Sony and Samsung Breaking VBR

By: Ethan Ace, Published on Oct 21, 2016

For years, users have known variable bitrate (VBR) as one thing only: bandwidth varies, compression stays the same.

This is not an accident but an essential characteristic of VBR. By allowing the bit rate to vary, the compression level can stay the same regardless of the changes in scene complexity (think hallway when a school is closed vs hallway during recess vs hallway at night).

But now, in a confusing move, some manufacturers have changed their definition of VBR, giving users no option to adjust image quality. We take a look at these issues in this note.

*** *****, ***** **** known******** ******* (***)** *** ***** ****: bandwidth ******, *********** ***** the ****.

**** ** *** ** accident *** ** ********* characteristic ** ***. ** allowing *** *** **** to ****, *** *********** level *** **** *** same ********** ** *** changes ** ***** ********** (think ******* **** * school ** ****** ** hallway ****** ****** ** hallway ** *****).

*** ***, ** * confusing ****, **** ************* have ******* ***** ********** of ***, ****** ***** no ****** ** ****** image *******. ** **** a **** ** ***** issues ** **** ****.

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

Samsung/Hanwha ******* *

*** ******* * ****** (*** *** ****) **** *** ******* a **** *** ************** which ***** *********** ** a ******** ************. ** compression ******* ** ******** in *** *** *********, shown *****, ***** **** Samsung ****** ******** **-** ***** ** *********** levels. ******* **** ******, users **** ****** ** trial *** *****, ********* the ******* *** ** find *** **** ******** of ***** ******* *** bandwidth *** ***** *****.

Sony *** **********

** ****'* *** ********** 4K/20MP ******, *** ***-****** (*** *** ****), *** ***** ******** no ***********/******* ******* ** was ***** ** **** cameras, **** * ***** "Bit **** *" (*********** a ****** *******) *** "Max" (*** ***). 

*******, **** ***** ******** are *********, ** ** found *** ****** ******** less ********* **** *** target ******* ** *** tests, *** ***** ********** the ******* ***, ********** of ***** ********. ** review ***** ****** ** this ***** **** *** tests, *****. 

Why **** ******* 

******* ******* ** ***********, users *** (**********) ****** that ***** ******* *** using ********** *********** ****** (27-30 *******), *** ******* bandwidth. *******, ***** ******* settings ** **** ** the ***** ************* ******* in **** *** ************ (low ***), ***** ******** little ******* ******* ** image *******, *** ********* bandwidth *************.

******* ***** ***** ** these ****** *** ***** workarounds, ***** ***** *********** be ******* *********/******* ***** and ******** ********* ****.

May ** ******

**** **** **** ** highlight *** ************* ***** as *** ******** ** are ***** ** *** our *******. *******, ** you **** ***** ******** of ************* ***** ***** or ***** ***-******** ***** configurations, ******* *****.

Further *******

************* ****** ***/*** (******* bitrate) ************** ** *** to **** ******* ************ video. ******* ****** **** see ***** ******* *** more *********** ** ***** streaming *******, *** ******* of ********* ****, *** compression:

Comments (4)

Dear Ethan,

I am confused with the terminology MBR used by you, what it means as per standard ?

As such there is

CBR - Constant Bit Rate( Encoder must meet user set target bitrate )

VBR - Variable Bit Rate ( There is no cap on Maximum bitrate to be achieved by encoder, video image quality is the encoder's priority irrespective of result bitrate)

CVBR - Constrained VBR ( Extended VBR standard where there is cap on Maximum Bit Rate, to achieve quality under complex scene encoder can not exceed the Maximum Bit Rate cap).

Do you mean the term MBR is CVBR as per standard ?

https://en.wikipedia.org/wiki/Variable_bitrate

Do you mean the term MBR is CVBR as per standard ?

CVBR is not a 'standard'. It is just another name for VBR with a cap.

We avoid using CVBR since, within our industry, some vendors use CVBR to mean something different. For example, Pelco's CVBR implementation historically has been VBR within a tightly constrained bandwidth range.

As such, we use MBR to emphasize the 'maximum' element.

Thanks for the clarification John.

So MBR is the name used by IPVM or some vendors.

Googled about MBR but except IPVM site I couldn't get any such useful information and was curious to know what it is.

Axis is using MBR:

Login to read this IPVM report.

Related Reports

Dynamic vs Static IP Addresses Tutorial on Apr 16, 2020
While many cameras default to DHCP out of the box, that does not mean you...
Trade Groups Request NDAA Blacklist Delay Citing Coronavirus on Apr 06, 2020
Two trade groups representing government contractors have asked Congress to...
FDA "Does Not Intend to Object" To Unapproved Fever Detection Cameras If No 'Undue Risk' on Apr 17, 2020
The US FDA has declared it will not go after the many companies marketing...
Every VMS Will Become a VSaaS on Feb 21, 2020
VMS is ending. Soon every VMS will be a VSaaS. Competitive dynamics will be...
Latest London Police Facial Recognition Suffers Serious Issues on Feb 24, 2020
On February 20, IPVM visited another live face rec deployment by London...
Last Chance - Spring 2020 IP Networking Course - Register Now on May 06, 2020
This is the last chance to register for the only networking course designed...
Facial Recognition: Weak Sales, Anti Regulation, No Favorite, Says Security Integrators on Jul 07, 2020
While facial recognition has gained greater prominence, a new IPVM study of...
Beware Of Feevr on Apr 14, 2020
Beware of "Feevr". The company is marketing a 'Feevr' solution that...
Fever Camera Sales From Integrators Surveyed on Jun 01, 2020
Fever cameras are the hottest trend in video surveillance currently but how...
Verkada: "IPVM Should Never Be Your Source of News" on Jul 02, 2020
Verkada was unhappy with IPVM's recent coverage declaring that reading IPVM...
IPVM For PR / Marketing People on Apr 29, 2020
Since IPVM does not accept advertising nor sponsorships, etc., PR / marketing...
UK ICO Approves Unconsented Facial Recognition At Security Conferences on Feb 05, 2020
The UK's data protection agency has declined IPVM's GDPR complaint against...
Avigilon ACC Cloud Tested on Jul 08, 2020
Avigilon merged Blue and ACC, adding VSaaS features to its on-premise VMS,...
Vulnerability Directory For Access Credentials on Feb 20, 2020
Knowing which access credentials are insecure can be difficult to see,...
FLIR New Coronavirus Prioritized Temperature Screening Camera Examined on Apr 03, 2020
FLIR has announced a new series of thermal cameras "prioritized for entities...

Recent Reports

Genetec CEO Declares "We Don't Negotiate Payment With Patent Trolls" on Aug 11, 2020
Are patent trolls like terrorists? Genetec's CEO is coming out strongly...
Hanwha AI Analytics Camera Tested on Aug 11, 2020
Hanwha has released their Wisenet P AI camera, adding person and vehicle...
Alabama Schools Million Dollar Hikvision Fever Camera Deal on Aug 11, 2020
The Baldwin County, Alabama public schools purchased a $1 million, 144-camera...
Dahua Taunts Australian Government, Continues To Sell Illegal Fever Cameras on Aug 10, 2020
Dahua is effectively taunting the Australian government by continuing to sell...
HID Releases VertX Replacement Aero on Aug 10, 2020
HID is replacing two established and broadly supported types of access...
NDAA Compliant Video Surveillance Whitelist on Aug 10, 2020
This report aggregates video surveillance products that manufacturers have...
Telpo China Temperature Tablets Tested on Aug 10, 2020
The provider for overseas companies ranging from Canon Singapore to US'...
Dangerous Hikvision Fever Camera Showcased by Chilean City on Aug 07, 2020
Deploying a fever camera outdoors, in the rain, with no black body, is...
"Grand Slam" For Pelco's PE Firm, A Risk For Motorola on Aug 07, 2020
The word "Pelco" and "grand slam" have not been said together for many years....
FLIR Stock Falls, Admits 'Decelerating' Demand For Temperature Screening on Aug 07, 2020
Is the boom going to bust for temperature screening? FLIR disappointed...
VSaaS Will Hurt Integrators on Aug 06, 2020
VSaaS will hurt integrators, there is no question about that. How much...
Dogs For Coronavirus Screening Examined on Aug 06, 2020
While thermal temperature screening is the surveillance industry's most...
ADT Slides Back, Disappointing Results, Poor Commercial Performance on Aug 06, 2020
While ADT had an incredible start to the week, driven by the Google...
AHJ / Authority Having Jurisdiction Tutorial on Aug 06, 2020
One of the most powerful yet often underappreciated characters in all...
SIA Coaches Sellers on NDAA 889B Blacklist Workarounds on Aug 05, 2020
Last month SIA demanded that NDAA 899B "must be delayed". Now that they have...