Audio and video Seek synchronization strategy

The invention provides an audio and video Seek synchronization strategy, relating to the multimedia audio and video playing technology field. The invention provides a Seek synchronization strategy of reasonably selecting a Seek synchronization point to rapidly complete a Seek operation. The strategy comprises the following steps: according to accuracy of synchronization, setting a threshold GT; if AT larger than VT, and notifying a video decoder that all video frames whose time stamp is less than AT is decoded and not outputted, wherein a position of Seek is AT, i.e., a synchronization point is AT; if AT is less than VT, discarding a present audio frame, and continuing to read a source file until a read time stamp CT is close to VT and VT is larger than CT. Then the audio decoder is notified that data of a VT-CT time length needs to be discarded after audio decoding of the frame. According to the invention, determination of the synchronization point is more accurate, synchronization determination is placed be