ONVIF Protocol: Profile T (Advanced Video Streaming)

The ONVIF profile T was created to address advanced video stream capabilities which include motion detection, video analytics, and H.265 CODE support.

ONVIF profile T

The standard was published in July 2017 as a release candidate which means the protocol was not stable and well-tested yet.

==> If you don't know what ONVIF is, please read the article: How does Onvif work to understand more about the protocol. I also recommend the article: ONVIF protocol, the benefits, and drawbacks.

The ONVIF Profile T features

H.265 compliant;

Motion detection;

Analytic Events;

Advanced video metadata

Digital Inputs;

Relay Outputs;

H.265 compliant

The H.265 CODEC is supported by the Profile T via the Media2 service.

I know you are going to ask "what is the Media2 service?" and here is the answer...

Media 2 service is a standard framework designed to support different codecs, so the H.265 and other ones can be implemented into the protocol which makes it future-proof and easier to work with.

VMSes can now benefit from the use of the H.265 available on modern cameras.

Motion Detection

The use of motion detection is essential for surveillance systems since it allows to generate events which are used to trigger alerts and reduce the use of storage.

VMSes can use the motion detection feature from the IP cameras or use their own built-in motion detection, the first method reduces considerably the need for extra processing power that's why it's proffered on most cases.

Before the ONVIF profile T release, only IP cameras with proprietary protocol implementation were able to trigger the motion detection event to the VMSes.

This scenario changes now and as long as the IP cameras have the profile T, they are able to send the motion detection events to different VMSes and that's is something very useful for those with use a mix of different device's brand.

Analytic Events

Most of the professional IP cameras have some type of video analytics features available and usually, their use is tied to a proprietary VMS.

Not anymore... with the ONVIF profile T now the VMSes can receive the advanced analytics events and trigger an appropriate response to that.

Bi-directional audio

Most of the IP cameras in the market are compliant with the ONVIF profile S which  support the use of audio on IP cameras, however, it's just one-way audio.

Bi-directional audio can now be used with the profile T which allows to transmit and receive audio from the IP security cameras and other network devices.

This feature is essential for applications that require two-way communication, such as public transportation, parking and emergency alarm/alert systems.

Why ONVIF Profile T is important?

The ONVIF profile T is important because it supports the new technologies that are being used by the security camera manufacturers for years.

The H.265 CODEC, for example, was implemented in IP cameras and VMSes from different manufacturers in an effort to reduce the use of camera bandwidth and storage and this is very important to help in the project cost reduction.

Video motion detection and video analytics are also very important to allow the use of the AI (Artificial Intelligence) which helps to maximize the system efficiency. 

Depending on the surveillance project, the bi-directional audio is also an essential feature that in most cases are the default standard on the IP cameras.

By allowing the use of all those technologies and features, the ONVIF profile T contributes to the interoperability between different systems and manufacturers which give the end customer the freedom of choice.

ONVIF Free Software

You can use a software to check which ONVIF version is implemented in your IP camera. Please read the article: ONVIF Device Manager Review, and Download.


ONVIF profile T is very important to help the product integration in the surveillance and access control industry, in the next future more manufacturers will be playing this game that benefits everybody.

Manufactures such as Axis, Dahua, Hikvision and Sony already have their products listed on the ONVIF's database and soon others will also be listed.

Want to become a better professional ? 

If you want to become a professional CCTV installer or designer, take a look at the material available in the blog. Just click the links below:

Ultimate Guide V3

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