Method and device to regulate the output bit rate in variable bit rate video coders.

摘要

Applicable in compressed video transmission where the bandwidth availability of the transmission system varies with time; and which has the object of continuously matching the video compressor output rate to the occupancy conditions of the transmission system. The method has a first phase in which the level of filling of the output memory (7) of the video compressor (6) is analized, obtaining the number of reading and writing commands made on said output memory and calculating its variation in filling. In a second phase, the information concerning the output memory filling is processed, determining from the latter data and another data, the new statistical parameters that condition the operation of the video compressor, and which are sent to the latter in a third phase. The device carries out the different phases of the method.