Testing Bandwidth vs. Frame Rate

By IPVM Team, Published on Jan 23, 2019

Selecting frame rate has a major impact on surveillance bandwidth and storage consumption. But with smart codecs now common and cameras more efficient than ever, what is the "right" frame rate?

In this report, we tested 10 cameras from 3 manufacturers, testing framerates ranging from 1-30 FPS, with smart codecs on and off, using H.265 and H.264, in multiple varying complexity scenes.

Inside, we give our key findings and two key recommendations for optimizing surveillance framerates.

free image

Key ********

***** *** ******* *** takeaways **** *** *****:

  • **% ******* ******** **** low ***** **** (*-* FPS) ** ******* (**-** FPS):** *******, ****** **** low ***** **** ** 10-15 *** (******* ** ************) ******** ** * ~15% ******** **** ***** smart ******, *** ~**% without, **** **** ********** discussed *****.
  • ****** ******** (~**%) **** average ***** **** ** high:******** ********* **** ************* when ****** **** **-** FPS ** ** ***, about **% **** ***** codecs *******, *** ******** higher (~**%) **** **** disabled.
  • ***** ****** ************* ****** bitrate ** *** ***** rates:***** ****** ******* ******** significantly **** *** ** night ** *** *** levels ******, ************* ~**% in *** ******** ******* scenes *** **-**% ** more ******* **** ******** night *****, ********** **** our **** *****.
  • ***** ****** ****** ********* from ****** ***** *****:** **** *** *** night ******, ** *** resolutions, ***** ****** ******** the ******* ********* **** when ********** ***** ****.
  • *.*** ****** ********* ** H.264:** *** *****, *.*** camera ******** ****** ************* similarly ** *.***, **** smart ****** **** ** and ***, ****** ******** were ******* ***** ** 20-30%.
  • ** ******** ***** ** high ***** *****:**/*** ****** ******** ********* more ******* **** ***** and *** ******* ** high ******** ******, **** than ******** ******* **** 1 ** ** ***, while ***** *********** ********* by ~**-**%.

***** ** ***** ********, we ******* *** *** recommendations:

Recommendation *: *** ***** ******

*** ** ***** *********** benefits ** *** ***** rates ******, ** ********* that ***** ********* ****** frame ***** *** ***** codecs ******** ********. *** only ** **** ******* overall ***** ******** ****** all ***** ***** (~**-**% day/low ****** *** ~**% night/high ******), *** **** reduce *** ****** ** increased ********, ** ****. For *******, ********** ***** rate **** * *** to **-** ******* ** a ~**% ******** ***** smart ******, *** **** 30% *******.

Recommendation *: **-** *** ******* *** **** ************

***** ** ***** *****, 10-15 *** ** *********** the "***** ****" ** the ******** ******* ***** rate *** *********. ****** to **-** *** **** 3-7 *** ********* ******** by ***** **-**% **** using ***** ****** (**-**% without) ******** ** *-* FPS. ** ********, ****** from **-** *** ** 30 *** ** * much **** ******* ********, ~30-35%, ****** ** * much **** ********* ******** for *** ******* ***** additional ****** ******* ** most ************.

30 ***: +**% ******* *** +***% ******

*******, **** **** ***** 30 *** ******** ~**% more ********* **** **-** FPS, **** ***** *** find **** * ********** trade *** *** ***% more ******, ** ***% vs. ** ***. **** may ** **** ****** in ************ **** **** movement, **** ** **** intersections ** **** ******** areas ***** **** ** or ** *** *** miss ****** ********* ** for ***** **** ****** storage ******* *** ****** wish ** ******* *** most ****** ****** ********.

Note: *** * ********

**** **** ******* ** this **** **** **** to ****** ****** ** frame **** ***************. ******** ***************** ************ ************, ****** ** view *** ***** ******** varied ***** ******. ******* of ****, ******* ****** not *** ***** ************ to ******* ** ******* between ******** ******* ** resolutions. ** **** ** perform ************ ******* ** more ******* ** ******* scenarios ** *** ****** months ** ****** **** ********.

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

** ******* *** ***** in * ****** ******* interior *****, **** *** motion, *** ****** ***** rate **** * ** 30 *** ** **** camera.

**** ***** ***** ******, bitrates ********* ** ******* of ~**% **** ******** from * *** ** 10-15 ***, **** ******* for ************. ** ********, increasing **** ** *** to ** *** ********* bitrates ** ~**%, * more *********** ******.

**** **** ***** *** and ***/** *********** ****** fairly ********* ** **** scene, ***** ******* ****** to ******** **** ******** from *-** ***, **** a **** ******* **** at ** ***.

low activity day comparison smart codec

********* ******* ***** ****** enabled **** ******, ~**% when ******** **** * to ** ***. ** 1080p *******, ******* ********* faster ** ****** *** settings, **** ******* ********* when ****** **** * to * ** ** FPS, ******* ** **** smart ****** **** *******. Also *******, ** ****** resolutions, ******** ********* ****** at ***** ********, **** 1 ** * *** the ******* ********** ********.

low activity day comparison no smart codec

Note: **** ***** ****** ***** **** ** ****

**** **** ** **** cameras, ***** ****** ******** to ***** ****/*** **** when ***** * *** frame *****, **** ******** much ****** **** ***** settings. *** *******, ** the********* **-**********-*, ******** **** ******** highest ** * *** with ***** ****** *******.

smart codec bitrate higher at 1 fps

*******, ******* ** * stream ********, ** ******* that ******* *** *** disabled **** *** ****** was *** ** * FPS **** *.***+ ****** on, ***** ** ***** frame ***** ** ****** to ~** *******.

High ********** *********

** *** *** ******** increased ** **** ******* scenes, ** ****** ** a **** ***** (~*.* Lux) **** ** **, with ***** ****** ****** throughout *** *****.

***** ****** **** ******* less ********* ** *****, with ******** ~**% ***** than ***-***** ***** *********, less **** *** ~**% reductions **** ** *** daytime ***** *****.

**** ******* ** **** scene, ***/** ****** ******** increased **** **** ******* than *** ** ***** cameras **** ********** *******. While ***** ***** ***** and *** ******* ********* only ~**% ** ******* when ****** **** * to ** ******** ** ** ***, average ******** ** ***/** cameras **** **** ****** when ******** **** * to ** ***, *** increase ** **** **% when ****** **** ** to ** ***.

high activity night comparison

*** **** *** **** with ***** ****** ********. 1080p *** *** ******* both ********* ********, *** less **** ******, ***** 8MP/4K ****** ******** **** than ******. **** **** 1080p/4MP ********* **** **** significant **** **** ***** codecs *******, ~**-**% **** moving **** *-** *** (vs. ~**%) *** **-**% when ******** **** ** to ** *** (**** vs. ~**%)

high activity night comparison 0 1lx

H.265 ****** ********* ** *.***

****** *** ****** ******, H.265 ****** ********* ** H.264, **** ********** ***** overall ********. ***** *.*** models **** ******, ****** because ***** ****** *** available, *** ****** ******** overall *******.

*** *******, ** *** nighttime **** ********** *****, both *.*** *** *.*** trended ******* ** ******* rates. *.*** ******** ******** about **% ***** ** this *****.

h 265 scales similary to h 264

**** *** **** ** all ****** ******, *******, nighttime, **** *** ******* smart ******.

Cameras ******

*** ********* ******* **** used ** **** ****:

  • **** *****-*** ** **
  • **** *****-***
  • **** *****-***
  • **** *****-*** ** **
  • ********* **-**********-*
  • ********* **-**********-*
  • ********* **-*********-***
  • ****** ***-*****
  • ****** ***-*****
  • ****** ***-*****

 

Comments (9)

****(*.***, *.***) *********** ** based(among ***** ******) ** image *********** ******* ******. More ***** => **** correlation ******* ****** => less ***********.

*** ******* => ***** pixel **** => **** noise(especially ** *****) => **** correlation ******* ****** => less ***********.

*** ***** ********* *** did ** **** ********* ** night. 
***** **** **** ******* frequently ****** ** **** with * ***** ********** during *** *****. ** let's *** * ****** downscaled ** *(***** * believe camera ****** **** ** the ******* ***** **** is *********, **'* ******* ******* filter ** ****** ). 

* ****** *** **** 8mp ******* ***** ****** at ***** ** **** as 2MP ******. *** *** the ******* ********** ****** cameras ** **** ****?

*** ******* **** ****** consistent ****** *** *******. They *** ******** ********** in *******, *** *** trends **** *******, **** higher ********** ******* ******.

*****, *'* ***** ** I *** *** **** myself *****...

*'* ********** ** *** how *** ******* ****** if **** ** * MP ******* *** ** results *** ********** ****** camerasunder **** ********.

*** ** **** *********?

 

* ****** **** ***** 8MP ******* *****, ******** needs **. 
********** (***** ** **** tests) **'* ********* ** night **** ******* *****...


*** ******* ** ** use *** ******* ** 2MP ** *****.

*******, **'* ***** ** nice ** **** ** it ***** *****. 

* ***** **** ***** depend ** ******* *** sensor ***** ** *** or ** ** **** samples ** ***. * have **** **** ******.

***,

* ******* ******** ** **** ** a ******** ** ************. ( *** ****, ** do **** ********* *** ***** of **** ********* *****.

*** ******* => ***** pixel **** => **** noise(especially ** *****) => less *********** ******* ****** => **** ***********.

*** ******* => ***** pixel ****, **?

** *** ****

**** *** ******* => small ***** **** ?

* ****** *** **** 8mp ******* ***** ****** at ***** ** **** as *** ******.

****, *** *** ****** “downscaled” ** *** ***** be ******** ** **** half *** ***** ** the ******** ***, *** still ***** **** ** the ***** ** * native *** ******, ******** a **** ******.

**** *** ******* => small ********* ?

***, **** ** **** I *****, ******. 

*** **** ***** *** numbers. * **** ** not **** ******* ** sensors ******, ***** *** are *****. * ***** it **** ***** ****** on ***** ***** ********* filters *** *** ********* used ** *******. *** this ******, * ********** IPVM ** **** **. 

***** *******.  **** ******** correlate **** **** **** we **** ********** ****** our *** *** ***** testing **** ***** ******* and *** *******.  ** a **** **** ******* hundred *******, ** ****** see * ******* ** 8MP ******* **** ******** their ********* ********* **** beyond *** ***** ******* (20mbps ** *******).  ***** cameras ********* **** **** more ******* ***** ****** by * ****** ** factors ********* ***** ******, IR *********** ****** ********** *** of ******** **********, ** illuminator ****** **** ***** adjacent ******* ************ *** problem ******, ****** *** building ****** ******* **** the *******, ******** ****** in *** *** (**** and ****), *** ******* flying ****** *** *******.

***** *******!  ** ***** be **** ** *** a ******* ********* *** impacts **** ***** ************ have ** ****** *** workstation ****** ************.  

 

******* ************ ** **********, for *******, *** *** be ***** *** ********** horsepower **** ***** ** necessary ** ***** *********.

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