* Question
| What are the two stages of frame rate control? |
* Answer
| (1) Pre-coding stage.At this stage, QP is calculated for each frame, the frame type is different, and the calculation method is different.Since the B frame is not used as a reference frame, its QP is obtained by linear interpolation of the QP of the adjacent P frame by Jane and Hong.The P frame is used as a reference frame, and its QP needs to be accurately calculated.(2) Post-coding stage.To avoid overflow of the buffer, the buffer fullness is judged. If the current frame stream is sent to the buffer and the fullness exceeds a certain threshold (such as 80%), the next frame is skipped. |
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