To solve the error propagation of whole frame loss in video transmission,a whole frame error concealment algorithm based on multiple-frame extrapolation is presented.Bidirection motion vector extrapolation method from available neighboring frames is used to get the motion vection candidate sets of the lost frame.A weighted multi-frame boundary matching errors criterion is presented to estimate the distortion of both the lost frame and its succeeding frame,and the optimal motion vection is determined from the motion vection candidate sets.Finally,adaptive overlapped blockmotion compensation is used to reconstruct the lost frame.Simulation results show that the presented algorithm can recover the lost frame and effectively suppress error propagetion.Compared with other conventional methods,the proposed algorithm achieves 0.5~1 dB gain in terms of average PSNR and provides much better error concealment results.