Partitioning of MPEG coded video bitstreams for wireless transmission

This paper introduces an efficient technique for dividing a preceded Moving Pictures Expert Group-2 (MPEG-2) bitstream into an arbitrary number of partitions in decreasing order of visual importance. For a fixed partition size ratio, this has been achieved by variable-length code (VLC) interleaving within a macroblock or group of macroblocks. The algorithm is capable of recreating a syntactically correct bitstream, regardless of the error rate on secondary partitions. This renders it applicable to many efficient transmission schemes, particularly over wireless channels.