Ideal framerate

[Scruit 0]

My 9ch CPCam DVR is rated for 30fps. I have it recording just 1fps total (each image updated every 9 seconds) when there is no motion, and when there is motion it ramps up to 30fps. That 30fps is shared between the cameras that have motion, the rest are 1fps each.

 

When there is a motion even on just one camera that means I get 16fps on that camera which is good enough, but when a vehicle approaches the house and pulls up ot the garage it's covered by 4 camers meaning I get 5 cams doing 1fps and 4 cameras with motion have to share the remaining 20fps = 5fps each. That's pretty slow and jerky.

 

When you choose a DVR for a customer what FPS do you look for? Is there a certain #fps you look for per camera? If I wanted 30fps per camera for 9 cameras that's 270fps - that's a pretty expensive DVR. And I don't need 30fps per camera. I'm thinking the 4 cams aalarming at the same time situation is the highest I'd get unless there were multiple bad guys. I figure maybe 20fps for those 4 cameras and 1fps for the idle cameras. Something close to 80 or 100 fps?

 

Also, what is currently the best video encoding method (for size versus quality)?

 

 

Relating to my other thread... I'm wondering if I could sell this DVR to my friend who needs a basic camera system, and then put that money towards a new DVR for myself...

[blowrabbit 0]

Really depends upon the application. In a retail site over a counter 5 to 7 pps is good and that is in either motion or TL and or both. In spots where you only need a general oversight of the area 3 to 5 works. Unless its a casino type application why waste the storage time. My usual job needs at least one month worth of recording. This is on a wavelet compression and viewed remotely at 5pps its not jerky.

[survtech 0]

The most efficient codec right now is h.264. It has the best quality with the smallest file sizes.