Axis Fixes VBR / CBR Setting
Author: Ethan Ace, Published on Feb 23, 2015
Login to read this IPVM report.
Why do I need to log in?
IPVM conducts unique testing and research funded by member's payments enabling us to offer the most independent, accurate and in-depth information.
Related Reports on Bandwidth
July 2018 IP Networking Course
on Jun 16, 2018
The last chance to save $50 on registration is this Thursday, June 21st. Register now and save.
This is the only networking course designed...
Powerline Networking For Video Surveillance Advocated By Comtrend
on Jun 08, 2018
Powerline networking, using existing electrical wiring, has been around for many years. Indeed, over the years, some video surveillance providers...
H.265 / HEVC Codec Tutorial
on Jun 07, 2018
H.265 support has improved significantly in 2018, with H.265 camera/VMS compatibility increased compared to only a year ago, and more manufacturers...
VMS Server Sizing
on May 25, 2018
Specifying the right sized PC/server for VMS software is one of the most important yet difficult decisions in IP video surveillance. In the past...
Axis 12MP Stereographic Camera Tested (M3058-LVE)
on May 10, 2018
Axis has released the M3058-PLVE, a 12MP sensor, stereographic panoramic camera and Axis' first with integrated IR claiming images "sharp to the...
Last Chance - May 2018 Camera Course
on May 03, 2018
This is the last chance to register as the course starts next week.
This is the only independent surveillance camera course, based on in-depth...
IP Network Hardware for Surveillance Guide
on May 02, 2018
Video surveillance systems depend on IP networking equipment. In this guide, we explain the key pieces of equipment and features, explaining where...
Hikvision DarkfighterX Vs Darkfighter PTZ Tested
on Apr 26, 2018
Hikvision has focused on improving low-light performance for PTZs, an area that has traditionally been a problem, even more so than fixed cameras,...
Wireless Networking For Video Surveillance Guide
on Mar 29, 2018
Wireless networking is a niche in video surveillance applications, but it can be a difficult one to understand with proper wireless design,...
Cellular (4G / LTE / 5G) For Video Surveillance Guide
on Mar 06, 2018
In this report, we explain using cellular for video surveillance including:
4G vs LTE vs 5G
4G standards
5G future
Advantage: Placing cameras...
Most Recent Industry Reports
IPVM Vulnerability Scanner Released
on Jun 18, 2018
IPVM is proud to announce video surveillance's first and only cybersecurity vulnerability scanner. This tool allows quickly and simply...
Hikvision Corrects False Cybersecurity Announcement
on Jun 18, 2018
Hikvision has corrected a false cybersecurity announcement that claimed a British government-sponsored program endorsed the cybersecurity of...
July 2018 IP Networking Course
on Jun 16, 2018
The last chance to save $50 on registration is this Thursday, June 21st. Register now and save.
This is the only networking course designed...
The Dumb Ones: PSA's Bozeman On Cybersecurity
on Jun 15, 2018
The smart ones are the hundred people who flew to Denver and spent $500+ on a 1.5-day conference featuring Dahua as a 'cyber responsible partner',...
Amazon Ring Launches $10 Monthly Professional Alarm Monitoring
on Jun 15, 2018
Amazon's Ring has announced an alarm system with 24/7 professional alarm monitoring for $10 per month, a fraction of the $30+ per month traditional...
Axis Releases First New Access Controller In 5 Years (A1601)
on Jun 15, 2018
It has been 5 years since Axis 2013 entry in the physical access control market, with the A1001 (IPVM test).
Now, Axis has released its second...
Hikvision 12MP Fisheye Camera Tested (DS-2CD63C2F-IV)
on Jun 14, 2018
Hikvision's DS-2CD63C2F-IV is their flagship panoramic camera, with a 12MP imager, 15m integrated IR, smart codec, and more. We tested the 63C2 in...
Four Major Outdoor Camera Install Problems
on Jun 14, 2018
Over 140 integrators told us the top four camera installation mistakes that lead to unexpected problems and failures. Their comments often...
Security Sales Course Summer 2018
on Jun 14, 2018
Based on member's interest, IPVM is offering a security sales course this summer.
Register Now - IPVM Security Sales Course Summer...
China Public Video Surveillance Guide: From Skynet to Sharp Eyes
on Jun 14, 2018
China is expanding its video surveillance network to achieve “100%” nationwide coverage by 2020, including facial recognition capabilities and a...
The world's leading video surveillance information source, IPVM provides the best reporting, testing and training for 10,000+ members globally. Dedicated to independent and objective information, we uniquely refuse any and all advertisements, sponsorship and consulting from manufacturers.
Comments (12)
Undisclosed #1
Interesting, I tried to get them to change the word "constant" to the proper "constrained" for 6 years with no luck.
Create New Topic
ling chen
Thanks Ethan, for sharing the information.
it seems there are two VBRs ?
1. VBR no Rmax cap
2. VBR with Rmax cap
No CBR setting?
-Ling
Create New Topic
John Honovich
Btw, I think MBR would be a good term to adopt. A 3 letter acronym makes it a clearer contrast to VBR and CBR. CBR is constant, VBR varies and MBR varies to a maximum bit rate.
Create New Topic
Brad Silvernail
The old CBR settings were critical to manage "runaway" bandwidths with some network cameras at night. I think IPVM did one of the first studies on this and validated what we've observed for years. A 720P or 1080P camera that could manage on 2 to 4 Mbps during the day, could drive 10 to 15 Mbps bandwidth at night. The CBR settings, effecting a cap at say 5 mbps, with priority on quality, should really be a default. Thanks for the info. Hadn't seen this in the new firmware yet.
Create New Topic
Undisclosed #2
I am unable to find the mention of that verbiage change in the release notes you linked, nor in the detailed notes of either of the 5.60.x firmware releases for the P3364.
How did you discover it?
Curiously, in the 5.60.1 notes mention is made of a change in the behavior of CBR:
What does that mean, if 'constant' now equals 'maximum'?
Create New Topic
Undisclosed #2
Wow, they are a bit conflused about this change. The paragraphs below are duplicated word for word in this manual, except for changing Constant to Maximum.
Create New Topic
Undisclosed Manufacturer #3
I heard previously from a sytem integrator that Axis' 'CBR' (VBR with a limit) was good at limiting bandwidth, however the SI was not so happy when his customer complained that they lost frames in the recordings of an incident. Turns out that to maintain the bandwidth limit, the codec was dropping frames. This is Ok if you know what's going on but the customer was surprised and complained that his requirement of x fps was not maintained. In some applications a specified fps (or minimum fps) is a legal requirement in Europe. Is that also the case in the US?
Create New Topic