由网络出版引发的“制作一次,出版多次”的理念,经过媒体出版业这些年来的实践,已经有了许多成功的案例。报社的一种做法是,从排版后的电子文档中提取出稿件的XML文档,供网络出版使用。电视台也有一种非常类似的做法是,从播出的视频流中,按栏目内容提取可供网上点播的视频文件 The concept of “making once, publishing many times” triggered by online publishing has achieved many success stories through the years of practice in the media publishing industry. One newspaper practice is to extract the manuscript’s XML document from the typed electronic document for online publication. Television stations also have a very similar approach of extracting video files available online from on-demand video streams from the streamed video stream