Dahua 4K Turret Tested Vs Hikvision (N84BG44 )

By John Scanlan, Published Aug 02, 2017, 01:18pm EDT (Research)

***** *** ******** ***** ****** *** cost ** *****, *** *******, ******** Smart *.***+ *** *** ** *****. We ****** *** ****** **** *** model ******* *********'* ****** *** **** ** ****** ** *** *** ** ******** **:

  • **** ***** ******
  • ** ***** *** ********
  • **** ******* *****
  • *********
  • ************

*** ****. *** *** **** ******* inside.

****: ***** *** *** ** *** first ************* ** ******* * *** cost ** *****,****** ** **** ** ****. *******, **** ***** *** ***** been ************ *** ********** ** **** new **********.

*******

** *** *****, *** ***** ******* lagged ****** *** ********* **** ** low ***** ***** *******, ** *****, and WDR ***********.

*******, **** ***** ***** ******* *** noticeably ****** **** *** ****, *** IR ******** ******* **** ****, **** no ****** ************ *** ************ **** across ****** *** **** ***.

*******, ************ *** ** **** *********** than ********* ** ***** ****** ****** as *** ****** **** ** ************ from *** **** ** ******* (*** necessary **** ***** *************). *******, **** users *** **** **** **** ****** as ******** ******** ** ******, ***** it *** ** ******** ****** ** Hikvision ******.

*******

*** ***** ******* ** ****** ********* to *** ********* ****, ********* ~$*** *** ****** (****** **** ******* **** *** ****** for introduced ** ****** ** **** ***** point.

Physical ********

*** ***** ** ****** ** ******* in ************ ** ***** ****** ******, such ** *** ********* ***** *****. 

*** ****** ** ********** ******* **** others *** ** *** ******** ** its ******** ***** ****** *** ****** instead ** *********** (***** *****), ***** presents ******** ************ ****** ********* *****.

Installation ******

***** *** *** *** ************ *********** between *** ***** ****** *** ******:

  • ******** ***** *********: ***** *******' ******** holes *** ********* ***** *** ****** body, ******* **** * ******** ***** must ** ******** *** *** ****** disassembled ** ****** ****. ** ********, Hikvision *** ******* ****** ******** ***** are ********** ****** ** ******** * trim **** ** *** ******* ** the ******. 
  • *** ***** ********: *** ***** ****** may ** ************ ****** ** ********* a ****** *****. ** ********* ******, a ********* **** ***** *** ****** shroud ** *** ****.

******* ** ***** ******, ***** ******* may ** **** ********* ** ******* as ******** ******** ****** **** ** handled, *** **** *** **** ******, as **** ****** ** ********* **** the **** ******* ************* *** ******.

** ****** ***** ****** ** **** video:

Even ************/************* *****

*** *******'* ************ ******* *** ****, illuminating ***** ** *** ***** ** the *** ******* **** ******* ************. 

*******, *** ******* *** *** **** close ** *** ********* *** ** range, **** *** ****** **** ** even ~***', ***** *****.

*** ********** ***** ***** *** ** pattern ** **** *******, **** *** Dahua ******, *** **** ****, ***** Hikvision has * *** ****** *** ****** edges.

Low ***** ***********

******* ** *** ****** ** *** Dahua ******* *** *** ****** **** the ******** ************ **** ** *** Hikvision ****, *** ******* ******* **** slightly ******** ** ********* *****.

******* **** *** *******, ** ~**' distance/~40 ***, *** ****** ** ** *** Dahua ****** ** **** **********, ** the ******* ** **** ********* ** discern ** *** ***** ***** *** still ******* ********* ** *********.

*******, ** ~**' ********, *** ******* is ********* ** ****** ** *** Dahua ** *****, *** ***** ********** easy ** *** ** *********.

Edge ** ***/**** **********

** ********* *** ***** ** ********** at *** **** ** *** **** we ****** **** *** ******* ** the ****** ** *** *** ** well ** ** *** ****. *** image ***** ***** ***** *** ******* was ********** ****** *******.

*** ********** ***** ***** ******* ******* at *** ****** *** **** ** the ****. ** *** *****, *** ******* is ********* ****** *** ****** ****** and ******* **** ** **** ** the ******, **** **** **** ** ****** on **** *** ******* *** **** chart.

**** **** ** ***** *** ******* lens ******* ******* *** *** ******* in **** ****, ** ***** **** a *** **** *** *** ********* 2385 *.***. 

Full ***** ***** *******

******* ** **** ***** *** ******* in **** *******, *** ******** *** moderately ******* ******** ** *********.

*******, ** ******* *****, ~**', *** Dahua ****** ******** **** ******* ****** of *** **** *****, **** ********** to **** * **. * ** the ********* ****.

 

WDR ***********

** **** *** ***********, ** **** the ******* ** *** **** ******, warehouse ***** **** **** **** *** more ******* *****/**** ****.. **** **** the ***** ** ****** ******** ******* WDR ***** *** ********* **** ** a **** *** ******.

*****, ** *** ********* *****, ***** levels ****** **** ~**** *** ******* to ~*** *** ******.

** **** *****, *** ******* ******* similar *********** ******* *** ***, **** the ********* **** ****** * ****** advantage ******* ****** *********, **** ******* displaying ********** *******, *** ******* ******* details. ** *** ****** **** ****** the ****, ******* *** ******* *******.

***** ** ** **** ****, *** Dahua ** ****** ******* **** ******* overexposure ** *** ******* ***** **** outside ** **, ***** *** ********* camera ***** * *** ******* ** adjust, **** ***** ****** ******* ** the *******.

Bandwidth **********

*** ***** ******* ******** ***** *.***+, the ****** ******* *******'* ***** *****. *** ** ******'* ******** **** competitive **** *********'*, ********** ***** ** a **** *** ******* *****, *** moderately ****** ** *** *****. *******, **** that *** ******* *** *****'* *.*** stream ** ******* (*** *****). 

***** *.***+ ******** **** ***** **** Smart *.***+ ** *** ****** ******, by ****** **% ** ******* ******, and ~**% ** *** *****.

VMS *******

** *** **** ** *******, * number ** ***** ***** ******* *.*** *** not ******* *** ******* (*****, *******, and *********). **** ******* *** ********* list ******* *** ***** ***** *.*** cameras, *** **** **** **** ** utilize *.*** ******* ** *** *****. Exacq **** *** **** ******* *** any ***** *.*** *******, *** **** H.265 ********* ****** ******* ****** (****** VMD, ****** *************, *** ***** ******** are **** **** ***** **).

Test **********

*** ********* ******* **** **** ** this ****:

  • ***** *******: *.***.***.* ***** ****-**-**
  • ********* **-**********-*: **.*.* ***** ******

Comments (5)

Maybe I missed it but I didn't see any mention of the built in mic? I was curious to see how you rated the quality of the audio and if it works with any of the VMSes. We have only installed them with Dahua NVRs and have little experience with other audio surveillance (except for a single omni directional Louroe mic we did a few years back) for comparison. 

Agree
Disagree
Informative
Unhelpful: 1
Funny

I have hear the mic on a 4MP camera on a 4K TV, it sounded very good...also when played back through the NVR audio was clear if this helps

Agree
Disagree
Informative: 1
Unhelpful
Funny

Smart H.265+ bitrates were lower than Smart H.264+ in all scenes tested, by nearly 70% in daytime scenes, and ~40% in low light.

H.265 finally delivering > 50% savings over H.264?

Agree
Disagree
Informative
Unhelpful
Funny

50% is not totally uncommon. Hikvision's H.265+ was reached 50% in some cases, as well. 

I wouldn't make a blanket statement that it's always 50% lower than H.264, but it's possibly that low in some scenes.

Agree
Disagree
Informative
Unhelpful
Funny

Our experience has been that the 8mp turrets were coming in consistently between 40-60% lower bandwidth usage on h265 than the 4mp models on h264

Agree
Disagree
Informative
Unhelpful: 1
Funny
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