| 摘要 |
A rate control system (107) for a video encoder including rate control logic (111) which determines a first QP corresponding to a selected encoding layer of multiple encoding layers, and scaling logic (112) configured to scale the first QP to a second QP corresponding to any other encoding layer based on at least one encoding layer parameter. A template (113) of stored QP values may be used to reduce computational complexity, such as a QP value for each frame interval or a QP value for each of multiple rate control interval complexity values. The QP values in the template (113) may be predetermined or programmed and updated during periodic training sessions. Several encoding layer parameters are contemplated, such as any combination of bit rate, frame rate and frame resolution. The scaling logic (112) may be configured to scale from any one encoding layer to another and vice-versa for bi-directional scaling. |
