Two-pass rate control techniques for video coding that uses the distortion characteristics - rate

摘要

This specification describes rate control techniques that can improve video coding based on a "two-pass" approach. First pass, rate of the video sequence based on the statistics of the first pass - coding the video sequence using the set quantization parameter of the first (QP) for the purpose of estimating the distortion characteristics . Set of QP and the second can be defined for the second coding pass next. Rate is estimated in the first pass - distortion characteristics are used to select the QP for the second pass in a manner that minimizes the distortion between frames of the video sequence.