Sequence-based rate control for constant quality video
Most model based rate control solutions have the generally questionable assumption that video sequence is stationary, and also suffer from the fundamental problems of model parameter mis-estimation. In this paper, we propose a sequence based bit allocation solution with the capability of tracking the nonstationary characteristics in the video source without look-ahead encoding and thus the stationarity assumption is no longer needed. In addition, a new model parameter estimation approach is provided to solve the problems in the existing model parameter estimation schemes. Moreover, a general concept of bit allocation guarantee is presented to achieve the allocated bits in a deterministic way. The proposed rate control solution can achieve constant quality video with less quality flicker and motion jerkiness.