segmentLength property
Use this setting to specify the length, in seconds, of each individual CMAF segment. This value applies to the whole package; that is, to every output in the output group. Note that segments end on the first keyframe after this number of seconds, so the actual segment length might be slightly longer. If you set Segment control (CmafSegmentControl) to single file, the service puts the content of each output in a single file that has metadata that marks these segments. If you set it to segmented files, the service creates multiple files for each output, each with the content of one segment.
Implementation
final int? segmentLength;