Testing Dahua HDCVI Encoder With VMSes

By: Ethan Ace, Published on May 14, 2015

HD Analog cameras have incredibly low prices for true HD video.

But HD analog recorders are pretty simplistic and underwhelming.

Moreover, many want to use HD analog cameras with their established, higher end VMS software systems.

Now, Dahua has released 4, 8, and 16 channel 1080p HD-CVI encoders, which should make it easier to connect HD-CVI cameras to VMS software.

We tested the Dahua NVS0404HDC-A [link no longer available], a four channel model, with multiple fixed and PTZ cameras, attempting to integrate with Avigilon, Exacq, Genetec and Milestone VMSes:

  • Did all HDCVI cameras, 720p, 1080p, from multiple manufacturers, work without issue?
  • Were there issues streaming all channels at maximum frame rate?
  • What features worked and did not with each VMS?

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    Versions ****

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Comments (25)

John Honovich

IPVM | 05/14/15 01:04pm

Why in the world is this encoder so big?

Avatar

Ethan Ace

IPVM | In reply to John Honovich | 05/14/15 01:23pm

My guess is that since it's the first of their CVI encoders, they wanted to use a common form factor for 4, 8, and 16 channels, and settled on 1U rack mount. If I were a betting man (and I'm not), I'd guess that smaller wall mount models similar to the Hik/Axis form factor would come eventually.

Undisclosed Integrator #1

In reply to John Honovich | 05/15/15 03:09am

If you open it up I have to guess there is a ton of wasted space. Some of the budget equipment out there from Hikvision and Dahua is twice the size it needs to be. This one takes that to the extreme. Ethan's observation above is probably spot on as far as using common enclosures to save cost.

Luke Maslen

IPVMU Certified | 05/14/15 11:32pm

Hi Ethan, if I've got this right, the only advantage of the encoder over a DVR is that the encoder works reliably with third party VMS software systems and the DVR doesn't. Is that right?

If so, I wonder why Dahua wouldn't just enhance their existing DVR's rather than creating an entirely separate line of encoder-only products? It's not like their dedicated encoders are smaller or cheaper than their DVR's! I'm puzzled.

John Honovich

IPVM | In reply to Luke Maslen | 05/14/15 11:39pm

Yes, that is our take away from the testing.

Why does Dahua do what they do? They are a hard company to understand.

Luke Maslen

IPVMU Certified | In reply to John Honovich | 05/15/15 01:14am

Thank you John. I thought I'd missed something. Dahua release a lot of products but often they just release specifications without any story about why the product should be interesting. It's probably obvious to their engineers but not always to me.

Undisclosed Integrator #1

In reply to Luke Maslen | 05/15/15 03:12am

I believe the demand is there for HD-CVI/HD-TVI encoders. I have been pestering Hikvision myself to come up with encoders. Sometimes a customer wants a low end system due to budgetary constraints but the long term goal is a more robust VMS.

John Honovich

IPVM | In reply to Undisclosed Integrator #1 | 05/15/15 01:59pm

Hikvision says 2-3 months for TVI encoders.

Avatar

Sean Nelson

Nelly's Security | 05/15/15 01:08pm

I almost wonder if a Cheap Dahua HD-CVI DVR will also encode to the same equipment as well?

John Honovich

IPVM | In reply to Sean Nelson | 05/15/15 01:12pm

"encode to the same equipment as well?"

Can you clarify what you mean here?

Avatar

Sean Nelson

Nelly's Security | In reply to John Honovich | 05/15/15 01:23pm

Can the regular ol Dahua HD-CVI DVR's encode to (Avigilon, Exacq, Genetec, Milestone). If so, this would save people alot of money as opposed to buying the encoder. But sorry, I oviously didnt read the entire article before I posted that. I just read the paragraph "Compared to HD-CVI DVR's" which clearly answers my question and compares and contrasts the 2.

Andrew Del Biondo

In reply to Sean Nelson | 05/18/15 08:53pm

We are currently testing the Dahua HD-CVI encoder compared to the Dahua limited Tribrid DVR for recording analogue and HD-CVI cameras to Freedom VMS. Initial test results indicate no benefit with the encoder and that using the DVR supports SD analogue cameras, costs less and one less product to support and keep on the shelf.

Avatar

David Johnson

05/16/15 03:22pm

In our comparrison experience - admittedly only a handful -the TVI 4ch DVRs v POE NVR's from the same manufcturer see the DVR's perform better than the NVRs in the responsiveness of the IOS and Android apps. Could this be because of a lower processor load?

I know it seems likely that the anologue HD solutions (TVI in our case) will dominate our lower tier sales through price alone with the benefit of genuinely good performance to boot.

If I was a large legacy brand (Pelco, Vicon?) I'd be jumping all over the encoder idea and assausting the retrofit market.

Opinions?

John Honovich

IPVM | In reply to David Johnson | 05/16/15 03:29pm

"If I was a large legacy brand (Pelco, Vicon?) I'd be jumping all over the encoder idea and assausting the retrofit market."

David, good point / question.

On Vicon, they are probably busy with the merger / integration of IQinvision and their new CEO is an 'IP guy', so I do not suspect that would be a priority.

For Pelco, I see the benefits like you do. Huge analog customer base would be quite a good match for HD analog + HD analog encoders. Will they do it? When will they do it? I don't know. They too seem to be IP-focused right now.

Undisclosed #2

06/09/15 05:18pm

Hello John,

Do you know if the 16 channel model will also only require 1 Milestone License? Do you have any plans to test the performance of the 16 channel model?

Thank You

Avatar

Ethan Ace

IPVM | In reply to Undisclosed #2 | 06/09/15 06:26pm

Hey Undisclosed, it should indeed require only 1 Milestone license, since they license by the number of IP addresses.

We don't have any plans to test performance of the 16 channel model, since it's the same series as this one, just more ports. If they release more encoders or claim newer features, we'd look at testing it again.

Undisclosed Integrator #3

08/06/15 01:31am

What are the lines of resolution after encoding? The Cisco encoders I'm stuck working with are effectively 480.

John Honovich

IPVM | In reply to Undisclosed Integrator #3 | 08/06/15 01:53am

Undisclosed 3, what type of camera are you connecting to the Cisco encoder?

Most encoders are traditional SD analog only with a max of VGA / D1, so yes you should not be getting anything more regardless of what camera you connect to that encoder.

Undisclosed Integrator #3

In reply to John Honovich | 08/06/15 02:50am

So are there encoders with a higher output resolution that is apparent in a vms?

John Honovich

IPVM | In reply to Undisclosed Integrator #3 | 08/06/15 08:50am

Yes, for example, this Dahua CVI encoder. And there are a few SDI encoders out there as well for HD-SDI cameras.

You will, of course, need to make sure you are using appropriate cameras with those encoders to take advantage of the higher resolution.

Michael Miller

08/11/15 07:25pm

Anyone have a US based supplier for the Dahua CVI encoders?

Undisclosed Distributor #4

09/28/15 12:41pm

Hi Ethan, a quick question :

if Genetec does have a Dahua DVR driver is it fair to assume that driver also supports the DVRs from Dahua ? With all the features ??

That would be cool but i remember in the original article about CVI/TVI that Genetec wouldn't connect to the DVRs ( and only Milestone did ). Is this driver newer ?

Thanks,

Avatar

Ethan Ace

IPVM | In reply to Undisclosed Distributor #4 | 09/28/15 03:18pm

Hi, I would need to double check it again but from what I saw in the past, yes, Genetec supports the Dahua DVRs. If I remember correctly, they support all video channels, DVR motion detection, and local recording. I may have some screenshots around from when I looked at it previously, I'll check.

I'm not sure exactly when that driver was released, but I would say it's within the last 6-8 months.

Avatar

James Talmage

IPVMU Certified | 01/06/17 07:45pm

I would be eager to see the Hikvision DS-6700-HQHI-SATA tested as well. It's listed as supported on the Exacq site, which is pretty exciting.

John Honovich

IPVM | In reply to James Talmage | 01/06/17 09:00pm

James,

Thanks for the recommendation. We have a discussion here. I am not sure if we are going to test it. We were waiting to see if they came out with anything new, especially because of its large form factor and because TVI 3.0 is supposed to be out now.

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