HD Analog vs IP Guide

By: IPVM Team, Published on Jul 16, 2019

For years, HD resolution and single cable signal/power were IP camera advantages, with analog cameras limited to much lower resolution and requiring separate power and video cables. However, in new HD analog cameras, AHD, CVI, and TVI have made significant advances, with resolution similar to IP, single cable power up the coax, and more.

In this report, we examine AHD, CVI and TVI, including their latest generation advances, compared to IP cameras, including:

  • HD analog variants: AHD, CVI, TVI
  • Encoding / transmission differences between IP and HD analog
  • Advantages and disadvantages of encoding in the camera
  • Resolution differences between HD analog and IP
  • Advanced features: I/O, audio, camera side motion, etc.
  • Recorder compatibility
  • Coax compatibility
  • Power over Ethernet (PoE) vs. Power over Coax (PoC)
  • Vendor support of HD analog
  • Cost differences between analog and IP

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** **** ******, ** examine ***, *** *** TVI, ********* ***** ****** generation ********, ******** ** IP *******, *********:

  • ** ****** ********: ***, CVI, ***
  • ******** / ************ *********** between ** *** ** analog
  • ********** *** ************* ** encoding ** *** ******
  • ********** *********** ******* ** analog *** **
  • ******** ********: */*, *****, camera **** ******, ***.
  • ******** *************
  • **** *************
  • ***** **** ******** (***) vs. ***** **** **** (PoC)
  • ****** ******* ** ** analog
  • **** *********** ******* ****** and **

[***************]

Recent *******: ***** **** ****, ***/** **********, ******* *******

****** **** **** **** to ******, ****-******** ******** such ** ***** **** coax *** ** ****** availability **** **** ******** as ** ****:

  • ***** **** ****: ****** ***** **** coax ** *** *********, Hikvision ****** **-** ****** of *** *** ******* (*** *** **** ** Hikvision *** ***). ***** ****** ******* models ** *** *** cameras, ****** **** ******* than *********. ***** *** some ********* *** *** cameras, ****** **** **** larger *** ********* (******, Digital ********).
  • **/*** ** ******: *** ** ****** models *** *** ****** in ****. **** **** while **** *** ******** as **, **** *** not *********** **** **, as **** ** *** support ** *** ******** by *********.*** *** **** ** Dahua/Hikvision *** ***/***.
  • ******* *******:** ** ****, **** new ********** ** ****** DVRs *** ******** ******* AHD, ***, *** *** as **** ** ** analog ** *** **** ports, *********** ******** "*********" recorders. **** ****** *** greater *********** ** ****** selection *** ******* ****** lock-in.

HD ****** ********

***** *** ***** ***** HD ****** ********:

  • ****** **** ********** (***)
  • **** ********** ********* ***** Interface (**-***)
  • **** ********** ********* ***** Interface (**-***)

*** ** ****** ******* support ******* ***** ************, typically ** **** ** RG-59 ***** ***, ** least * *** ********** of *****, **** *** generations ****** ******* ** 3MP, ***, ***, *** 4K.

Analog **** ********** (***)

****** **** ********** (***) was ********* ******** **** ************ ********, ********** ********* **** a *** ********** ** 720p, *** ********* ** 4MP, ***, *** ** in ***** ********.

*** **** **** ***** brands ********** *** **************** ******* ********. *******, AHD ** **** ******* for ***** **** ********* from **** *********** ******. For *******, ******* *** be ***** **** ****** of $** ** ****, though ********* **** ******* with ** ***** *** minimum *******.

High ********** ********* ***** ********* (**-***)

**-*** (********* ***** *********)*** ********* ** ***** and *** ********** ********* to ****. ** *** since **** ******** ** others, ****** ***-***** *** product ******* ****.

*** ***** ******* *** CVI ******* ** ***** America *** ***** ******** ******** *************** ********, ***** *** ******* camera *** ******** ******, as **** ** * handful ** ****** ***** brands.

***** ********** **** *** proprietary, *** **** ******** support *** *** *** TVI, *** *************** ** *** ****. ****, ** ****, Dahua******* ***** ******** **** their *.* *******, ******* ** ******* for *** *** *** on ***** ** ****** recorders.

High ********** ********* ***** ********* (**-***)

**** ********************* ********* **-***(********* ***** *********), ***** has **** ******* ** several *************, *** ******* of ***** ** *********, Dahua's **** ****** **********. Others, **** ****&*,***,*****, *** ******* ************* have ******* **, ** well. ************, ********* *** numerous ************ ****, *** **-*** ** increasingly ******** ********* **** them.

***'* ****** ******** **** added ******** ******* *** AHD *** *** ******* as **** ** ***, 5MP *** ***/** *********** (all ** ****/****).

Encoding/Transmission ***********

*** ************ ** ******* and ********** (*.*., *.*** or *.***). *** *** difference ******* ** ****** and ** ** ***** compression ** ****.

** ** *******, *********** is ********* ****** *** camera. ** ** ******, compression ** ********* ** the ****** **** (*.*., recorder, *******, ***** ******, etc.).

**** ** * ***** driver ** *********** ***********.

Advantages ** ******** ** *** ******

** ******* **** ******* advantages *** ** *********** things ** *** ******:

  • ********* ** *********** '*********'. Because *** ***** ** compressed ** *** ******, the ****** *** ** 3MP, ***, ****, **** or **** *** *** easily '***' ****** ******** networking ************** (*.*., ***** Ethernet).
  • ******** ******** *** ****** be ***** ** *** same ******** **** ********** the *****, *** ******** audio, ************* **********, ******* ******** imagers, ******* ***** *********, etc.
  • ** *********** ******** ** needed ** *** ********* side. ***** *** ***** is ********** ********* ** standards-based *.*** (** *.***), all *** *** / client / ******** ***** is **** ****** ******** to ****** / *******. Connecting ** *** ****** is ****** ** *** IP ****** ************'* *** or, ************, *****. ** contrast, **** ******** ** the ****** ****, *********** hardware ****** ***** ** be ********, ***** ****** backwards ************* *** ******** support.

Disadvantages ** ******** ** *** ******

** ****** **** ********* since ***** ****** ******** the ********** ***** / hardware ** ****** ******* of **** ****** ** to * ****** ** a *** ********* / encoders ***** **** ****** encoding *** ******** *******. This ** *** ****** why ** ****** ******* are ********* ******* **** expensive **** ** *******.

***** **** **** ******** in ****, ***** ***** IP ****** ** * computer, ********** ** ******. With *** ******** ** cameras ***** * ******** come *** ********* ** computers - ********* **********, potential *** ******** *****************, need *** ***********, ***. These ****** *** ****** not ******* ** ****** (HD ** **) *******.

Resolution ******* ** ** *** ** ******

************, **** ** ****** and ** ******* ********* delivered **** ** ***** resolution. **** *** * big **** **** ** analog's ******** ********** ** VGA / ~*.* **. However, ** / *.*** IP ******* *** *** commonplace.

"**" ***/*** ******* *** now *********, ****** ***** rate ** ******* ** 15 ** *** **** majority ** *****, ** is *** "****" **, which ******** ** *** as *** *********.

*** ***, ** *** a **** ** ********** at **** ***** ****, though ************ **** *** niche ************ **** ****** need * ****** ****** with **** **** **********. Especially *** ****** ***** and ***** / ******* business, ***** ** ** often ******, ******* ******* ****.

Advanced ********: ********* **

** *** * ***** lead ** ******** ********, given **** ** ******* are ********* ********* **** cameras ******** *** *** therefore ******* *** ***** of ******** ********** (*****,******* *********, ******* ******** *******, on ***** ***** *********, etc.).

***, ***, *** *** all ***** ***/*** ******* up *** ****.*** *** *** ***** some ******** ** ** such ** */* *** two-way *****, ** ******, though ***** ******* *** these ******** ** ****.

Recorder *************

** ******* *** ** made ********** **** *** recorder ** ****** ** adding ********, ******* ** is *********** *********** ** the *** ** "*********" like*****.

** ****** ****** ***** require *********** ******** / encoding ******** ***** ****** simply ** ***** ** older ****** ****. *** recorders (** ********) **** be ********* ***** **** cameras. ************, ***, ***, and *** ********* *** able ** *** *** match ****** ** **** / *** ****** **** their *** ** ****** type.

** ****** ***** **** historically *** ********** **** each *****. *** *******, if *** ********* * TVI ****** ** ** AHD ** *** **** recorder, *** **** *** no ****** ***** (********, with *** ***** *** around).

Universal ******** ******* *** ******

***** ** *** ************ been ** *****, ** analog ************* *** ********* significantly, **** ******** ************* now ******** "*********" **** or ******** ***** ******* AHD, ***, *** ***, such ******' ** ****** ********,*****'* "*****-****" *********, ********* ********'* ********** **.

*******, ***** ****** ****** of ****** ** **********, frame ****, *** ******** feature ******* ** **** variants **** ***** ***** recorders, ** * ************ may ******* ***** ********* standard ** **** **********/***** rate, *** ****** ****** resolution ******* ** ****** or ********* ** *** coax ******* *** ***** features.

Coax Compatibility: ********* ** ******

** ******* *************** **** **** (***) Shootout** *** **** ****** coax. ***** ********* *** $100 ** $*** *** camera.

*** ***** ****** ***** are ******** ** *** over ****** ********* ******* cable, ****** *** ******** limitations ******* ****. *** and *** **** ***** "over *,***'" ***** **-** (and **** *** ***** validating **** ** ** 1000'). ** *** *****, early *** ******** *** some ****** ***** **** cable ****, *** ***** have ***** **** ******** in**-*** *.* **** ********.

*** **. ***

*** ** *** *** installation ******** ** ** cameras *** **** ***** over ******** (***). ******* of ***** *** ***** for ***** *** ******* for *****, * ****** cable *** ** **** and ***** ************ *** be **********.

** ****** ************* **** been **** ** ********* single ***** *****/*****, *** it ** *** ******** in **** ******. **** Power **** **** (***), siamese ***** *** ** replaced **** **** *****, external ***** ******** *** be ******* *** **** labor **** *** ** reduced. ************, *** ****** longer ******** ***** ************ than ***, **** ***-**** runs ******** ** **** coax **. **** ***** standard ***/***.

** ** ****, ********* has ******** **** ****** of ***** **** **** (PoC) ******* *** **** (*** *** ****), **** ****** ******** more ******. ******** ************** ****** ** ***** regions, *** **** ** North *******.

Vendor *******

** *** ******* ****** support, **** ** ***** of ****** ** ************* and ***** ** **** factors *********.

** ****** ******** **** growing *******, ****** ******* by *** ********** ***** availability.

  • *** *** ************ *** the ***** ****** *******, with **** *** **** or ** **** ****** utilizing **. *******, ************* such ** ******* *** Digital ******** ***** *** product, ** ****.
  • *** *** ***** ******* amongst ***** (*** ******* of ***) *** ***** OEMs (** ***** *******, most ********************-***).
  • *** ** ********* ** a ****** ** *********, but ** *** *** largest ** ********* (*** their ****).

Western / ******** *** ****** *** ********** ** ******

**** ** *** ******* brands ** *** ***** are *** ********** ** analog. *** *******, ********, Canon, *****, *********, *****, Sony *** *** *** supporting ** ******.

*******,** **** **** ********* their ***** ******** ********** HD ******, ****** **** *********** the ***** ** *** Western / ******** ****** to ** **.

*** **** ** ******* support ****** ********* ******* behind ** ****** ***, related, ********** ** *** technology ** **** **** to ***** ****** ************* for **** ***** **** technology ** ***.

** ********, ** ****** has **** *** ** Chinese *** ****** *************, who *** ********* ** the *** ** *** tiers ** *** ****** and ** *** ***** as **** *********** **** average ****** ** *** Western *** ******** ******.

Model ************: ********* **

** ****** ******* ********** advanced ******** **** ** true *****-******** ***, ***** low *****, ***., *** less ****** **** ** cameras **** ***** ********. Newer ********** ***** *** Hikvision ** ****** ******** increasingly ******* ******** ********, but ***** *** ***** less ********** **** ** cameras.

** *** ***** ****, many ******* ******** *** niche **** ******* *** still *** **** ****** available ** ** **** HD ****** ****** ** most ******* **** ** HD ****** ** ********* focused ** *** ****** market ***** ***** **** and **** ************* ******* are ********.

Cost **********: ********* ** ******

** ****** *** *********** cost ********** **** **, both ** *** ****** and ******** ****. **-**% lower **** *** ** analog ** ********** ****'* IP ******* ** ***********.

** ****** ***** *** now ********** ****, ******* from ******* **** ****** in *** ***** *** helped ** ***** **** Asian ****** ********* ** the **** *** *****. In ****, * '*****' IP ****** **** * name ***** ****** ****** a ***** *********** **** in *** $** - $100 *****.

***, ***, *** *** cameras *** ********* *** extremely ***********, **** ******** to ******* ***** ***** IP *******, ********** ******** ** ~$** USD*** ***** ******* *** recorders******** ***** $***.

Install **********: ********* ** ******

********** ******* ** ********* is **** ********* **** IP **** *** ** the *** ****** ********. With **, **** ****** needs ** ** *******, the ******* ***** ** be *** ** ********, the **** ***** ** know ** ** ******* the *******, *** *** VMS/recorder **** ******* ****, either *** ****** ****** or *****.

*********** ** ************ ************* will *** **** **** a ***** *******. *******, many *** ** *** traditional *** ******* ***** will **** ** ******'* "plug *** ****" ************ much ******.

HD ****** ******* *** *** ** **, ***** ***** *** ******

************ ************, ****** ******** recognition *** ********* ******** (higher **********, ****** *************) are ******* ***** ** analog ********.

** *** ***** ****, HD ****** ** ***** firmly ******* / ******** in *** *** *** of *** ******. *** lack ** ****** ******* and *** ******* ** the ******* ******* *** Japanese ****** ** ******* HD ****** *** **** it ****.

*******, ***** **** ****** functional ********** *** ** cameras *** ****** *** applications ************, ** **** storage, **-***** *********, *****-******* with * ****** ******, etc. **** ******** ** be ** ****. ************, many ****** ************ **** standardized ** *** *******. While ** ****** ******* can ** **** **** added ******, ** ******* remain * **** ******* / ****** *** *** such ******* *************.

[****: **** ***** *** first ******* ** **** but ******* ** **** and **** ** ******* availability ** ******** ******** and ****** ***********]

Comments (40)

So is "HD" the new "SD"? It seems like 1080p/2MP is the new minimum standard to replace D1/4CIF. Maybe the IP centric players like Axis need to push anything above 2MP as the offering of choice, dropping any HD labels. They could consider HD as old tech. This might give them a little bit of life over the analog HD products, if for just marketing purposes.

"So is "HD" the new "SD"?"

Yes, HD analog is killing SD analog very quickly this year. We reviewed the numbers behind this here - The Company Behind AHD - Nextchip. While there will certainly be some who use NTSC / PAL for years to come, this will mostly come from maintaining legacy systems, not for any sizeable number of new deployments.

As for the IP centric players, they could push 3MP as the new minimum. Indeed, Omnivision has new 4MP sensors that are empowering a new generation of IP cameras, unfortunately for Axis et al, Dahua and Hikvision have taken the lead there (we have bought those 4MP cameras and Ethan is testing that currently).

Worse, the HD analog folks are talking about doing higher than 1080p next year, so if that comes to pass, the resolution advantage will be further deteriorated.

I know that SD is dead, but what I meant was more from a marketing aspect, the IP only guys /could/ treat HD as dead/old/ancient if they chose to. But since analog HD isn't going to be confined to 2MP, it may be too late for them to beat that drum.

The only time I feel compelled to offer IP on smaller projects these days is when a client /really/ needs ease of playback and HDCVI still is lacking here. If Dahua could just improve their interface/playback/backup to be as simple as a good VMS (i.e. Spectrum), I wouldn't need to leave the HDCVI world very often.

Well Spectrum, i.e., DW is just starting to release their own HD analog (AHD) offering, so there is that as well to consider.

Jon, I agree. I see a lot of manufactures still using the HD logo on their 720p cameras (even in 2016). Wow... Big deal... We need to stop using the HD logo to hide 720 making people think it is 1080. And don't get me started with calling a 1280x1024 camera 720p... You are dumbing down the image for 16:9, usually for no reason...

I do see 1080p as being the minimum resolution that most big manufacturers are putting out for IP or HD analog products.


I personally thing that 4Mp will be the "new" 1080, and then 5Mp > 4k > 12mp being the new premium standards...

720p should be called HD ready like 720p TVs. They will be dead soon I hope, like noone buys 720p TVs any more, only FullHD.

HD Ready doesn't mean 720p. It meant the TV was HD capable, but no HDTV Tuner was built in.

Ethan,

Thanks for posting this. It's very useful. One point: On the 960h just being a stretched out D1 picture, that is only true if one is using a D1 camera on a 960h recorder. If you use a camera that puts out a real 960h signal on a 960h recorder it is not stretched at all. Conversely, if you put a 960h camera on a D1 recorder the picture is squeezed and subjects look like the cowboys riding off into the sunset during the credits of an old western movie (tall and thin). With the HD analog formats this may not seem inportant but we have found that we have gotten a much improved picture with the 960h format when replacing old analog cameras and recorders. Plus legacy equipment such as a matrix and distribution amplifiers will pass the 960h signal perfectly. If the analog HD formats would pass through a matrix (they don't) I would be using them already.

If you use a camera that puts out a real 960h signal on a 960h recorder it is not stretched at all.

Believe it or not, at least in the early days of 960h some manufacturers actually screwed this up, and the picture would be stretched even when using 960h with 960h. Because of this sloppiness by a few, 960h has gotten a reputation as a scam and pure marketing.

When, IMHO, it's not. It's actually a quite clever way to get more resolution out of a limited NTSC signal.

It's often thought that 720x480 is a limitation imposed by NTSC on the upper bounds of resolution*. This is only half true, since only the 480 vertical limit is set in stone, originally indicating the number of electron gun sweeps necessary to render on a CRT. But the horizontal is bounded only by what ever you can modulate. In broadcasting no one actually ever did more because of the limitation of the color mask in CRT's, which physically restricted the resolution to accommodate color displays.

The absence of this mask is why some high end B+W CRT monitors can boast 1000tvl on 'real' NTSC.

Anyway, since there was unused available bandwidth in NTSC, but only in the horizontal analog signal, Sony created a sensor which took advantage of this by creating a sensor with 960 horizontal pixels but only half that many vertically, 480. Most importantly, they used the same 1/3" 4:3 sensor dimensions as the 720x480 sensors, in effect creating non-square pixels. Ones that are tall rectangles. This is easily verified by checking out a given camera sensors resolution vs it's physical chip size.

All this cleverness though has a risk that when displaying the raw pixels one must either 1) display them on a monitor with non-square pixels (no one does this), or 2) interpolate the pixels back to a squarer aspect ratio.

Failure to do this results in a stretched picture, as all the 960 horizontal pixels are displayed as if they represent the same amount of width per pixel as the vertical ones represent length.

It's all (almost) water under the bridge, but I think this was a neat trick in Sony's part, and should be remembered for what it was.

*720x480 is actually part of the agreed upon standard of how to digitize a D1 picture, namely ITU-R BT.601.

How does 960h give you a much nicer image? It may give you a little more width in your scene, but it doesn't add usable resolution over D1/4CIF?

On a purely quantitative basis, a 960h sensor typically has > 100,000 pixels more than a D1 sensor.

Correctly rendered it isn't any "wider", since the sensor is the same physical width in both cases.

Are you referring specifically to DW's implementation?

Forgive me if I'm wrong, but isn't 960h just a widescreen version of D1? 16:9 vs 4:3?

No. They are (AFAIK) both using 4:3 1/3" sensors. The FOV is therefore the same.

The thing is that 960H crams in 240 more pixels in the horizontal direction than D1, but having the same number in the vertical, 480.

The way they do this is by making the pixels themselves narrower, so they are elongated rectangles instead of squares.

If you then show such an image dot-for-dot on a monitor, it will appear wide. If instead you correct for the pixel aspect ratio by re sampling you get a final image of ~960x800, which has all the added horizontal resolution, but really only 480 scaled to 800 in the vertical.

This re sampling is what the 960H Dvr needs to do. But even in the wide "stretched" renderings of the image, the added resolution is still there.

Each pixel in the image represents one pixel from the sensor.

Check please 3 things:

1. AHD now support also PTZ and camera settings (OSD) over coax

2. Never met TVI cameras with support two way audio

3. AHD works well through UTP cable without baluns - checked with 5E cable, cross section 0.46 mm2, 200m length, 720p cameras, picture is suitable, almost without quality losing

I've added a point about AHD supporting up the coax control, thanks.

As far as TVI cameras with audio, I'll agree with you. I've never seen a camera that includes it, either, but it is technically supported by TVI. My guess is that audio is not a heavily requested feature in the segments TVI cameras are typically made for.

3. Curious, what do you mean "works well through UTP cable without baluns"? How are you connecting to the UTP cable without a balun? Does the camera have UTP output?

We have not tested any current generation AHD yet, so I can't comment on quality. I believe we may test Samsung's commercial AHD line when it arrives, but not sure on timeline.

How do you know that TVI technically supports audio over coax? Last CPSE 2015 we asked Hikvision engineers to prove it this point, but they failed. May be there is lack of technical datasheets and detailed specifications of any HD analog format, but it seems that some features exist only in advertisement materials.

Also, Nextchip engineer told about huge video quality losses and interference when they tested audio over coax in AHD. Transmission distance of suitable signal was dramatically decreased. It was over of the reasons why they declined this function.

3. To test audio through UTP we used usual BNC connectors with BNC male and screw terminal. It looks strange, but it works. This feature is also built-in technical opportunities of all HD analog formats.

CVI certainly has audio, like this model.

TVI may not have copied that part of the spec from Daniel/Dahua, but now with the reconvergance of HD 3.0, I would expect they will.

Related: The Real Inventor Of HD-CVI And HD-TVI?

AHD works well thru UTP cable without baluns - checked with 5E cable, cross section 0.46 mm2, 200m length, 720p cameras, picture is suitable, almost without quality losing.

Have you done a side by side of with and without baluns?

I would imagine that the signal would degrade noticeably by 200m. Even with baluns it is worse (slightly) than coax.

Category cable has a characteristic impeadance of 100 Ohm, RG-6 coax is 75 Ohm. That means a lot of reflections (ghosting) and attenuation thru cancellation.

Did you use one single pair, one split pair, or multiple pairs?

I know about impedance difference, and I know that we didn't use terminating resistors and other ways to match resistance up to 75Ohm

But I can share images of original signal and long distance one .

We tested all types: if use single pair, maximum transmitting distance is 100m. Is twisted pairs - 200m is suitable, but has noticeable losses. For multiple pairs (2x2) result was really fine for 200m for 1080p camera. For 720p and multiple pairs result also was suitable for usage.

Very informative with power over coax.

While you get longer transmission distances using coax, isn't coax cable much stiffer, thicker, more expensive, and more difficult to install?

It most often is; however consider the 'per unit length' cost of longer than 100 M, more expensive RG-59 is still less than a 'fully commissioned' cost of a UTP run to the same length, given UTP requires active 'hops' in the form of additional devices like switches, midspans, extenders, etc.

In some cases, existing coax cabling can be reused 'in-situ' for HD analog, while IP would require converters to use it, or likely just a whole new run of UTP instead.

Beautiful information about Analog Camera.

Is anyone out there currently deploying any HD analog at scale? I know HD analog has had better traction in smaller system deployments. I am really curious if anyone has deployed a large system of all HD Analog. 

I have done a few, but mostly on budget-customers, sometimes I take the least important cameras - in lack of a better way to call them - and use a TVI recorder as “encoder” and then view and record the cameras through a VMS, even with the VMS licenses this works cheaper than full IP

I really do think that there is an opportunity for HD analog to make a huge wave. The thing that is against it off course is the fact that everyone that purchases for daily use mostly only knows IP as a transition from analog as the next step. Alot of marketing dollars have been spent in N. America in influencing this market transition. IMO their are so many positives as well to using HD analog. Im still waiting on someone to perfect the right HD analog encoder product, not just another embedded HD analog DVR using RTSP to connect into a 3rd party system.

When my customers say to me what are the main advantages for me buying a more expensive IP camera over a analog camera for the install i always think i'm explaining it well but maybe not ?? 

 

How do people justify the cost to customers ? Hikvision POC 2MP ultra low light is £26pounds !!! and its not bad to be fair 

 

I am surprised that stakeholders are not reaping 2/3 cost savings in equipment and licensing, hence I am building a business model based on utilizing this. I even tried introducing this concept to my previous employer that could have used it's enormous resources to provide a whole product line, but my delivery tactics need refining. Out of frustration of that and many other things that come with overweight mega corporations, I quit without proper notice, burning a bridge along the way. I think I did it subconsciously to force my own business to succeed.

I think one of the main reasons HD-Analog is not more commonly adopted is fear of Chinese malware. I wish an American Company would use the encoder chip set in their own native hardware for DVR's or even PCI card for Dell/HP servers.  I think the 1st one to do so would have great success.

I think one of the main reasons HD-Analog is not more commonly adopted is fear of Chinese malware.

Cary, I don't think that is the case since HD-analog overall has a lower 'footprint' for cybersecurity vulnerabilities since the cameras are not IP, just the recorder.

The bigger thing I have seen from talking with Dahua and Hikvision representatives is that they overwhelmingly lead with IP. Even when I randomly go up and ask what's new or what they recommend, IP is almost always first and even when I specifically ask about HD analog, their response is typically lukewarm.

Cary, I don't think that is the case since HD-analog overall has a lower 'footprint' for cybersecurity vulnerabilities since the cameras are not IP, just the recorder.

i don’t think, in practice, that HD-analog really has much of a lower cyber footprint.

take a typical Hikua 16ch dvr w/analog cameras vs a 16ch poe nvr w/ip cameras.  the ip cameras plug directly into the nvr and are on their own network.  they can only be compromised if the nvr is, just like HD analog.

there are of course many Hikua non-embedded nvrs, but I think that the embedded ones are more comparable to the hd dvrs.

also, though cameras and firewalls can be poorly misconfigured, the nvr/dvr is the device that is intentionally exposed to the internet, making the most likely entry point regardless of camera technology.

Great article and John Honovich you touch on the topic slightly in your comment back in Jan 23, 2019 but are there security vulnerabilities with Hikvision and Dauha Analog HD lines or is that mainly for the IP side of things? 

There are vulnerabilities on their DVRs but not the analog cameras that I am aware of. Essentially as the camera does not have a network connection nor the processing power to run the Linux based fw like an IP camera, it is not hackable.

I have both CVI and IP cameras in my network, the biggest issue for me with the CVI is they have to be run back to the recorder, IP cameras can just be run to the nearest switch but the CVI cameras need home runs - I have not added any CVI cameras since the initial install but I have added a number of IP cameras. 

Anyone used the new Axis encoders yet? I can't find them on their website.

They aren't yet released. Their original release date was Q3 when we spoke to Axis. We plan to test as soon as they're available.

1) it is not significant but nowadays more monitors are available with HDA input 

2) still some customers require non-network video transmission without any loss nor delay - critical applications.

3) video door phone systems now are available with 1080p HDA.

It would be nice to have an analisys of video signal HD.As far as i know 1080p TVI used the same bandwidth of CVBS up to around 4 Mhz .The upper part of the band that in CVBS was used for color burst in TVI is used for PTZ.That gets to the importance of cable quality.With cheap (or old ) RG59 i have personally experienced color loss and lack of PTZ  with TVI cameras

Luca maybe that 4MHz it is just your typo - band for all those analog systems finish on about 30MHz, if talking about products over 1080p than you have to talk about freq up to 70MHz. System was generaly developed for basic RG59, so yes, cable should have some basic quality, but it is realy far from anything you can know from RF industry.  Regarding data communication like PTZ - they are not in color burst definitely, they are pulses in interframe space. So data communications can be just relatively slow. So if you have problem to control camera using PTZ commands problem is somwehere else then in cable freq range. (even I met some devices can blok PTZ com only, like some kind of ground loop isolators).

 

I see.I was told by people from Hikvision that HDTVI 1080P signal used the same bandwidth of old CVBS around 5 Mhz (4.5) and the upper part of the frequency was used for PTZ transmission.That is because with that frequency the tipical attenuation of RG59 and bandwidht restriction would not affect

I took it for granted.Now ,doing a little bit of research over the internet , i see totaly different frequencies (around 50 Mhz and so on)just as you say

So it's Always time to learn something new

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