CHANNEL SWITCHING METHOD, APPARATUS AND SYSTEM

摘要

Embodiments of the present invention provide a channel changing method, apparatus, and system. The method includes: recording in real time a timestamp of a media packet of a multicast media stream which enters a buffer, and a key frame which enters the buffer; when a channel changing request transmitted by a terminal has been detected, obtaining a first timestamp of a media packet which is of a target channel and enters the buffer at a channel changing request moment, and a second timestamp of a media packet in which a key frame which is of the target channel and is the last to enter the buffer before the channel changing request moment is located in the media packet of the target channel; determining a timestamp difference between the first timestamp and the second timestamp; and transmitting the timestamp difference and a burst media stream of the target channel to the terminal; where the timestamp difference is used for the terminal to rectify a timestamp of a media packet of a media stream which is received after the channel changing request moment. In the embodiments of the present invention, a delay in playing the multicast media stream by the terminal is reduced, and the terminal that has undergone channel changing plays the multicast media stream synchronously with a terminal that has not undergone channel changing.