All went quite well, but now having an issue with both FPS and mixed up (garbeled) images, but only for 1 camera. (Axis 2420 IR) The garbeled images are not consistant. Maybe 50 incidents in 20 mins.... each one causes an event to be registered..
Maybe I just need some help tuning the implementation... Not sure where to look.

FYI:
<cam_IP>/cgi-bin/mjpg/video.cgi?resolution=352x240
24 Bit Color
Note: The 2420 IR is a B&W camera, but has never successfully with run (on any version) with 8 bit grayscale... I have assumed that the camera must output a color stream with a black and white image.
Also Note: The problem can be imporved (fewer garbled frames), but not fixed by disabeling (removing the check box) ZM_NETCAM_REGEXPS.
1.22.0 also recored most of these events as motion, but some as "signal" events.