Method, device and computer storage medium for rate control

Abstract

The application discloses a code rate control method, a code rate control device and a computer storage medium. The code rate control method comprises the following steps: predicting the complexity of a current short-term regulation period; calculating the complexity bits of the current short-term regulation period based on the predicted complexity, the actual complexity of a previous short-term regulation period and the actual bits of the previous short-term regulation period; obtaining the buffer state of the current short-term regulation period, determining the buffer bits of the current short-term regulation period based on the buffer state; determining the target bits of the current short-term regulation period based on the complexity bits and the buffer bits; determining the quantization parameter of the current short-term regulation period according to the target bits, and encoding the video data in the current short-term regulation period by using the quantization parameter. In the foregoing manner, the regulation condition of adjacent short-term regulation periods is considered, and the state of the current short-term regulation period is also considered, so that the adaptability of the code rate control is improved while the accuracy of the code rate is ensured.

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