Dynamic content integration of multiple information sources is one way of providing richer content that will satisfy the diverse demands of users. In this paper, we propose an XML-based language to compose synchronized content from web and video content. The notable features of this language are as follows: (1) dynamic unit identification of content that is composed into synchronized content and (2) dynamic retrieval of content through pre-defined retrieval criteria. This dynamic identification and retrieval of composable units are based on the author?s intentions. Content authors can specify the units of their content that are to be integrated into new content by describing the conditions concerning this content and the conditions concerning the surrounding content. Although the proposed language looks like SMIL (Synchronized Multimedia Integration Language), it differs in its dynamic identification and retrieval capabilities. Indeed, the proposed language works just like the meta-mechanism for conventional SMIL. That is, the script written by the proposed language can generate SMIL data as its output.