Video codec system with real-time complexity adaptation and region-of-interest coding

摘要

A method for adapting the number of encoded bits produced by a codec to a system target bit-rate, setting the frequency at which intra-coded frames are sent to a second predetermined frequency range that is lower than the first predetermined frequency range, unless there is motion in more than a predetermined percentage of the macroblocks, in which case the sending frequency of the intra-coded frames is set to the first predetermined frequency range.