| 摘要 |
A video and audio bit rate control system which controls a bit rate of a video signal and an audio signal input from a plurality of information sources is provided. The system includes a plurality of encoders for encoding the video signal and the audio signal, an encoder controller for controlling an audio bit rate used in each of encoders, and a statistical multiplex controller for controlling a video bit rate used in each of encoders. The encoder outputs a degree of difficulty in encoding the video signal based on an amount of the video signals. The encoder controller outputs a differential bit rate between a reserved audio bit rate and a total audio bit rate currently used when the total audio bit rate currently used is lower than the reserved audio bit rate. The statistical multiplex controller calculates the video bit rate for assigning to each of encoder based on the differential bit rate, an originally assigned video bit rate and the degree of difficulty in encoding.
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