Mail theft revisited 2020 long version ...for those who may not know

I always imagine how much I would kick myself if was recording sub + main on trigger, something happened, and the one shot I really needs somehow fell just outside the trigger range.
See this thread

 
Interesting. Currently I always record main + sub continuously. Storage requirements are heavy, but I always imagine how much I would kick myself if was recording sub + main on trigger, something happened, and the one shot I really needs somehow fell just outside the trigger range.

No doubt that can be mitigated by long post (and pre?) record times either side of a trigger, but what about something happening and somehow, not tripping a trigger?
I've run into that at the condo, took me awhile to tune the alerts and trigger and pre-post footage. Helped to have other cameras seeing the same people or cars with at least some overlap.
But I had room to run 2- 3.5" HDD's so i ran with a WD purple 8TB and a WD Blue 6TB. i had to remove the blue drive it wasn't up the task (SMR drive) and found a WD white label 5TB ( CMR) drive.
So i had some forgiveness in storage. The first version of Blue Iris was the Amcrest 5.0 with no Substreams yet. Soon after The guys told me to upgrade to whatever version 5.2.7 or higher i think and that was awesome.

My LPR is an Empiretech 5442-Z4. Ran mainstream only for reasons you cited. (missed motions, late mainstream uptake) Tinkering helped, but then I tried IVS on the ONVIF parts of the cam and BI, which was a big improvement, and went Sub/Main now with AI and object detection set to 45% confidence I'm getting 98% ( some vehicles have no plate, Bent plate, obfuscated plate). The the other two cameras seeing that street help me review my accuracy as well.