SVC-TO-AVC REWRITER WITH OPEN-LOOP STATISTAL MULTPLEXER

摘要

A method for processing a plurality of multilayer bit streams includes receiving a plurality of multilayer bit streams each having a base layer and at least one enhancement layer. One or more of the enhancement layers are extracted in whole or in part from at least one of the multilayer bit streams so that the plurality of multilayer bit streams are collectively reduced in their total bandwidth. Each of the multilayer bit streams are rewritten to a single layer bit stream. The single layer bit streams are multiplexed to form a multiplexed single layer bit stream.

主权项

1. A method for processing a plurality of multilayer bit streams, comprising:
receiving a plurality of scalable video coding (SVC) multilayer bit streams each having a base layer and enhancement layers; obtaining video service provider bit rate allocation management parameters, wherein the bit rate to be allocated to each of the multilayer bit streams is determined based at least in part on information pertaining to a channel over which a multiplexed single layer non-SVC bit stream is to be transported; storing the bit rate allocation management parameters in a database accessible to a bit rate allocation manager that produces bit rate allocations; producing bit rate allocations for multiple simultaneous programs in a manner that tends to equalize video quality across programs to the extent that is consistent with the bit rate allocation management parameters specified by the video service provider; selecting enhancement layers for each program in a manner that is consistent with the bit rate allocation and bit rate allocation parameters; extracting one or more of the enhancement layers in whole or in part from at least one of the multilayer bit streams so that the plurality of multilayer bit streams are collectively reduced in their total bandwidth, and so that each program in each of the enhancement layers is provided in such a manner that is consistent with the bit rate allocation and bit rate allocation parameters; rewriting each of the extracted enhancement layers to produce a single layer bit stream for each of the extracted enhancement layers; and multiplexing the single layer bit streams to form the multiplexed single layer non-SVC bit stream.