Code rate adjustment method and device, equipment and storage medium

The invention provides a code rate adjustment method and device, equipment and a storage medium, and belongs to the field of video transmission. The method comprises the following steps: acquiring the buffer length of a first terminal at the current moment; wherein a first terminal obtains data from an edge CDN node and a plurality of second terminals; the buffer area length refers to the playing duration of cached data in the buffer area of the player; in response to the condition that the buffer length is not greater than a first threshold value, obtaining a plurality of available bandwidths of the first terminal at the current moment, the available bandwidths being related to transmission time consumption corresponding to the first terminal; the transmission time consumption refers to the duration required for acquiring data from the edge CDN node and a part of the second terminal, and the part of the terminal is determined by the link quality of the transmission link; then, according to the available band