Multicasting Surveillance Tutorial

Author: IPVM Team, Published on Jan 04, 2018

Network bandwidth can be a concern for some surveillance systems. While improvements in video codecs, such as smart codecs for H.264 and H.265, have reduced bandwidth needs significantly, large systems still encounter issues with large amounts of video data and viewers. In this note, we look at the basics of multicast networks, a frequently-mentioned means of reducing bandwidth, where they will save bandwidth and where they will not.

Inside we explain:

  • The Basics of Multicast
  • Use in Surveillance
  • Unicast / Mulitcast Combinations
  • Network Support
  • VMS Suppport
  • Quiz Yourself: 5 Question Quiz to measure knowledge of Multicast for Surveillance

This is one of many tutorials on networking for surveillance. Others include: Wireless Networking for Video Surveillance, Network Addressing for Video Surveillance, Bandwidth Guide for Video Surveillance, Remote Network Access for Video Surveillance, Network Monitoring / SNMP for Video Surveillance, and more.

******* ********* *** ** * ******* *** **** ************ *******. While ************ ** ***** ******, **** ******* ****** *** *.*******.***, **** ******* ********* ***** *************, ***** ******* ***** ********* issues **** ***** ******* ** ***** **** *** *******. ** this ****, ** **** ** *** ****** *******************, * **********-********* ***** ** ******** *********, ***** **** **** save ********* *** ***** **** **** ***.

****** ** *******:

  • *** ****** ** *********
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  • ******* / ********* ************
  • ******* *******
  • *** ********
  • Quiz ********: 5 Question Quiz to measure knowledge of Multicast for Surveillance

**** ** *** ** **** ********* ** ********** *** ************. Others *******:******** ********** *** ***** ************,******* ********** *** ***** ************,********* ***** *** ***** ************,****** ******* ****** *** ***** ************,******* ********** / **** *** ***** ************, *** ****.

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

The ******

** ***** ** ********** *********'* *** ** ************ ************, ***** should ********** *** ******. ** **** ******* ******* ************, ******* transmission ** ****. ** **** ******, *** ****** ******, **** as ** ** ******, ********* ** **** ****** ** *** video **** ** *** ********* ** ************. *** **** ******** of **** ** ************. ** *** ****** ** *** ** a * **** ****** ****, *** *******, **** ******* ********** video **** ******* * **** ** *********. **** ***** *********** unicast ************ **** *** ****** (***) ** ***** ********** (*****):

** ********* ************, *******, ***** ** ** ****** ********** ******* the ****** *** ***********(*). ************, **** ** ************ *******, *** joined ** * ********* *****, ***** ******** * ****** **** of *** ***** ****** ***** ** ********** ** **** ******. So **** ******* ********** * * **** ****** **** **** use * **** ** *********, ******* ** *** * **** used ** * ******* *******. *** ********* ***** *********** ********* transmission **** *** ****** (***) ** ***** ********** (*****):

Use ** ************

********* ** ***** ***** ** * ****-**** ********** ** *** surveillance ******. **** ** ****** *** *** ****. ** ******* with * ******* ****** ** ************, **** ** *** ********* server *** *** ** *** ******* *******, ********* **** **** little *********. ****, ** **** *********** **** *** ********* ** a ******, *** ** **** ***** **** ** **********, ** the ******* ** ****** * ********** ** ******* *******. ** cases ***** ********* *** ******* *** ******** *******, *** ** the ******, *** ** *** ******, ** ********* **** ** saved, ** **** ****** ** **** ***** **** ** *** destination.

*******, ** ****** ***********, ***** * ****** ****** ** ******* are ****** ** * ***** ****** ** *******, ********* *** be ********. ** ********* ** ********* ******* *******, *** *******, half * ***** ******* *** ** ********* **/*, **** ********** occasional *****. ****** ***** *** ***** ****** ******** ******, ** well.

Unicast/Multicast ************

** **** *****, *** ******* *** ** ******* ** ****** in * ******* ****** *** **-********* ** ** ********* ** clients. **** *** ** ****** **** ***** ******* ********* *** means **** ***'* ******* *********, **** ** **** ******** ***** or *** ***********. ** **** ****, *** *** ****** ***** a ****** ********** ** *** ****** *** ***** *** ****** out ** ********* ** * ******, ******** *********. ** ***** cases, **** ** * ****** ********** ******* * *** ***** does *** ******* *********, *** *** *** ******** ***** **** multicast ******* ** * ******* ******. ***** ******** *** ********* limited ** **********-***** ****, *******.

Network *******

*********** ************ ********** ** ***** *, **** ** ******* ***** ** 224.0.0.0 ** ***.***.***.***. *** ********* ***** *********** ********* ************* ** an ** ****** ****** ****** ************ *** ************* ******* *** vary ** ************.

********* ******** ******* **** *** ********** ******* **** (******** ***** Management ********), ***** ******* *** ******* *** ******* ** ********* groups. **** ** ********* ** ****, ** *** *** ******* switches *****. *** ***** ***** ***** * ***** ****** *** the ******** ** ***** ********* *** **** *** *** ******* ports

*** ******** ** ****** ************* ******* ********* *********, ** ****. VMS ******* ** *******, *******, ** ***** *****.

********* ******** ** *** ********** ** ************ *** ***************. ******* networks *** ** ****** ******** ** ***** **** ***** ******* experience, ** *** **** ******** *** *** ****** *** *********** addresses. **** *********** **** ** ****** ** ********** ******* *** client ********. **** *****, ********* ** *** ******, ** ****** beyond *** ***** ** **** ***-***** *****' ********, *******. *************** is **** ** ****** ** ****** ** ******** * ****** source ******* *** *********** *******, *** ** *** ******** ** multicast ******, ***** *** ********* **********. ******* **** **** *** number ** "****** *****" ******** (*******, *******, *******, *** ********), all **** ***** *** ********* ************** *** ********* ******, *** multicast ** **** **** ** *********** ** *****.

VMS *******

**** ***** ****** ************* *** ******* ********* *********, ******* **** of *** ***** *** ********* ** ***. * ***** ***** of *** ******* ***** *** ********* ********* ******* **** ****:

**** *****, ***** ********* ** ******* ** ****** *** *** depend ** * ****** ** ********** **********, ** ******** ****** checking ******** ********* ********** ** *** **** *** **** ** is ** ****** ********* **** **** ********* ***.

Test **** *********

***** ****** **** * * ******** ****

Comments (63)

*** ****** **** ******** *****'* ******* ********* *** ***** ** settings ** ****** ********* ** *** *******. **** ****** ********* recording ** ******** *******.

"VMS *******

** *********, *** ***** ************ ******** *********.**** ***** ****** ************* *** ******* ********* *********, ******* **** ** *** ***** *** ********* ** ***."

**** ** ***** **** **** **** ** *** **.

** ******** ******** ************ ** *** ****** ** ****** **** when *** **** ** ****** ** ******** *******. **** *** not ******* ************ ** *** ******* *** ************ ** ********* on *** ********* ****.

"**** *** *** ******* ************ ** *** ******* *** ************ is ********* ** *** ********* ****."

****?

***... ************ ** * ******** ******** **** *** **** ***** streams *** ***** ********* ** ******** ******* **************.

*** ******* ** ****** ********* ******* ** *** ********* ********* is * ********** ********, *** * '********** ******** ************ ****** requests *** *****' ********...

** ** *** **** ******** ******* ********* ******* **** *** same ******* *** ** **** ********* **** ******** ******* ********** streaming **** *** **** ******? ******* **** ****** **** ****** are ******* ** *** ****** *** ** *** ******* *** recording ** ******** ******* ************ **** ****** ***** ** ******* multiple ******* **/*

*******:

*** **** * ******* ***** ** ************** ****** *** **** cameras. ** **** ****** ** ***** *** ***'** ***** ******* that ***** ** * ***** ** ****** **** *** ****** to *** ****** *******? ** *** ***** ********* **** *** would **** *** ***** **** *** ****** *****?

* ***** **** *** ** **** ********** **** *** ******* to ************** ****** *** **** ****** ****** ** ******** ********* might ** * **** *****.... *** ***** *** ***** **** in **** **** **** **** *** ** ****.

*** **** ****** ** * ******** ** *** ******** (*** lack *******) *** ********* ********* ** ************ ************.

********* ********* ***** ******* * ********* *********** (********* ***** * switches ** *********** *** ******** **********) - *** ************, ** least ** ******* ** *** *** ** ** ****** ** educate ******* ** *** ****** *** ***** - ** * 'multiple ************ ****** *******' ********.

******... ** **** ******** ******* ** *** ******* ************?

********* ********* **** ******** * ******** ******** **** ******** ************ (level * ********) ** **** ** *** ************ *** ** - **'* ********* **** **** ***** *** ******** ************* ** work.... ** ***** ****'* ** **** ** **.

*'* **** ** **** **** ****** ********** ****'* **** ** say ** **** *******.

** ************* ** ************ ** ** ** * *** ** many ************. ** ***** *** **** *** ** *** **** clients ********* *** ****** ** ******** ********* ********* *** ******. So * ** *** **** * ***** **** *** **** redundant ********* ***** *** ********* * ****** ********* ********** **** a ****** ***** *** ** ********** ************.

** ************* ** ************ ** ** ** * *** ** many ************.

**** *** ** **** ************* *** *** ************ *********** ** multicasting (**** **** ** ***** ***) *** ********* *** ****** viewing (****, ***** ************, ***.). ****, **** **** **** ***** multicasting *** *********** ** **** ******* *** *** ************. **** essentially ******** **** *** ******** ***** ***** ********** ************, **** mean ** ******* **, ** *** **** *****, ******** ***** to ** ******* ********* **** * ********* *********** ***** **** the ******* *** **** ****** *** **********.

* ** ********** **** **** ******** ***** ** * ********* category *** **** ***** *****. *** ** *** **** ***'* support ************ ** *** ** *** ****.

** *** **** *** ******** ******** *** ******* **** *** the **** ** ******** ** *** *** **** ********.

**** ** *** **** ******** **** ******** *******, ******** ******* , *** *** ****

**** *** *** **** **** *** **** ** ***** ** extra *-** * ** ******** , *** ****** *** *** to **** ******** ****.

*'*** *******....

********* ********* ** ********* **** ** ** ****** **** (********* because ***** *** **** ** ***** ********** ********* **** *** much **** ****** ********) ** ** *** **** ** ***** mentioning.

*** ********* ******* ********* ********* *********** ** ***** ** '***** ******' ** ** ** *** exactly *** **** ***** *************.

************ ** ****** **** ** ************ ************ ******* ***** ** no **** **** ** **+% ** ********.... *** **** ***** is * ****, ** ** * ********, *** ************, ****** stream ******* ********.

****** ******.

******** ******* *** *********.

******** *** ******.

"VMS *******

**** ***** ****** ************* *** ******* ********* *********"

**...

"****** ******.

******** ******* *** *********"

*** *****.

**...

...**** ** *** ***** *** **** ** :)

...*** ************, ** ***** ** ******* ** *** *** ** is ****** ** ******* ******* ** *** ****** *** ***** - ** * '******** ************ ****** *******' ********.

**** ******* * ***, ******* **** ******* *****-******* ***** ******* ‘multiple ************ ****** ********’. *** ******** ******** **** ******* *** live ****** ** *** ***** ********.

** *** ********* ****** ** *********** *** **** ******* *** delivering **** ** *******, ********* ********** ** *** *** ***** come **** ****. * ******* ********* *** ******* **** ****.

** *** ******* *** ******* **** ******* ******** **** *** cameras, *** ******** ******* ********* ********** ******** *** ****** ** encoding, **** ************ **** *** *** ***** *** **** **** play. * ***** *** ********* *** **** ************ **** ***** a ************* *** ******, (**** ***** *** *** *******) ******** a *****/*********** ***********.

*'* ********** ** ******* * ******** ***** ************ ******** ************ video ***** ** *********.

********'* **** ********* ***** ***** ** ****** ***** ** *** profiles **** ** *** ********* ******, ***** **** ********** ***** profile ** **** ** ******. ** ** **** ** ********; the ******* *** ******* **** ******* **** *** ********* ******, Avigilon ***'* *********, **** ******** ******* ***** ******** *** ********* between ********* ****** *** *******. ** ***** ** *** ******* actually **** **** ******* **** *******, *********** *** ******* ********. In **** ********, ************ ********** ** *** *** ***** ** unnecessary.

***** ******* **** ******** ***** *******, ******* *** *** ** my **** *** ** ****.

"** ***** ** *** ******* ******** **** **** ******* **** cameras, *********** *** ******* ********."

**** ***** ** *****.

* ***'* **** ******** ******** **** ******** ****** ******* **** ******* ** *******. Cameras (**** ***** **** *** *****-******) *** ********* *** ******** to ****** ** ******** ***** **** *********.

******* *** ******** ***** ******** **** ******* ** *******. ** can **** ********* **** *** ****** ** *** ******, ** others **. **** **** ***** ** ** * ******** ******* here (****** **'* * ****** ***** ***********).

********** ** ******* **** ** ****, *** *'* **** **** ******** **** ****.

* ***** ********* - ************ **** *** ****** ** *** client ** ************ ********* ** **** ********... ****** *** **** info *****.

********:

** **** ****-***** ********* ***** *** **** **** ******* ** stream ******** ** **** ******?

*'* *** **** **** * *** ***** ** *** ************ - *** ***** ****** **** *** **** ****.

*** ** **, *** *** *** *** *** ******** (** combination ** ******** *** **********) ** *** *****-******* ******* ** the ******? *'* ********* *******.

****: * **** **** ** ***** * ******* **** **** webinar ***** ****** * *** ** ***** ******* ***... ** that **** ***** ***** *** ******* *** **** ******* ***** be ****** ** ******, ** ** ****** **** **** ********* than * ***** **** **.

** **** ****-***** ********* ***** *** **** **** ******* ** stream ******** ** **** ******?

*** *** **** ******* *** **** ** ********* **** *** server ** *** ******, ******* *********.

*** ** **, *** *** *** *** *** ******** (** combination ** ******** *** **********) ** *** *****-******* ******* ** the ******? *'* ********* *******.

***** ** ** ‘***** *******’ ****** *** *** ******, ***** from ******* ********* ***** **************, ***** ** ***** **** ******* already **** *****-**.

*** *********** **** ** *** ***, *** * ***** ******* **** to *** ****** **** * *** ***** *********.

** **** ***** ******, * *** ** ******** **** ******** actually **** **** (**** *******), *** **** ****** ****** ** is **** *** ********* *********, ********* *** ************* *.

"*** *** **** ******* *** **** ** ********* **** *** server ** *** ******, ******* *********."

**** ******* **** *** ****** ** *** ***** ********, **?

*.*. ** *** ****** ** ********* ** *** ******** - and *********** ** ****** ******** ** * ******, **** ***** ** no ******* ********* **** *** ******, *** *******, ********* *********.

* **** ***** **** ***** * ******** ******** ***** ******* the **** *** * ****** ** ****** ******** ** *** client (******* ** **** ******* *** ****** ** *** ********) - *** * **** ***** ***** ** ****** ********* **** function, *** *** ***** **** **** ** **** ** **** conclusion.

**** ******* **** *** ****** ** *** ***** ********, **?

*.*. ** *** ****** ** ********* ** *** ******** - and **** **** *** ** ****** ******** ** * ******...

**, **** *** ******** *** *** ******* ***** **** *** same ****** *****-**** ******.

****** **** ********** *******, *** ***** ********** *** **** ***** at ****** ******* ******* **** ****** ** *** ******* ********.

*** ******** ***** *** ***'* ****** **********. * ********* ****** where *** **** **** ** **** ** * ***** ******** of * ****.

* ********* ******* ***** ** *******. **** **** **** ** cameras *** ******* ** *** ********, ** **** **** ********* to ***** *** ******. **** ***** **** ****** ***** ** watching *** **** ****** *** **** ***** *** **** *******, with ********** ** ******** ** ******.

*****. ***** *** ******* **** *** **********, *** **** ******* without ******.

** ***** ** ******* ** ******** *** ***** ** * understand ***** ***** *****. *** ******* **** ***** ******* ** the ********* ******, ** **** ******* ***** ****** ** **** to ******.

**** ***** **** ********* ******* ** ***** *** ** **** advantage ** ****** ********* ** ******** *******.

*** ** *** *** ********, ************, *** ********* * ****** streams ** *** ******, ***'* **** **** *********? ***** ** typically, ************* **** ******* **** *******.

*******

* ******* **** ************ *** ********* ******** ** ********* *** demand ** ******** ******** ** *** ***** *** ***'* ********* the ****** *******. **** ****** ** ** ********* *******.

**** *** **** * ******, ****** ***** ** ********* ***** the ********** ** *** ***** **** **** ** ** *********, in *********, *** **** **** ***. ** ** ******, * am *** **** *** **** ***** **** **** **** *** multicast ****** *** ******, ***. *** ********* *** ******. ****** they *** ******* *******. **** ** ***** ** *** ****** and ******.

**** ******** ****, *** ****** ******* * ******* ** ********* resolutions, *** ********* **** *** ************** ** *** ********* ******. The ******* *** *** ************.

**** ****** ** ****** *******

* * **** ******

* * *** ******

* * *** ******

****://********.***/*****-******/*******-*********-**********-***-****-**********-*******/

*** *** **********multi-stream ******** capabilities (Avigilon's HDSM, FLIR's Adaptive Streaming) with multicast functionality.

***** *** ****** **** ** *** ** **** ******....

***** *** ****** **** ** *** ** **** ******....

*** *** ********** *****-****** ******** ********* **** *****.

***** **** *** , ***** **** ****** ****** , ******* to ***** ******, *** ****** ** *****, ***** **** *** and *** ** ***** *** ***** ** *** **** ***** of *** ******* ** ** *** ** ****** **** ** not ******.

***** **** **** ***** * ****** ***** **** ****** ** had ** ****** ****** , *** ******** ********* , ****** event ********* *** *** ** ***** *** ***** , **** we **** **** ** ******* *********

****** ****** , ******* ****** *** ****** ********** ** ****** , *********** **** **** ***** **** , ***** *** ** time ** ****** *** *******

** ** ***** **** **** ******* *** ******* , ****** easier

*** ***** *** **** *** ** **** ********** ** *** actual ****.

"*******, ** ****** ***********, ***** * ****** ****** ** ******* are ****** ** * ***** ****** ** *******, ********* *** be ********. ** ********* ** ********* ******* *******, *** *******, half * ***** ******* *** ** ********* **/*, **** ********** occasional *****.Client ***** *** ***** ****** ******** ******, ** ****."

**** ****** ******** ** * ****** *** ****, *** - and * ***'* ***** **** ********** *** ************.

** ** * ********* ***** **** ** '****' ************ ************, multicasting ** ** ****** - *** ******** - ******. ***? Because ***** *** **** *** **** ***** ******** ************ ***** there *** ***** ******* ** ************ ****** *********** ********.

*** ***** ***** ******** ************ **** ******* ************ ** ********** simultaneous ****** ******* ******** *** *****? **********.

*** **** ***** ***** ************ **** *** ** ***** ** multicasting *** *** ** *** ********** - ******** *** ************** potential *****? **** *** ********* **** *** ***, *** '*** to ***' ******** *** **** ********* ** ******* *** ****** data ** * *********** ******** ****.

** ****** ** * ****** ****** * *** ***** ***. The ********** (*** ******* *** ******'* ** **********) ***** *** allow *****-*******, ******* **** *** **** **** **** ******** ******* would **** ****** *** **** ** ******* *** **** ******(*) simultaneously.

** ******* ***** *** **** ********, ** ***** ** *********** #1, ****, ** *** ***** ** ** ****** ******* ** other ********* *********, *** **** ***** ** ** *** ******* cameras, ******** ********* ** **** ** ** ****** ** ****. The ******** *** ********, *** **** **** **** ***** ** far.

****** ***** ******* *** *****'* ********** ********* ** ***** ******* design ******, **** ******* *** *** ****. * **** **** networks **** ******* ** **. *** **** **** ****** *** replace **** ********, **'* * **** ***. **** ****** *********.

** *********, *** ***** ************ ******** *********.

** * *****-**** ******** ** *****-**** ******** ** ****?

** **** ******* ********** * * **** ****** **** **** use * **** ** *********, ******* ** *** * **** used ** * ******* *******.

****** **** ** ********** **** **** ** *** **** ******* also **** **** *** **** ******** ******. ** **** ******* are ** ********* ******** **** *** ****** *** ****.

*** ********, ******** * ********* ***** ****** ******* ***** *********** to * ******* **** **** ****** ** ***** *** ******.

**** ****** **** *** ***** ** *******, ********** ** ******* it ** ********** ** ********* ** *******.

**, * ***'* ***** **:

* ** ** ********** ****** - *** * ******* **** the ***** * ****** (******** ** ***** ***** *** ******** streams **** ** *** ******) ***** *** **** *** *** recorder ** ******* ************ ******-********* *******.

** * *****, ********** ****** **** *******?

* **** **** “**** ****** ** ** ***** *** ******”.

*** ***** ** ******* ** **** ****** *** **** * user ** ***** ********** ****** *** ****** *******. ****** **** a *** ** ******** *** * ***** ******. ********* ** you **** * ****** ****** ** * ****** *** ******** to *** * ********* *****, *** **** *** ****** ****** still ***** ***** ** *******.

*** ***** ** ******* ** **** ****** *** **** * user ** ***** ********** ****** *** ****** *******.

*****. ****’* **** * ******* ****, **? “**** ****** ** on ***** *** ******.” ******, ** ** *****, **** ****** is ******* * **** ** *** **** *******.

****** **** * *** ** ******** *** * ***** ******.

** ******, * ****’* ******* ** *** **** ******* ** used *** *** ***** ** ***-************ *****. **** *-**** *** Word *** ********* ***.

** ****, ** ** ***** ** ****** ** *******, **** floor *** *** *** ******, **** ***** *** *** *** reception ****. **** ********* **** ***** * **** ** *** four ****** ***** ***** *** *********.

*** **** **** ** *******, ** **?

*** ********* ***** **** ** ***** *** **** ****** **** so **** ****** ********* **** ******** ** ************ ******* *******. Your ****** **** **** **** ********** **** ********* *** *** camera ********* **** ** (*** ******* **** * ***** ** quality ****** *** *** ****** ** ****). **** *********, * could **** *** ***** ** **** ******* ******* *** **** while *** ****** ***** ****** * *****. **** ** ****** CPU ** ********* *******, ****.

*. ** ** ******** ** *** **, ** ** ******** C1 *** **

*. ** ** ** ***** *, ** ** ** ***** 2

*. ** ** ** ****** *, ** ** ** ****** 2

*. ** *** ** *** ** ****** *

* = ********* ***** *** * ****** ******

*. ** *** ** *** ************ ** ****

*. ****** * ** ************ ** ** ** *** ** total **** *** ***** ** *** ** (**** **)

*. ****** ** ** ** ************ **

*. ********* ***** **** *** ** **** **** ** *** C2

**. **'* **** ***** *** **, *** **** **** ******

***. ****** * ***** **** *** ** ***** **** ** and **

**. ****** ***** *** **

** *** ***** **** ** ** **** **********, ** *********, nothing ******* ****** * *** **** ** **** *** ****** down.

** *** ******* ****, ****** ***** * *** +**, *** C1 *** ** **** * *** *** ***** **** ** the ****** ***** * ***.

******* ***** ** ******, ********* ***** ** ***** ***. ** stated *******, *** (***** **** ******* ****** **** *********) ***** be **** **** ***** *******.

-****

**** ****** **** **** **** ********** **** ********* *** *** camera ********* **** ** (*** ******* **** * ***** ** quality ****** *** *** ****** ** ****).

*** ****, ** ***** *** ******** ** **** **********, *****. These ******** *** ******** **** ******** ******* ** ****. ** course **** *** ********** ******* ** ****, *** ******* **** cameras ***. *********** * ********* **** ******************.

* ***** ** ************** **’******************* *** *** *** **** * *******, ** ***:

**** ****** **** *** ***** ** *******, ********** ** ******* it ** ********** ** ********* ** *******.

** *** ***** **** ** ********* * ** **** **** happy ** ****** ********* ******* ******, *** *’* *** **** that*************.

***, *** *** ***** **** ************ ******* *** **** **** the ****** ******** (*** ** ******) **** ******* ***** ** one ****** ** **** **********.

******* * ** ******** ************ ** *** ******** ********* *********** claim.

** ******* *** **** *** **** ********** ******, ******* ***, that ****** ** ***** ******* * ****. *** *** *** source ** *** ***** ******, **'* ***** * **% ********* in *******, **?

*** *** *** ****** ** *** ***** ******, **'* ***** a **% ********* ** *******, **?

***, *** ******* ** *** ***** ******* *** ******’* ******** NIC *** *** ***** ******’* ******* **** ***** ** ******* as *** ***.

**** ** *** ** *****’* **** ***** ** ********* **** the ********.

** ***** ** ***** ** *** * ***** **** ********** the ************ ** **** ************ **** ******** *********. ** * understand ** **** **** ******* ****** ** ******, **** *** capable ** ****** ******** ** ****** ********* ******* *** ******** and ** ******* ******* *** ***** *** ****** ** ****.

** *** ******** ** ********* **** ***** ** ** **** specific. ** **** ** ******* **** ************ *** **** ******.

*****, **** **** **** **** *** *****, ** ******* **** is **** ******** **** **** ** ***** *** *********, ** hard ** *** *** *****/***** **** ***** ****** *** ********* information.

*** *******, ***** **** *** ******** ********** ** *** ********* of ****, ** * ********** ** ********* ******** ***** ******** if **** ********* ********* - **** ***** **** ** *** yes!, *** **** *** ***** ** ** ***** **** **** would *** ** * ***** ****** ****** - ******* *** point ** *** ******** *** **** ***** **** **** - do *** ******* ** **** *** ****** *** *******?

** *** ** **** **** **** **** ***** ***** ***. Did *** ***** *** **** **** ******* **, *** **** would ***. *** *** ** ** *** ******* * ***** say, **** *** *** **** ** ***** **** ********* ******* (which ****'* ******) *** **** **** *** ****** - *** the ******.

*** ***** ** ** ** ** ** **** ** ******** a ******** *** **** ** **** **** *.*. **** **** customer **** ** **** ** **** ***** ****** **** ** promised.

*** ******* * ****** ***** ****** **** * ****** ** cameras **** ** ********* *** ********** ***** ** ******* ***** today *** *** ** * ****** ***** ** * ****** so ** ****** *** ** ** *** *-****** ** *******, the ****** ** ************** ********** ***** ******/********* *** ******* *********** - ******* *** *** ********* ** ** ****** *** ****** - ****, *** ****** *******.

*** ** ** *** ******* - ***** ** ******* ****** to *** ***** ** * ******** ***-** ******* ***** **** no ****** ** *** ******.

**** ** *** ****** ** ********* ** *********? *** ***** special ************** ** **** ******?

** ******** *******, * **** ** **** ******* ***** ********. But:

*.) ***** * ******** ** *** ***** *** ***** * switches **. ******* *** **** ******* *** ********* ********. **, a ** ****** ** *** * ******, **** *** *********** them *** ***** *** ***********.

*.) ********* ***** ** ***** * *** ***** *. **** Snooping ** *** ** *** ** ***** ** ****** *** requests *** ************. ** **, **** *** ***, ** **** the *** **** *** **'* **** ** ****** *******. ***** your *** ****** ** **** ** ******! [*******: ****-*********] ****** ** *** *** ** **** *****, ****** call ** (******** *********), ** **** ***** *** *** **** down ********.

*.) ******** *** **** *** ******** ** ****** ***/** **** multicast. ** ** *** ****** **** ** *** **** ** record * ****** ************* ** ******. ** ** *** **** then ** **** ****** **** ** ***** (********) ******* ** recorders.

*.) ***** ** *** ******** **** ******** **** *********. *** large ***********, **** *** ** **** *********, ******** ***** *** work-arounds.

* **** **** **** **** **** ******** ******* *** *****-******* function ****** **** ******, ***** ** ******* ***** ** * dedicated ********* *** *** **** ********, ** **** * ******** process. *********, ***** ***** (****) ******* *** *** *** ******. Is **** ****?

* **** **** **** **** **** ******** ******* *** *****-******* function ****** **** ******, ***** ** ******* ***** ** * dedicated ********* *** *** **** ********, ** **** * ******** process. *********, ***** ***** (****) ******* *** *** *** ******. Is **** ****?

***, * ***** ***** ** * ******** ********* ** ****** your **** ***** ******* ****** ** **** * ********* **** for **** *******, ******** *** ****** * ***** ************ **********.

***?

******** **** ******** * ***** * ****** ***** **** ******, fast *** ***********. ******* ****** **** ***** ** * ***** ‘nother *****, ** *** *** ****** *** ** **** ** the ** ***** ** ************ ******* *** ** ****** *** deciphering ********* ************.

****’** *** ****** *********** ********* ***** *** ****** **** ** paralellization. ** **** **** **** ****** ****, ** **** ****** the ****** ** ******* ** ********** *******, ** ** * fallback **** ********* ** *** *****.

**** ** ** *** ******* *** *** *******, **'* ** and ***.

*** ** ****** **** ******* *** ** ****** ** ******** tree. **** ****** ******* *** ****** ******* ******* ** ******* content *** ******** ******. *** ***** *** ** **** ** across **** ** ********* ********.

**% ** *** **** *** ** *** *******, *** ****.

**** ******** **** *** **** ********* ****** ***** ****, **** is *** * ***% ****, ** * ****** **** ******, that ** ***** *** ****** ******* *** ** **** ****** typically. *******, ***** **** ** *** ******* ***** ********* ** per ****** *********** (**. ** ******** ******* ** * ******'* architecture).

*** ****** *** * *** ** **** ***, ** *******, for *******, ***** *****. **** **** * *** ****** ***** is ** ********* **** **'* *****. ** ***** * ****** switch **********. ** **** ****** * ***** **** ******* ******* of ********* ********** (*** ********* ** **** ** *** ****** switch, *** *** ***. *** *** *** **** *****...***** ** kind ** ****).

* **** * ****'* **** ****** *** ******** *** ****.

* **** * ****'* **** ****** *** ******** *** ****.

** ** **** ****** ** *** ******** ****, “**, *** usually.”?

**** *******, ***** *****, ** *****'* ******. **** **** *********** are ** ******* *****? **** ****** ** *** ***** **** of *** ***** *** ****** ***** *** ****** ** ********. Different ************* **** ****** ****** ***. **** **** * **********, Pelco, *** *******, ** *** **** ********* ********* ** *******. That **** *** **** ********* ** **** *************. * ***** also *** **** ** **** ** * ****** ********* **** CPU (**/** ****), *********. **** *** *** ** *** **** in ***, * ******, ***** *** ***** ** *** ****** are ******** *-* *****/******.

**** ... **** ** *** **** ******* ****** ** * year *** ** .... * ** ******** * ***! **** it ********* *** ********** *** **** ** ***** !!

***

******* ****** **** ******* **** ** ********* ** ******* *.* how ** *** ******* *** ***** ***** ******** *** ***/ Camera

****** ******** ** ********.
**** *****.


********** *** *** ****** *** **** ********* ** *****.
** *** *** **** ***** ********.
** *** *** ****** ******* *********** ** *** *****. (**** nDVR *** ** *******)
** **** ***** * *** ** ********* *******.
*)
**** **** ******* ****** ****** ** *******.
**** **** ******* ** ***.
********** ** ********* **** ******** ******.
**** *** * ********* ****.
*)
*** ******* ***-********* ************ ****** **** *** ****** **** **** Unicast.

*** ********* *** ** *** ** / ** ******.
******* ********* ***** ********** ** *** ******* ** *** **.
* ** ********** ******.

******** **** **** ******* ** **** ********** ********.
** *** ****** *** ************ ** *** ******, ********* **

***** *** ****.

** ******** **** *** **** *** ** ** ***** *** over * ***** *** ***** **** ****** ** *** *******

****** **** ** ****** ** *** ********* ** ******* ******* to ***** ********

***** ** ******* ******* ******'* *** *** *******

*** *** **** *** *** ******* ******, *** ******** , but ******** **** ** **** ** ************ *** ***** **** process's

******* **** * ******'* ( ** )

** ******* *** *.* **** ,*** ****, ***** ******* * nvrs **** * ********* ******* *** **** *** ******** **** stations ** ******* ** ****** **** *** *******

** ** *** *** *** ******* *** *** ** ******* its *** *** ** ****** *** ****** ********

**** ***********

********* *** *** **** ** ******* , ******** **** ****, To **** *******, ********* **** ******** ** ***** *** **** and ******** **** ******** ** ******** ****** *****

***** **** **** ** *** ******* ***** *** **** **** together *** ** *****

********, *********, *******, ********* ** *** ***.

****** *********** ** *** **** , ***, *** ** *** issues ******* ** ****** ** *******.

***** **** * *** ****** ** ** *** **** ******* that ***** ****

**** ** ******* ****'* *** **** ***** ******** ** *** quarky ****** , *** ** ****

*** **** * *** ** **** ***** * ** ** as ** ** ** *-* **** *** ***** **** *** old ** *****.

***** ** *** * * *** ***** ******* **** **** grade ******* *** ******* ********** **** *** **** ** ******* instead ** ** ** ** *********

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