It depends on the number of words. @feyfayer explained it well.
I will repeat what @feyfayer said. Here are two rules from the NSSA :
The segmenters always add 1 second extension to each segment created. This extension begins when the speaker has finished.
The minimum length of a segment is 1 second.
Sometimes, the segmenters can’t respect those rules when the characters speak fast. If you think a segment is too short, it must be because the segmenter had no choice. Fortunately, this rarely happens.