This deliverable defines the functional and non-functional requirements of the MeMAD prototype system, based on input concerning the tools developed in WP2, WP3, WP4 and WP5 and based on the project’s overall use cases from which many requirements will be dictated. This initial version introduces the methodology that will be followed to construct the project’s prototype requirements and exchange format specifications. We then identify relevant stakeholders and processes for the project’s prototypes from the media production and consumption chain. We define an initial set of user stories for the prototype system, from which the functional, non-functional and data interchange format requirements for the first version of the MeMAD prototype are then derived.