AncillaryMessage Field Type Repeated Description message oneOf ⮑initial_config AncillaryConfiguration ⮑subscription Subscription ⮑scte35_event Scte35Event Scte104Event scte104_event = 4; Argument of Method Description CreateTransformAncillary Observe, modify or inject ancillary data such as SCTE-35 AncillaryEvent AudioBuildMultichannelConfiguration