Patent ID: 7710943

Claim:
A method for synchronizing video data with audio data in a mobile communication terminal, the method comprising: receiving video data and audio data in the mobile communication terminal through a set session; determining whether a current sampling rate of the received video data and audio data is consistent with a previous sampling rate of the received video data and audio data; calculating a standard time according to the determination; and synchronizing the video data with the audio data based on the calculated standard time, wherein the standard time is calculated based on a preset ratio if it is determined that the current sampling rate is consistent with the previous sampling rate, wherein the preset ratio is obtained by dividing a variation value of a network time protocol (NTP) time stamp by a variation value of a real time protocol (RTP) time stamp, and wherein the variation value of the NTP time stamp is obtained according to the formula: NTP time — stamp, i+1 −NTP time — stamp, i , where NTP time — stamp, i+1 and NTP time — stamp, i+1 respectively are an NTP time stamp included in an i th RTCP packet and an NTP time stamp included in an (i+1) th RTCP packet.