Video structural analysis is the process of converting the video sequences of two dimensions to structural data, which is the base of content-based video browsing and retrieval. It mainly includes two parts: temporal video segmentation and key-frame extraction. In this paper we classify most existed temporal video segmentation methods according to dissimilarity measure and threshold specification. Then we analyze their shortfalls. We measure the discontinuity value using MPEG-7 descriptors and take into acc...