从视频中提取关键帧，采用贪心算法和堆排序来处理视频中的大量帧信息。-Extracted from the video key frame, the use of greedy algorithm and HEAPSORT to deal with a large number of frames of video information.

mpeg1播放软件 同时可以参考信息，学习mpeg1的开源软件-XMPLAY is a very nice directory-browser under X11 to use XMPEG, the interactive X11-MPEG-player. MPEG is a video-format described by the ISO-standard ISO CD11172. This implementation here can handle MPEG-str

实现从TS视频文件中提取所有I帧。分别输出PES文件、ES文件和I文件-Extract all I-frames from TS video file.The PES file, ES file and I file output respectively.