基于XML的视频剪辑时间线构建方法

XML-Based Construction Method of Video Editing Timeline

DES(DirectShow Editing Services)是基于DirectShow的视频编辑编程接口,通过建立时间线模型进行多媒体编辑,其自带的XML Parser组件可以用来保存和恢复时间线编辑信息。开发1种时间线构建系统,直接通过编辑XML文件建立时间线模型,将复杂的时间线接口调用转化为简单的XML文档编辑任务,使基于此的系统扩展更加简便。使用Delphi的TXML Document组件读取、写入XML文档,使用树状模型显示及修改,并通过输出引擎得到预览画面及视频文件。

DES （DirectShow Editing Services） is a series of DirectShow-based video editing programming interfaces, it edits multimedia by building time-line models, its built-in component XML-Parser can be used to preserve and restore the timeline information. The paper expounds a timeline-building system, by editing XML files directly, depressing the complexity of the timeline interface calling into simple XML- document editing tasks, making expansions based on the system easier. It uses the TXMLDoeument com- ponents of delphi to read and write XML documents, and uses the tree models to display and modify, and eventually gets preview pictures and video files through the output render engine.