Best starlight cam for the price

[MakeItRain]

Congrats, but don't get to enamored with the "4K" and "MP" BS. The 2MP 5231 and variants are pretty hard to beat. And impossible to beat in low light, period. All the rest of that shit is marketing. But I have to admit that 1831 looks awesome! BTW I run mine at 7 FPS which is fine. Another misconception, IMHO, is these silly frame rates of 25, 30 or even 60. You don't need more than 10 for security cams.

I’m hoping I will save bandwidth/file size by using 7-15fps as opposed to 25-30 fps at 4k.

I’ve got a Amcrest(Dahua) 4116E 16-ch nvr. I hope it’s up to the task.

 

[NoloC]

Bandwidth will be a function of bit rate regardless of fps. But lower fps will allow higher res capture at a given bit rate, more or less.

 

[aristobrat]

ust ordered (2) HFW-1831E and (1) HDW4831EM-ASE from Empire.

Very cool. I'm guessing the newer 1831s will do a whole bunch better in low light than the 4831... When you get them all setup, let us know what you think!

 

[MakeItRain]

Currently, I have a Dahua (Amcrest) 4116E NVR. The spec sheet and Amcrest confirms the following:

Record Rate 80Mbps
Bit Rate 16Kbps ~ 20Mbps Per Channel

I don't understand the difference between record rate and bit rate (per channel). And... why it's so low. Most of the 3-4MP cameras operate at 10,240Kbps. If I have 16 of these cameras, that would mean (16 x 10,240) = 160Mbps. That would exceed the NVR's capability no? Of course, this is assuming that I am running the cameras in 24/7 continuous record mode (which is what I'm doing).

I guess what the spec sheet is telling me is that the total combined throughput must not exceed 80Mbps but each channel can go up to 20Mbps. Okay, I think I get that. But since I already have 5 (4MP) at 10Kbps, 1 49225-PTZ at 8Kbps, and 2 1080p at 5Kbps, and 1 IP3M-943b wifi at 2Kbps, I am left with: 81,920Kbps (max) - (5x10Kbps) - (8Kbps) - (2x5Kbps) - (2Kbps) = 10,240kbps.

But I just ordered 3 more 4K cameras.... and those are going to be pushing 5-7Kbps each even with H265+. I guess the problem is that the garbage Amcrest 4MP poe's doesn't support H265.

So the only solution would be to buy a second NVR, (or) sell my Amcrest POEs and get H265 versions, or make half my cameras record only on motion...

 

[SouthernYankee]

You can not calculate your bit rate that way. Your bit rate is based upon your setting and the type of picture scene you are recording.

H.265 will save you a little over h.264. But my testing in Blue Iris between h.265 and h.254 it that it is not much in my picture scenes,

In your camera You did not indicate what your frame rate is and your Iframe interval value is, your max bit rate. Set your frame rate to 10 fps and Iframe interval to 20. If you have it set your bit rate type to vbr.

 

[mat200]

Currently, I have a Dahua (Amcrest) 4116E NVR. The spec sheet and Amcrest confirms the following:

Record Rate 80Mbps
Bit Rate 16Kbps ~ 20Mbps Per Channel
...

Hi @MakeItRain

Many of the Amcrest NVR models are a bit on the "light" side.

For example the Dahua OEM NVR5216-16P-4KS2(E) : Max 320Mbps Incoming Bandwidth

Also remember the NVRs have a limit on how many channels they can decode for display
( for example: the NVR5216 specs Decoding Capability: 4-ch@8MP(30fps), 16-ch@1080P(30fps) )

 

[MakeItRain]

Sounds like I'm going to need a new NVR.

Man, this was never supposed to be a hobby. Now it's becoming an expensive hobby.

 

[NoloC]

Sounds like I'm going to need a new NVR.

Man, this was never supposed to be a hobby. Now it's becoming an expensive hobby.

Welcome to our world.

 

[MakeItRain]

My amcrest (dahua) NVR and PoE cams behave strangely. This particular 4MP amcrest(dahua) cam would sometimes print a whopping 88,955kbps in the Amcrest Surveillance Pro live view window...which is not possible for a 4MP megapixel camera.