To reduce the influence on video decoding quality induced by transmition error

This paper analyzes several classical error concealment methods and evaluates them on AVS-M. Based on the test result

an adaptive spatial-temporal error concealment (ASTEC) algorithm is proposed. According to the boundary matching degree of switch between spatial/temporal concealment methods adaptively. Simulation results show that

compared with the original spatial and temporal method

the proposed algorithum achieves better performance

especially on the quality of reconstructed image.