Interframe prediction encoding method, interframe prediction decoding method and equipment

The invention relates to an interframe prediction encoding method, an interframe prediction decoding method and equipment. The interframe prediction encoding method comprises the following steps of: taking a motion vector predicted value obtained according to the motion information of an encoded macro block as a center, and acquiring a reference area most matched with the content features of the current encoded macro block; dividing the current encoded macro block into sub-blocks according to the dividing mode of the reference area; dividing the reference area according to the content features; and performing motion estimation on the sub-blocks, and searching the optimized motion vector for interframe prediction encoding. By using stronger time relevance between a reference image and an encoded image, a reference area which is matched with the content features of the encoded macro block is found in the reference image, the dividing mode or code rate allocation mode of the encoded macro block is determined according to the content features of the reference area, and the accuracy of the macro block division is improved. Therefore, the prediction error is reduced, and the accuracy of the interframe estimation value of the macro block is improved.