Interestingly - a development on this topic.
Check out this response from the Australian CCTV supplier that posted the sample video of the LED lights being event-triggered :
And the firmware on their website :
I tried this and confirm that it does have the ability to event-trigger the LEDs, as shown in the accompanying PDF showing the configuration setup.
What's odd though is that the apparent firmware version of 5.6.2 is older than the EU portal 5.6.5 that does not have this feature.
Though it has a newer build date of 200407 as opposed to the build date of 200316 of the 5.6.5 version.