Patent ID: 8473997
Filing Date: 2013-06-25
Classification: H04L,H04N

Abstract:
1. A channel changing method, comprising: 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; determining a timestamp difference between the first timestamp and the second timestamp; and transmitting the timestamp difference to the terminal, and starting from the key frame, transmitting, in a unicast manner and to the terminal, a burst media stream of the target channel in the buffer to the terminal, wherein the terminal uses the timestamp difference to rectify a timestamp of a media packet of a media stream which is received after the channel changing request moment, and the media stream which is received after the channel changing request moment comprises the burst media stream.