VIDEO DECODING METHOD AND ENCODING METHOD, AND TERMINAL

摘要

A video decoding method and encoding method, and a terminal. The decoding method comprises: acquiring an initial candidate motion vector set of a current block under decoding; removing candidate motion vectors not complying with a preset condition from the initial candidate motion vector set, and forming a new candidate motion vector set by use of remaining candidate motion vectors in the initial candidate motion vector set; and performing decoding according to the new candidate motion vector set. In the embodiment of the present application, some motion vectors can be removed, according to the preset condition, from the candidate motion vector set. On the condition that the number of the candidate motion vectors is decreased, the amount of information of reconstructed pixels in a reference frame obtained according to each candidate motion vector is decreased accordingly. Meanwhile, these candidate motion vectors are adjacent to each other, and selected reference blocks overlap each other, so that the reference blocks can be reused. As a result, the frequency of memory reading is decreased, hardware design is simplified, and encoding/decoding performance is improved.