一种基于XML的隐藏字幕数据交换格式

Data Exchange Format of Closed Caption Based on XML

隐藏字幕是国家最新推出字幕与节目画面分离播出的技术标准。着重研究隐藏字幕在电视台内部进行存储和数据交换时的数据格式。在分析了隐藏字幕组成结构的基础上,提出了字幕语句的新概念,并指出三种语句的不同用法。并在此基础上设计了基于XML的隐藏字幕的数据交换格式CCDXF。经过实验证明,CCDXF文件完全可以在MXF中嵌入、传输和解析,为隐藏字幕的数据交换提供了一种台内的数据交换方法。

Closed caption is the latest technology standard in separation of caption and the programs broadcast images. Data format of storage and data exchanged of closed caption in television station are focused on. Based on the analysis of the structure on the closed caption, the new concept of caption statements is put forward, and different usage of three statements are pointed out. And on this basis, the closed caption data exchange file format based on XML （CCDXF） are designed. The experiment proves that CCDXF can be embedded, transfered and parsed in the MXF. This format can provide a way to closed caption data exchange.