What Are Differences Between NDI® Vs NDI® |HX

What Is NDI®?

Network Device Interface (NDI) is a royalty-free software specification. Following NDI® coding, video-compatible products can connect, transmit, and obtain HD video across a computer network. It happens in a precise frame, low-latency way ideal for shifting in a live production setting.

The NDI® code is projected to offer 1080P high-definition video at VBR data rates of roughly 100 Mbit/s when moving over gigabit Ethernet. AV and broadcast corporations all over the world support NDI®. Almost any SDI or HDMI equipment may now be found on an NDI® network due to tiny converters and NDI® bridging modules. 

Native NDI® products include switchers, media processors, streaming encoders, live streaming PTZ camera models, production software, camcorders, and multiviewers. 

What Is NDI® |HX?

NDI HX Camera 1
Source: Telycam

The NDI® |HX(high efficiency) is lower bandwidth version of NDI® full bandwidth. It was born and used H.264 video compression method to reduce the required network bandwidth.You can control NDI® HX cameras using a hardware/software controller. It is primarily composed to allow simple interaction between standard IP streams like RTSP/RTP and the NDI® world. You can check out the webcam & PTZ camera factory Telycam company to acquire the best 30X NDI® camera.

What Is NDI® |HX2?

Source: pinterest

NDI® |HX2 is the next-generation and more productive NDI® protocol. It is a genuine native NDI® stream from the end. It implies that it is a “cleaner” enactment than NDI® |HX, and it can enable more dependable, low-latency, and adaptable connections while still maintaining all of NDI’s overall capabilities. 

Through the network, the NDI® |HX2 can deliver full picture quality similar to that of NDI®. The transmitting and obtaining devices’ codec execution determines NDI® latency, which can be as low as a few frames in theory. 

What Is NDI® |HX3?

NDI HX3 camera
Source: Telycam

The most recent edition of the NDI protocol is NDI® version 3 (NDI® |HX3). For a maximum of users in live incidents, live video production, AV, remote production, conference presentation, and streaming, HX3 is likely to be the best NDI® choice. At present, NDI® |HX3 provides ultra-high video quality with relatively low latency.

It does so at the expense of somewhat greater bandwidth.  Make sure to reach out to the best PTZ camera manufacturer to acquire high-quality cameras.

Differences Between NDI® vs NDI® | HX

NDI camera
Source: Unsplash

Here are some essential differences between NDI® |HX vs NDI®. 

Full NDI® is an I-frame higher data rate protocol that can be used to renew complicated SDI or HDMI connections. On the other hand, it does need some bandwidth, like 140 Mbps for one 1080p60 NDI® stream. 250 Mbps is necessary for one 4Kp60 NDI® stream. 

NDI® | HX is a less-bandwidth edition of NDI®, which is a condensed version of the lengthy GOP H. 264 variant with low bandwidth regulations. For instance, one 1080p60 NDI® |HX stream takes roughly 10 Mbps.

Here is a clear representation of the dedicated bandwidth approved for NDI® vs NDI® |HX:

A 1920 × 1080@30 fps NDI® stream mandates a minimum of 125 Mbps of attached bandwidth.

A 1920 × 1080@30 fps NDI® |HX stream requires a minimum of 8 to 20 Mbps of attached bandwidth.

The quantity of bandwidth used is determined by the video content. Subjects that are fairly static, such as a document camera or a person sitting near a podium, use low bandwidth. On the other hand, more dynamic content necessitates more.


The NDI® protocol has extremely ultra-less latency (1 frame or less) and nearly no quality loss. Though, When compared to high bandwidth NDI®, NDI® |HX has some latency, it is still reasonable and decent than the existing RTSP transmission latency. The pause is based on the gadget utilized, video resolution, frame rate, and network situations.

Video Transmission

In order to meet high-quality video transmission requirements, it is essential to utilize the entire NDI® coding and transmission. The local network capacity is fixed. For example, Gigabit Ethernet can only send numerous NDI® sources at once.

Due to the less bandwidth requirement, NDI® |HX can be deployed via WiFi or network connectivity that is more passive than Gigabits. In addition to that, it enables several video streams to be hosted over a basic Gigabit network without spending a lot of network traffic.

Differences Between NDI® |HX vs NDI ® |HX2 vs NDI® | HX3

NDI HX camera
Source: pinterest

Here we have listed brief differences between NDI® | HX vs HX2 vs NDI® | HX3. 

Compared to NDI® | HX, NDI® |HX2 is a significant advancement, and NDI® |HX3 is the latest version of NDI® |HX2. On lesser bandwidth networks, NDI® |HX has always performed admirably than other latest editions. 

At present, it is possible to create streams that are about half the size of HX1 versions with NDI® | HX2. It accomplishes this by allowing users to choose between HEVC (H.265) compression, which generates relatively high-quality video at significantly lower bitrates, or greater video quality at the same bitrate.

One disadvantage is that HEVC is a sophisticated codec that necessitates additional processing power in cameras, switchers, and different gear to manage. Numerous streams of HEVC can be supervised by the current generation of PCs and video hardware. However, the old appliances might not be able to support HX2, especially in 4K.

What You Need To Consider When Selecting NDI® Or NDI® |HX Camera?

Sony PTZ live streaming camera
Source: Unsplash

Here are the essential aspects you need to look at before choosing an NDI® or NDI® |HX camera webcam factory.

Resolution And Zoom

Knowing what you want your audience to see is crucial, which is why it is vital to choose the best resolution. Optical zoom is utilized to observe and capture faraway items like license plates or faces on several PTZ cameras. If the number is higher, then the zoom is greater.


The field of view (FOV) and zoom ranges are aided by realizing the distance where the camera will be mounted. For the best field of view, PTZ cameras can have optical zoom spectra of 10x, 12x, 20x, and 30x.

Video Output

With the most recent high-efficiency edition of NDI®, it is possible to offer high-quality video with reduced latency and increased flexibility across selective bandwidth networks. If you choose a camera that supports 3G SDI and HDMI hardware output, you can collect and distribute video into traditional processes.

Motion-Based Auto Tracking

Auto tracking is a feature that allows PTZ NDI® cameras to automatically alter their field of view to follow moving objects. This function is best used in tranquil environments with little movement.

Power over Ethernet

Some cameras have this feature. With support for Power over Ethernet via POE+, it will be possible to simplify installation and decrease cabling complexity by eradicating the requirement for a distinct power supply connection (802.3at).

Remote Camera Control

PTZ cameras may be modified manually and remotely to trace skeptical activity. This feature allows users to alter the camera’s field of view without the need to visit the location.


The NDI® cameras are simple to use, and the NDI® stream operates on basic network infrastructure. It has high, medium, and low bandwidth modes. In addition, NDI® provides you with the flexibility to select from a broad range of video input references. You can also use numerous cameras and software on desktops, smartphones, and others on the network with one LAN port. Besides that, costly multi-port HDMI shifts or SDI routers are not necessary, contact us for more details.

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