avcodec-53.dll crashing ispy.exe about ispyconnect HOT 4 CLOSED

I stopped all the new cameras that I added today and now I am back to the 5 
that I had yesterday and everything is running fine. Is there a limitation on 
how many cameras can be configured?

Hello no there isn't - only however many your computer can handle. It could be 
a specific camera emitting broken frames that is throwing this error - try 
cyling through the cameras to find out which one it is.

I didn't think that resources would be an issue before posting this but after 
your reply I checked them. With 5 cameras running the server is using 53% of 
the 2x Quad-Core 2.33GHz CPU's and 3.5GB of 8GB of memory. I added 2 [7 total] 
more cameras and the server was at a solid 80% CPU's and the memory stayed the 
same. Adding 1 more camera [8 total] iSpy immediately crashes. This leaves the 
CPU running at less than 10%. Restarting iSpy spikes the CPU up to 84% 
immediately [7 cameras total].

Any suggestions on settings such as resolution, FPS, etc or a different 
hardware setup to record and display 21 cameras? Really I need all 21 recording 
and maybe 12 displayed.

umm no - recording 21 cameras will take some serious hardware. Best bet is to 
use multiple PCs for that. It's not just writing still frames, it's transcoding 
still frames into an mp4 file. I'd also guess that your hard drive will be 
struggling with writing 21 video feeds to disk at the same time (probably 
causing buffer over-runs)