Target motion vector selection method and device, electronic device and medium

The embodiment of the invention provides a target motion vector selection method and device, an electronic device and a medium. The method comprises the following steps of: for each prediction unit ina to-be-coded video, obtaining a target candidate motion vector corresponding to each prediction unit, sequentially obtaining the coding distortion cost of each target candidate motion vector; judging whether the coding distortion cost of the obtained target candidate motion vector is smaller than a first preset threshold value or not; and when it is judged that the coding distortion cost of theobtained first target candidate motion vector is smaller than a first preset threshold value, determining the first target candidate motion vector as a target motion vector, and stopping obtaining thecoding distortion cost of the next target candidate motion vector of the first target candidate motion vector. By applying the target motion vector selection method and device, the electronic deviceand the medium provided by t