METHOD AND APPARATUS FOR PROCESSING VIDEO AND AUDIO DATA RECEIVED IN DECODING SYSTEM

摘要

A method and apparatus for processing video and audio data received in a decoding system are disclosed. The method includes the following steps: when a program reference clock is not available in the system, a video or audio presentation time stamp or a linear combination result of the video and audio is used for recovering a system time clock; the system time clock is compared with the current presentation time stamp of the video and audio data acquired so as to determine a processing mode of the current data; a difference value of the video presentation time stamp and the audio presentation time stamp is monitored; the absolute value of the difference value is compared with a set threshold value. When the absolute value is great than or equal to the threshold value, an asynchronous play mode is adopted as a system play mode; otherwise, a synchronous play mode is used as the system play mode.