Scte35SegmentationCancelIndicator
Corresponds to SCTE-35 segmentation_event_cancel_indicator. SEGMENTATION_EVENT_NOT_CANCELED corresponds to 0 in the SCTE-35 specification and indicates that this is an insertion request. SEGMENTATION_EVENT_CANCELED corresponds to 1 in the SCTE-35 specification and indicates that this is a cancelation request, in which case complete this field and the existing event ID to cancel.