This paper proposes an interoperable metadata model generating summary description for multimedia content using Dublin Core (DC). The motive is based on the fundamental concepts such as (1) Description information about the multimedia content is essential in multimedia content access, search and retrieval process (2) the existing metadata are too complicated to use in applications such as e-cataloguing and browsing of e-commerce. As an approach to solve the problem, summary description that may be optimally minimal descriptive elements set derived from existing metadata schemes (full descriptions) is described in this paper. The proposed summary description generator model is achieved using thesaurus approach built on the basis of DC and any existing various metadata schemes.