In order to summarize the main content of a video sequence quickly and effectively,this paper proposes a new method for extracting video key frames. The proposed technique makes use of Jensen-Tsallis distance to estimate the frame-by-frame distance betw een consecutive video images,to segment a video into shot,and into subshot either with or without large change of the video content. Video key frames are selected based on the subshot. It also proposes a measure for the difference between video frames to ada...