IP Based Video Wall Controller Technology
1. Overview of video wall controller over IP
The growing popularity of video wall control technology is supported by a number of factors, including increased demand for large but cost-effective video walls, the need for flexible and scalable solutions, and the adoption of AV-over-IP technology. Video Wall Control over IP promote the development of scalability and flexibility compared to traditional video wall technologies. It offers the possibility to integrate multiple networked processing nodes or devices together to create a single canvas.
2. Unique advantages of IP Based Video Wall Controller
IP Based Video Wall Controller has many unique advantages than traditional video wall controller, such as Windows-based or FPGA-based technology. Let's take a closer look at these major advantages.
Flexible & Scalable. Traditional video walls are limited in size. It's based on the number of cards or modules an enclosure or chassis can hold; at the same time, controller video walls are incredibly scalable -- theoretically infinite in size. To expand a controller video wall, simply add another node to increase output or increase processing power, which is easy, more feasible, and more cost-effective.
High Stability and Reliability. Hardware failures in traditional video wall controllers can affect the entire video wall and cause the entire video wall to lose visibility. Fortunately, hardware failures in controller video wall deployments only affect that portion of the video wall powered by a particular node or device.
Cost-effectiveness. Due to the reduced hardware requirements, the overall cost of a controller video wall is greatly reduced. Controller video walls eliminate bulky hardware and reduce the need for cables and extenders, because the small size of the nodes allows them to be mounted directly behind monitors rather than in distant racks. These nodes only need to be connected to power and the network, which also eliminates the need for high-resolution video expanders.
3. Challenges of Video Wall Control over IP solution
While controller video walls have many advantages, there are still some challenges and perceptual limitations.
How to reduce bandwidth to reduce the IT infrastructure cost
There are several AV over IP coding technology, such as H.265, H.264, SDVoE, JPEG2000, V2C etc. SDVoE is no compression technology, whose video streaming bandwidth will be near to original, it means 4K@60Hz video could be up to 18 Gbps each streaming, which requires the 10 Gigabit Switch as access at least. However, it could be used for small system only rather than the large system requried multiple streaming or sites collaboration.
Therefore, it's important to reduce the streaming bandwidth to transmit the video for more flexible architecture and reducing IT infrastructure cost, as well as easier to integrate with 3rd party system, such as CCTV Platform, AI resource etc.
How to ensure Image Quality:
It's a huge challenges for AV over IP technology to ensure the image quality after compressing and transmit the video over low bandwidth network. AVCiT adopts H.265 (HEVC) coding technology with talented ASE image processing technology, which achieves 4:4:4 chroma to ensure the full color sampling, so that the image could be near original quality after high ratio compression and transmit over 4-20 Mbps Bandwidth.
How to ensure low latency:
It's another huge challenges to reduce the video latency when video is compressed and transmitted over low bandwith, especially over 1 Gigabit network. AVCiT unique ASE technology can ensure the video latency less than 28 ms and make operator visually zero latency.
4. Why Video Wall Controller over IP technology is more and more popular?
The progress of the AV-over-IP transition, the convergence of AV and IT, the affordability of the network, display and required equipment, and the market demand for more flexibility and interoperability have created a unique demand for controller video wall products, so as to meet and resolve all challenges and constraints.