That would make sense if (as I said) it wasn't ALSO doing it when I manually switch the camera from 'monitor' to 'record' and then back to 'monitor' again, with no external triggers involved, or even running.
This means external triggers are not the issue.
Any other ideas?
I encountered new problems upgrading ZM from 1.34 to 1.36 : events wouldn't record because of buffers issues (see settings in Source > Buffers) or they would start but then fill up RAM in seconds.
Turned out to be from my IP cameras which have a setting "Smart Codec" that had to be turned off to let ZM record correctly (to get iframes). source : https://forums.zoneminder.com/viewtopic.php?f=42&t=30481#p120107
Maybe check on your camera
[support] dlandon - Zoneminder 1.36
in Docker Containers
Posted
I encountered new problems upgrading ZM from 1.34 to 1.36 : events wouldn't record because of buffers issues (see settings in Source > Buffers) or they would start but then fill up RAM in seconds.
Turned out to be from my IP cameras which have a setting "Smart Codec" that had to be turned off to let ZM record correctly (to get iframes). source : https://forums.zoneminder.com/viewtopic.php?f=42&t=30481#p120107
Maybe check on your camera