ALGORITHMS FOR DETERMINING BITRATE FOR A STATISTICAL MULTIPLEXING SYSTEM USING SCENE CHANGE

摘要

An improved statistical multiplexer (statmux) system for coding and multiplexing multiple channels of standard definition (SD) digital television data, or multiple panels of high definition (HD) digital television data is provided, the system considering when a scene change occurs. A need parameter (NP) is determined for each of the multiple encoders considering scene change that occur, and the NP is provided to a statmux controller to enable a bit rate to be determined for the encoder. The system considers the new scene data after a scene change as well as current scene data being evaluated to determine data complexity for the NP value. This ensures significantly different complexity data after the scene change does not cause an inadequate bit rate determination.