实现flv视频格式解析，向flv视频中添加提示点信息，然后flex前端播放器监听提示点。可以想flv视频中添加自定义的xml。-Flv video format to achieve resolution, to add cue points in flv video information, and then flex front-end player, monitor cue points. Flv video may want to add custom xml.