运动补偿是一种描述相邻帧（相邻在这里表示在编码关系上相邻，在播放顺序上两帧未必相邻）差别的方法，具体来说是描述前面一帧（相邻在这里表示在编码关系上的前面，在播放顺序上未必在当前帧前面）的每个小块怎样移动到当前帧中的某个位置去。这种方法经常被视频压缩/视频编解码器用来减少视频序列中的空域冗余-The motion compensation is a descr iption of the adjacent frame (adjacent represented here on the coding relationship adjacent two, on the playback sequence not necessarily adjacent) difference method, specifically the one described earlier (adjacent said herein the coding relationship in front of, on the playback sequence not necessarily how each small block in the current frame the front) to move to a location in the current frame to go. Such methods are often video compression/video codec used to reduce the redundancy of the airspace in the video sequence