Hello, 
  
I'm trying to build a NVR (network video recorder) on an ARM based embedded linux board.  
  
I have seen NVR manufacturers mentioning specs in the form of a relation like:  
<no. of channels> * <resolution> @ <fps>
 
I understand that this relation is quite straightforward in terms of network bandwidth.  
However, I need to know how one can determine the hardware specifications (CPU, RAM, etc.) for a given relation.  
  
For example, say I need to support 8 channels * 1080p @ 30fps, how can I determine the required hardware specifications for my board? 
And similarly, for the same hardware, I would like to know what max. fps can be supported for 8 * 2K cameras. 
  
Thanks in advance.