Connecting IP Cameras to VMS System Tutorial

By: John Honovich, Published on Nov 03, 2012

In this tutorial, we cover the fundamentals of connecting IP cameras to VMS systems, including:

  • Analog vs IP
  • RTSP
  • Direct Integration
  • 'Standards' - ONVIF / PSIA
  • Advanced Integration - PTZ control, Panoramics
  • Advanced Non Supported Functions
  • Unicast vs Multicast

This tutorial reviews the key structural issues. For a lower level review of physically connecting IP cameras to VMSes, review our IP Video 101 training course.

Analog vs IP

Analog cameras, unlike IP, must be encoded / digitized before a VMS can recorded them. This is done either using encoder appliances or hybrid recorders. When analog cameras are connected to encoder appliances, the same rules and issues apply to them as for IP cameras. However, when analog cameras are connected to hybrid recorders, their video feeds are recorded directly, providing a simpler connection.

When connecting analog encoder appliances or IP cameras, one of three approaches is typically taken:

  • RTSP
  • Direct Integration
  • 'Standards'

RTSP

While the least commonly used, this approach is the most 'universal'. RTSP is a truly standards based video streaming protocol, used in many IP video applications beyond surveillance. Because of its wide use and maturity, it can connect almost any IP camera to most VMSes. All one needs to verify is the camera's specific RTSP URL syntax (see a list for IP cameras) and that one's VMS supports RTSP feeds. However, RTSP only connects a video stream. It providers for no other functionalities (like changing the frame rate or resolution on the VMS side, controlling PTZs, toggling i/o, etc.) Because of this, it is used mostly as a last resort to connect two otherwise incompatible systems. [See a member's discussion on RTSP pros and cons.]

Direct Integration

Direct integration between an IP camera manufacturer and a VMS developer is the most common and reliable means of connection as the two parties share technical information and work together to ensure the integration works properly. Limitations to remember include:

  • Time consuming and costly: VMS developers are often reluctant to integrate new IP camera manufacturer or those with lower sales volume. As such, while nearly all VMS vendors support direct integration with some IP camera manufacturers, many only have direct support for a fraction of all IP cameras available.
  • Varies by model: Just because a VMS supports a specific manufacturer model does not mean they support all of the manufacturer's camera models. Users should check carefully that their specific model is supported and not just the manufacturer generally (i.e., do not just check if they support Sony, check if they support Sony SNC-CH240 or whatever specific model you will be using).
  • Varies in depth: Just because a VMS integrates with a specific camera manufacturer model does not mean they support control or configuration of every functionality on that camera. Typically, only a small subset of the more basic ones are integrated though sometimes more advanced are available. If this is important, check on the details.

'Standards' - ONVIF / PSIA

Get Notified of Video Surveillance Breaking News
Get Notified of Video Surveillance Breaking News

Since 2008, the use of 'standards' to simplify and expand IP camera / VMS integration has been a big trend. Instead of directly integrating to the specifics of each IP camera manufacturer, a common method would be defined and used by all. Two significant groups emerged to battle to be that common method. ONVIF has won and PSIA has faded away for use with IP camera.

While ONVIF is not a 'true' standard, ratified by a standards body, within IP surveillance, it acts as a 'de facto' standard with the support of the biggest providers in the space and the adoption of more than 100 manufacturers. ONVIF experienced lots of problems in the field though these problems have diminished over the last 2 years.

ONVIF is a fairly reliable way to connect most cameras to most VMS systems for streaming video and control of basic functions like frame rate and resolution. However, more advanced functionalites like PTZ, i/o and motion detection still routinely suffer from integration problems. ONVIF actually uses RTSP but adds in more mechanisms to control and configure IP cameras.

Advanced Integration - PTZ Control, Panoramics

Controlling mechanical PTZs or dewarping video from panoramics are two advanced controls that are often not supported fully by VMS providers because of the significance increase in time and complexity of integrating them. Support certainly exists but the breadth of support can vary greatly among VMS providers.

Advanced Non Supported Functions

While IP cameras provide dozens of configuration options, typically only a handful of them may be configured / modified via the VMS. For instance, privacy masks, day/night settings, shutter speed and many more often must be done by connecting directly to the camera. Some VMSes do allow for configuration of more settings but it varies by VMS provider and IP camera manufacturer supported.

Unicast vs Multicast

Overwhelmingly, IP cameras use unicast to connect to VMS systems as they are direct streams from a single camera to a single recorder. However, sometimes, IP cameras use multicast to help facilitate connections to multiple recorder or live clients. For more on multicasting, see our multicasting for surveillance tutorial.

Comments : PRO Members only. Login. or Join.

Related Reports

Panasonic 4K Camera Tested (WV-S2570L) on Sep 13, 2019
Panasonic has released their latest generation 4K dome, the WV-S2570L, claiming "Extreme image quality allows evidence to be captured even under...
Commend ID5 Intercom Tested on Sep 12, 2019
Commend touts the new ID5 intercom as 'timelessly elegant' and the slim body, glass front touchscreen indeed looks better than common, but ugly,...
ONVIF Exposure To "Devastating DDoS Attacks" Examined on Sep 06, 2019
ZDnet reported "Protocol used by 630,000 devices can be abused for devastating DDoS attacks", citing exposure of ONVIF devices. And after an...
Genetec Stratocast VSaaS Tested on Sep 05, 2019
The VSaaS market is rapidly expanding in 2019, with Verkada, Meraki, Eagle Eye, Avigilon and numerous startups growing their market share. When we...
Scylla AI Video Analytics Company Profile on Aug 29, 2019
Scylla, an AI analytics startup, says they are targeting 1 Billion dollar valuation in 5 years and it "is not rocket science" to detect weapons and...
Uniview 4K Camera Tested on Aug 29, 2019
In our 8MP / 4K Fixed Lens Camera Shootout, Uniview's low end 8MP was firmly in the middle of the pack. Does their higher end Pro Series 4K camera...
Warning: Windows 7 Update Crashing NVRs on Aug 26, 2019
Windows 7 updates are causing VMS servers to fail to boot. After running the update, impacted systems do not boot as normal, instead display this...
Anyvision Facial Recognition Tested on Aug 21, 2019
Anyvision is aiming for $1 billion in revenue by 2022, backed by $74 million in funding. But does their performance live up to the hype they have...
Dahua 4K Camera Shootout on Aug 20, 2019
Dahua's new Pro Series 4K N85CL5Z claims to "deliver superior images in all lighting and environmental conditions", but how does this compare to...
Proactive CCTV "Only Affordable Video Archiving Solution" Profile on Aug 12, 2019
Proactive CCTV is claiming to offer "the only affordable video archiving solution on the market", reducing the storage typically required for H.265...

Most Recent Industry Reports

How Cobalt Robotics May Disrupt Security on Sep 13, 2019
While security robots have largely become a joke over the last few years, one organization, Cobalt Robotics, has raised $50+ million from top US...
Panasonic 4K Camera Tested (WV-S2570L) on Sep 13, 2019
Panasonic has released their latest generation 4K dome, the WV-S2570L, claiming "Extreme image quality allows evidence to be captured even under...
ASIS GSX 2019 Show Report Final on Sep 12, 2019
IPVM went to Chicago for ASIS GSX 2019, with many exhibitors disappointed about traffic and the exhibitor schedule changing next year. Inside we...
Installation Course - Last Chance - Register Now on Sep 12, 2019
Last Chance - Register Now - September 2019 Video Surveillance Install Course. Thursday, September 12th is your last chance to register for the...
Commend ID5 Intercom Tested on Sep 12, 2019
Commend touts the new ID5 intercom as 'timelessly elegant' and the slim body, glass front touchscreen indeed looks better than common, but ugly,...
US State Department: "Chinese Tech Giants" "Tools of the Chinese Communist Party" on Sep 12, 2019
The US State Department has called out "Chinese tech giants" for being "tools of the Chinese Communist Party" in a blunt new speech that makes...
Uniview OEM Directory on Sep 11, 2019
This directory lists 20+ companies that OEM products from Uniview, with a graphic and links to company websites below. It does not cover all...
Yi Home Camera 3 AI Analytics Tested on Sep 10, 2019
Yi Technology is claiming "new AI features" in its $50 Home Camera 3 "eliminates 'false positives' caused by flying insects, small pets, or light...
Hanwha Announces 32MP Camera + AI Line on Sep 10, 2019
In the first rise in maximum megapixel resolution in 5 years, Hanwha has announced a 32MP / 8K camera directly competing with Avigilon's H4 30MP /...
Fingerprints for Access Control Guide on Sep 09, 2019
Users can lose badges, but they never misplace a finger, right? The most common biometric used in access are fingerprints, and it has become one...

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.

About | FAQ | Contact