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Blance FPS & resolution with bitrate (IP2M-842E)

Posted: Wed Jul 20, 2016 9:12 pm
by Brett_F
Using B.I. as the software package, I am trying to balance the frames per second (FPS) and the resolution while balancing the bandwidth & CPU requirements.
If I max it out, the PC (Dual Dore Win7 6GB RAM) has a hard time to keep up with 2 cameras. My home internal network is all GB, the cameras are PoE (100MB), no Wi-Fi in use for any of this (yes I have Wi-Fi but not for this application).
At 720P resolution and 20 FPS with a 1024 bit rate, it works well but at 40' distance, I zoom into a license plate, I cannot read it.
So I need the 1080P mode to get that resolution detail but at 20-30 FPS, it is crushing to the PC.
So I have dialed it down to 15 FPS & 1024 bit rate VBR Quality level "4" (max 6) "640-6144Kb/S" Reference Bit Rate (unclear what that means). I also set it to just H.264 (not 264B or 264H). I have an Intel CPU, so the hardware decoding is supposed to assist.
So other than throwing it up against the wall to see if it sticks, is there a best practices cheat sheet kicking about?

Re: Blance FPS & resolution with bitrate (IP2M-842E)

Posted: Tue Apr 25, 2017 9:03 am
by farazr
I was running into the same problem where the video quality wasn't very good. It looks like you've already done some of the changes I ended up doing to get the best result so maybe the PC's specs are the limiting factor.

I'm using Amcrest's NV4108E NVR and then also Blue Iris on my desktop computer.

In any case, here's what my final configuration ended up being for all my cameras (I have 4 x IP3M-943W and 1 x IP3M-956E), which are all hardwired (none running on WiFi).

Image

I also found this chart online (https://www.unifore.net/ip-video-survei ... tting.html) that helped me figure out the ideal bitrate for with respect to FPS and resolution.

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