inter prediction information,
• a list comprising a plurality of candidates is configured for the target block, and a prediction is performed using the list for a decoding for the target block using the indicator,
• the plurality of the candidates are generated by adding prediction information of a plurality of neighbor blocks which are adjacent to the target block to the list according to a specific order,
• according to the specific order, prediction information of an above neighbor block is added to the list first, prediction information of a left neighbor block is added to the list second,
• the above neighbor block is a right-most block among blocks which are adjacent to an upper side of the target block, and
• the left neighbor block is a lower-most block among blocks which are adjacent to a left side of the target block.

A computer-readable medium storing a bitstream, the bitstream comprising:

• encoded information for a target block;
• wherein a decoding for the target block is performed using the encoded information,
• inter prediction information for the target block is derived,
• a prediction for the target block is performed using the inter prediction information,
• a list comprising a plurality of candidates is configured for the target block,
• the prediction is performed using the list,
• the plurality of the candidates are generated by adding prediction information of a plurality of neighbor blocks which are adjacent to the target block to the list according to a specific order,
• according to the specific order, prediction information of an above neighbor block is added to the list first, prediction information of a left neighbor block is added to the list second,
• the above neighbor block is a right-most block among blocks which are adjacent to an upper side of the target block, and
• the left neighbor block is a lower-most block among blocks which are adjacent to a left side of the target block.