AbstractCurrently, multimedia documents can be displayed on multiple platforms (laptops, smartphones, tablets, etc.), that resulting in a birth of new information system called pervasive. The various execution contexts of a multimedia presentation introduce different constraints for the presentation itself. In this paper, we propose a specific ontology for on-the-fly (runtime) adaptation of multimedia documents. More precisely, we propose semantic rules allowing the automatic generation of dynamic and quality composition of heterogeneous components. Our proposed ontology has the great advantage to offer to users a flexible infrastructure in order to easily govern the response time and the quality assembly of their own applications at runtime.