The proposed method can detect scene boundaries through using various macroblock type of B-frame and P-frame in MPEG video flow in order to realize accurate scene change positioning.

• 该算法只需要通过直接抽取MPEG视频流中的B帧、P帧中的宏块类型信息,并对其进行计算就可以检测出视频中存在的镜头边界,从而对场景变换进行精确定位。