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:

Read this IPVM report for free.

This article is part of IPVM's 6,307 reports, 842 tests and is only available to members. To get a one-time preview of our work, enter your work email to access the full article.

Already a member? Login here | Join now

Related Reports

Phone Camera Calculator Released on Mar 10, 2020
IPVM has released the first-ever Phone Calculator, video surveillance design software that you can use on your phone, without installing an...
Glossary / Acronyms for Video Surveillance on Feb 10, 2020
This directory provides definitions and explanations for over 70 common video surveillance industry terms, including links to related IPVM...
Last Chance - Camera Course Winter 2020 on Jan 30, 2020
This is the only independent surveillance camera course, based on in-depth product and technology testing. Lots of manufacturer training exists...
Bandwidth Fundamentals For Video Surveillance on Jan 13, 2020
Bandwidth is the most fundamental element of computer networking for video surveillance systems. Because video surveillance can consume an immense...
IPVM Opens 12,000 Sqft Testing Facility on Dec 16, 2019
IPVM is proud to announce the opening of the world's first video surveillance testing facility that will allow us to significantly expand our...
False Verkada 'Unrivaled' Low Light Performance Claim Removed on Jun 12, 2019
Verkada falsely claimed that it delivered 'UNRIVALED LOW LIGHT PERFORMANCE' until IPVM questioned. In fact, Verkada's low light performance is...
Smart CODEC Usage Statistics 2019 on Jun 03, 2019
Smart codecs are now nearly a standard feature in IP cameras, but our statistics show integrator adoption has not increased at the same rate. In...
Verkada Video Quality Problems Tested on May 23, 2019
Verkada suffers from numerous video quality problems, not found in commercial IP cameras, new IPVM testing of Verkada vs Axis and Hikvision...
Average Frame Rate Video Surveillance 2019 on May 23, 2019
What is the average frame rated used in video surveillance systems? In IPVM's 2011 statistics, the average was 6-8fps increasing to ~10fps in...
H.265 Usage Statistics on Apr 19, 2019
H.265 has been available in IP cameras for more than 5 years and, in the past few years, the number of manufacturers supporting this codec has...

Most Recent Industry Reports

JCI / Tyco Security Products Layoffs on Jun 05, 2020
Johnson Controls / Tyco Security Products has confirmed COVID-19 related layoffs, expanding upon the April coronavirus cuts the company previously...
EyePark Presents Mobile Driver Authentication on Jun 05, 2020
EyePark presented its long-range QR code parking verification platform at the May 2020 IPVM Startups show. A 30-minute video from EyePark...
Bleenco "Under The Tongue" Temperature Detection Examined on Jun 05, 2020
"Say aah", says Bleenco, a PPE detection video analytics company, offering a different method for measuring body temperature with a thermal...
Hikvision and Uniview Entry Level Thermal Handheld Cameras Tested on Jun 05, 2020
While most screening systems cost $10,000 or more, manufacturers such as Hikvision and Uniview have now released handheld models for $1,000 or...
Sequr Presents HID based Cloud Access Control on Jun 04, 2020
Sequr presented HID based Cloud Access Control at the May 2020 IPVM Startups show. Inside this report: A 30-minute video from Sequr...
VergeSense Presents People Tracking Sensor on Jun 04, 2020
VergeSense presented its people tracking sensor and social distancing insights at the May 2020 IPVM Startups show. A 30-minute video from...
FLIR A Series Temperature Screening Cameras Tested on Jun 04, 2020
FLIR is one of the biggest names in thermal and one of the most conservative. While rivals have marketed fever detection, FLIR has stuck to EST...
"Fever Camera" Show On-Demand Watch Now on Jun 03, 2020
IPVM has successfully completed the world's first "Fever Camera" show. Recordings from both days are posted at the end of this report for on-demand...
Cobalt Robotics Presents Indoor Security and Access Robots on Jun 03, 2020
Cobalt Robotics presented indoor security robots at the May 2020 IPVM Startups show. Inside this report: A 30-minute video from Cobalt...
Dahua Sues Ex-North American President, Says Legal Typo on Jun 03, 2020
Dahua's former North American President Frank Zhang claims he is owed almost $11 million but Dahua counter claims it is just a "scrivener's error",...