destination608ChannelNumber property
Ignore this setting unless your input captions are SCC format and your output captions are embedded in the video stream. Specify a CC number for each captions channel in this output. If you have two channels, choose CC numbers that aren't in the same field. For example, choose 1 and 3. For more information, see https://docs.aws.amazon.com/console/mediaconvert/dual-scc-to-embedded.
Implementation
final int? destination608ChannelNumber;