In one embodiment, a method implemented on a computing device includes: receiving one or more video mosaic source services, each of the one or more video mosaic source services comprising a plurality of cells, each cell being associated with a content source; receiving signaling data, the signaling data comprising at least one attribute defining a current content available on a content source; receiving a request specifying an attribute to use for producing a mosaic presentation screen; and upon receiving the request, compositing cells extracted from the received one or more video mosaic source services into a mosaic presentation screen, the composited cells being associated with content sources whose current content attribute corresponds to the specified attribute.