MERGE WITH MOTION VECTOR DIFFERENCE IN VIDEO PROCESSING

摘要

A method of video processing, comprising: determining to signal multiple motion vector differences in an ultimate motion vector expression (UMVE) coding tool for a conversion between a current video block of a video and a coded representation of the video; and performing the conversion based on the determining, wherein, using the UMVE coding tool, a motion vector expression that includes a starting point, N motion vector differences represented by N motion magnitudes and N motion directions of the current video block is used during the conversion, N being an integer equal to or greater than two.