结合视频编码标准，对视频编码器的Buffer控制及多路视频信号的统计复用进行了分析，建立了一个控制模型。

Digital video has been transmitted using channels that have constant channel rate. Most video compression algorithms use MC and VLC to achieve compr ession, There always need a output buffer between the video encoder and the channel multiplexer when the encoder operates on the CBR mode. The normal mux. will always waste channel resources when simply combining the input CBR video. Here we give a new mux. module which is based on statistics. It can control the bitrate of every input dynamic.