A media packaging and distribution system that allocates each of a plurality of first instructions from an instruction queue to a corresponding first worker based on an instruction type and a priority level. Each of the plurality of first workers reads a first manifest data, which is non-ingested metadata, of at least one of a plurality of live input streams or a second manifest data of a plurality of pre-encoded media assets from locations of corresponding input manifests. Further, a second instruction from a plurality of second instructions is allocated to a second worker. The second worker inserts a next manifest segment to a disparate live output stream manifest upon reading a manifest metadata ingested into a manifest metadata storage system. Accordingly, the plurality of disparate live media output stream manifests is generated for a plurality of channels based on the disparate live output stream manifest.