public EmbeddedSourceSettings withSource608TrackNumber(Integer source608TrackNumber) {
        setSource608TrackNumber(source608TrackNumber);
        return this;
    }
Specifies the video track index used for extracting captions. The system only supports one input video track, so
this should always be set to '1'.

@param source608TrackNumber
       Specifies the video track index used for extracting captions. The system only supports one input video
       track, so this should always be set to '1'.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-mediaconvert/src/main/java/com/amazonaws/services/mediaconvert/model/EmbeddedSourceSettings.java