Starttime and endtime not used

[GeniusMundi10]

Even though providing starttime and endtime why is that the videos which gets downloaded is way longer than required some times its 2.5 hours or 1.5 hours although we are always looking to download 16 minutes of video. Its very random. The command we are using hikload --server servername --user username --password password --starttime 2024-03-05T08:06:00 --endtime 2024-03-05T08:08:00 --cameras=2001 and it is downloading the video from 6:17 am to 9:00 am. Why is that. AM i doing something wrong?