clip lengths

I noticed after going through my clips day in and day out that almost every clip that has the shortest possible video time or so (= pre-trigger time + post-trigger timeout “break”) is useless. A false alarm from some bug, or some leaf, or something. I don’t mind recording these, but it gets old...

We have a camera set up to record wildlife at night. I have the motion detection triggering without problems but I need the triggered recordings to be at least 90 seconds long (some animals come into shot and hardly move at all. Blue Iris then stops recording. For the life of me I can't see...