Monitor not always triggered when linked monitor raises an alarm

gabrielha · Post by **gabrielha** » Thu May 20, 2021 5:59 pm

I got one camera from which ZM takes two streams:

Low res
High res

Two monitors are set up, one for each. The Low res uses Modect and the High res uses Nodect. High res also has Low res as its linked monitor. Both have Analysis Enabled, and both are set to Video Writer, "Camera passthrough", but no JPEG writer.

Now, when the Low res monitor raises an alarm due to triggering, the High res monitor is not always triggered. Out of some 2200 events on the Low res, the High res monitor only has around 300 events. Why are they not equal? If I try to manually raise an alarm on the Low res monitor, the High res monitor always gets an event, so it seems to only pertain to motion detection alarms.

I don't know if this is a misconfiguration on my side, or if it's a bug.

EDIT:
I amend my statement about the High res always being triggered on forced alarm, because now when I tried forcing on the Low res, I got nothing on the High res.

EDIT 2
If I swap the linkage, so that Low res is linked to High res and then forces an alarm on High res, then it works (Low res is triggered and gets an event). But for some reason the reverse does not work...

EDIT 3
I see this in the zms log of the High res monitor:

05/20/21 22:08:26.033765 zms_m3[8669].DB1-zm_monitor.cpp/2310 [Reloading linked monitors for monitor Baksida (hi res), '1']
05/20/21 22:08:26.033770 zms_m3[8669].DB1-zm_monitor.cpp/2362 [Linking to 1 monitors]
05/20/21 22:08:26.033775 zms_m3[8669].DB1-zm_monitor.cpp/2366 [Checking linked monitor 1]
05/20/21 22:08:26.033912 zms_m3[8669].WAR-zm_monitor.cpp/2387 [Can't link to monitor 1, invalid id, function or not enabled]

Any idea why it can't link?

EDIT 4
Apparently, Analysis Enabled must be checked in on the monitor being linked (Low res). Having that activated, I no longer get the above error that it cannot link. However, I still get no triggers on High res monitor...