A real-time scene cut detection algorithm is proposed which shares the results of motion estimation with the video encoder.To deal with different kinds of scene cuts,two metric functions are introduced based on the statistics of the first and second order difference between the original pictures and their motion compensated pictures.The detection thresholds for each metric are adaptively adjusted according to the scenes.The experimental results and analysis show that the recall and precision of the proposed algorithm are generally higher than other tested ones at the cost of little computation time increment.