AMEN
An alarm system is security. A camera system is surveillance. That may appear to be splitting hairs, but an alarm is an active system, either making noise, notifying a central office or both. A surveillance system simply records what happens IF you record 24/7. Even if you configure the video surveillance system to notify you, it is still not doing anything actively to intercede in the event and perhaps prevent/abort what's happening.
The three basic rules of video surveillance cameras-
Rule #1 - Cameras multiply like rabbits.
Rule #2 - Cameras are more addictive than drugs.
Rule #3 - You never have enough cameras.
Follow EVERY optimization in the wiki and you will be fine.
And by EVERY, I mean EVERY. Too many people come here complaining of high CPU usage and claim they have done every optimization in the wiki and once they post screenshots, we see they are not using the substreams and that is probably one of the biggest CPU savers. Do not skip one because you think it isn't important or won't make that big of a deal. Even dropping frame rate a few FPS can make a big difference. No reason to run more than 15FPS, and many us have cams running at 10 to 12 FPS.
A member here was able to run 50 cameras on a 4th generation CPU at 30%, so you will be fine for awhile LOL.
If you do not understand what something does in BI, then ask. Too many people also change a setting not realizing what it does and actually makes their performance worse.
Optimizing Blue Iris's CPU Usage
Blue Iris uses a lot of CPU time. In most Blue Iris installations, your CPU is the limiting factor which determines how many cameras you can have. As such, it is extremely important to optimize your configuration to ensure you can get the most out of your system while consuming the least...ipcamtalk.com