Effective and scalable distributed solutions for data indexation and management should provide solutions for three sensitive issues: the system's architecture that integrates the mentioned facilities, the management of the indexation techniques and the modeling of the metadata that describe the multimedia contents. This paper presents a generic and scalable distributed architectural solution that integrates a flexible indexation management technique and enables to deal with any metadata models. Our solution was developed in the context of the LINDO project, by capitalizing and enhancing the existing solutions for each issue while also respecting the project's requirements. The solution proposes an innovative indexing management technique, and includes the system's architecture and the metadata model that sustain it. In order to validate our proposal, several implementations are presented which are related to broadcast, video surveillance and archive activities.