Abstract: A data transmission method/apparatus, including: receiving a first data frame sequence transmitted by a source device within a first time window, the first data frame sequence comprising at least two data frames, determining data jitter information based on the first data frame sequence, the data jitter information describing data frame jitter within a time window, setting a first buffering duration threshold of a data buffer based on the data jitter information, and increasing a transmission rate of transmitting a data frame of the data buffer to a destination device based on a playback duration corresponding to a data frame currently comprised in the data buffer being greater than or equal to the first buffering duration threshold.