public String getStartTime() {
        return this.startTime;
    }
Specify when the motion overlay begins. Use timecode format (HH:MM:SS:FF or HH:MM:SS;FF). Make sure that the
timecode you provide here takes into account how you have set up your timecode configuration under both job
settings and input settings. The simplest way to do that is to set both to start at 0. If you need to set up your
job to follow timecodes embedded in your source that don't start at zero, make sure that you specify a start time
that is after the first embedded timecode. For more information, see
https://docs.aws.amazon.com/mediaconvert/latest/ug/setting-up-timecode.html

@return Specify when the motion overlay begins. Use timecode format (HH:MM:SS:FF or HH:MM:SS;FF). Make sure that
        the timecode you provide here takes into account how you have set up your timecode configuration under
        both job settings and input settings. The simplest way to do that is to set both to start at 0. If you
        need to set up your job to follow timecodes embedded in your source that don't start at zero, make sure
        that you specify a start time that is after the first embedded timecode. For more information, see
        https://docs.aws.amazon.com/mediaconvert/latest/ug/setting-up-timecode.html
aws-java-sdk-mediaconvert/src/main/java/com/amazonaws/services/mediaconvert/model/MotionImageInserter.java