An H.264-based packet loss resilient intra refresh algorithm is presented in this paper.Firstly

the intra-refresh matrix is created to record the dependent relation of the blocks in the current frame to that in the reference frame.Secondly

based on intra-refresh matrix

an end-to-end rate distortion(ME2ERD)model for packet loss network is proposed to estimate the motion mode of a block.Then

by using supplemental enhancement information(SEI)domain

an adaptive intra refresh method is achieved to reduce the quality degradation due to error propagation.Compared with random intra refresh method

the proposed technique can improve the video quality more than 5dB over variable and error-prone channel.Furthermore

this algorithm is compatible with H.264 without any increasing channel burden and arithmetic complexity

and can be used in practice.