The number of clips that Spikes creates is dependent on the duration of the video length that you choose:
0-3 min: 1-3 clips
3-10 min: 7-12 clips
10-30 min: 10-18 clips
30-60 min: 16-25 clips
60-120 min: 25-40 clips
120-180 min: 40-60 clips
Over 180 min: 60-70 clips