This article addresses the interoperability between the semantic learning platforms and the educational resources banks, more precisely between the LOM and MPEG-7 standards. LOM is a set of metadata associated with e-learning content, while MPEG-7 is a standard for describing multimedia content. The use of educational resources has become an essential component to meet the learning needs. Given the multimedia nature of these resources, such use causes problems in the interoperability of multimedia learning objects in e-Learning environments, indexing and retrieval of digital resources. Faced with these problems, we propose a new approach for the multimedia learning objects by using the ontology mapping between the LOM and MPEG-7 ontologies.