A system is provided for publishing first programming schedule that references at least one or more pre-encoded media assets and/or one or more live input streams, and comprises one or more playout buffer features enabled via one or more constraints and rights. Each playout buffer feature of the one or more playout buffer features is associated with corresponding number of media segments that represents the one or more pre-encoded media assets and/or one or more live input streams. A request is received that comprises at least a stream identifier and at least an additional parameter. In accordance with a playout buffer feature from the one or more playout buffer features and at least the additional parameter, manifest data and indexed metadata of one or more media segments associated with stream identifier is inserted to first disparate live media output stream manifest and first disparate live media output stream is generated.