Patent ID: 8005337

Claim:
Method for performing audio and video presentation or reproduction including the steps of: receiving a data stream including video and audio streams; separating said data stream into video and audio streams; timestamping audio data packets of said audio stream by first processing means and forwarding audio data packets to second processing means configured to receive audio data packets; determining a local system time of said second processing means; calculating time periods for the transmission of audio data packets from said first processing means to said second processing means, based on said local system time and said timestamps of the audio data packets wherein, when calculating said transmission time periods, the calculated transmission time periods are median filtered in order to obtain a mean transmission time period, and wherein the length of said median filtering is changed dynamically, starting with a pre-defined first number of input transmission time period values and increasing in conformity with the number of further received transmission time period values, up to a pre-defined maximum number of input transmission time period values; synchronising audio and video presentation or reproduction based on said calculated transmission time periods.