Encoding/decoding method and apparatus for motion vector information

A decoding method for motion vector information, comprising:

• acquiring, from a bitstream, motion vector resolution information and motion vector difference information for a current block;
• determining a motion vector prediction and a motion vector resolution according to the motion vector resolution information, based on a correspondence between motion vector resolutions in a MVR list and a history-based motion vector prediction list;
• determining a motion vector difference based on the motion vector difference information and the motion vector resolution;
• and
• determining motion vector information based on the motion vector prediction and the motion vector prediction.

A method for binarizing motion vector information, comprising:

• classifying candidate motion information lists into a plurality of categories;
• binarizing an index of each of the categories using a first binarization method, and binarizing an index of current motion information in a candidate motion information list category into which the current motion information is classified, by using a second binarization method;
• and
• writing binarization information derived by the first and second binarization methods into a bitstream.