Cluster-based dependency signaling

A device configured to process a data stream representing a multi layered signal into which a video is coded at different layers, the data stream comprising a plurality of packets, each of which is associated with one of the different layers, and each layer is indexed by a base layer-ID or an extension layer-ID, the device being configured to:

• read, from the data stream:
• a first inter-dependency syntax structure indicating inter-dependencies between pairs of values representable by the base layer-ID, and a second inter-dependency syntax structure indicating inter-dependencies between pairs of values representable by the extension layer-ID, wherein an instantiation of the second inter-dependency syntax structure indicates (a) a first layer dependent on a second layer, wherein the first and second layers are associated with a same base layer-ID, or (b) a first layer dependent on a second layer, wherein the first and second layers are associated with different extension layer-IDs;
• and
• construct, based on the first and second inter-dependency syntax structures, an inter-layer dependency description revealing inter-layer prediction dependencies between the different layers.