Positioning of images in a data stream

摘要: A method and mechanism for repositioning video images in a compressed data stream without requiring bit shifting. P frame image is to be repositioned from an original position alternate position. The analyzed (1102) determine whether the will result positions being changed with respect (1106). In response determining changed, modified by adding stuffing bits form of macroblock restore its positions. intra-coded (1114) non-intra coded. quantization matrix selected such that upon decode does not adversely affect final picture. Maintaining facilitates straightforward copy unmodified new frame.