Setting up a 4k network using IP and SDI platforms

Two SMPTE-2110 or 12G-SDI IP platforms can be used to implement a 4K network. Choosing either of these two methods has its strengths and weaknesses that will be briefly mentioned in this blog.

Using the IP platform to transmit the 4K signal :
One of the important issues in the broadcast industry is whether or not to move from the SDI platform to the IP platform. This is important because most broadcast equipment manufacturers now market their products in such a way that the choice of both platforms is available for Broadcasters. One of the important issues in designing IP-based devices is choosing the right network equipment. By examining modular and fixed switches with SDN support and ensuring that the required features of an IP video transfer cycle are met, Leaf and Spine switches are selected based on the number of inputs and outputs required.

The difference between the price and the type of use of single-mode and multi-mode SPFs is another important issue that can significantly increase the cost of designing and implementing IP infrastructures. For this reason, in most cases where IP infrastructure is used, the construction of a new building with the desired IP infrastructure is essential.

In designing SDI-based systems, the main function of a broadcast controller system is to communicate with the SDI router and other controllable equipment. in an IP-based system, in addition to communicating with potential SDI routers in the system, the broadcast controller also needs to communicate with the SDN controllers of the network equipment and edge devices.

Synchronization (Orchestration) servers are used to ensure proper coordination of this process and to monitor all the processes that will take place in the IP network. Using the concept of synchronization, it will be possible for different brands of products to work together. A coordinator will link all the operations together and adjust the work dynamically as needed. As a result, the media flow will be synchronized in any way you can imagine. This is done through resource control, control of network switches in the system, control of network equipment, and integrated midnight SDN controllers related to different brands and companies.

One of the important points in using the IP platform is to pay attention to the use of products that support the desired specifications of AMWA (Advanced Media Workflow Association) and NMOS (Network Media Open Specification).

According to the latest document recently submitted by the EBU, the issue of security is one of the serious challenges in systems development based on the SMPTE-2110 standard, which may not be resolved soon.

Using SDI platform to transmit 4K signal

If the 12G-SD platform is used, the allowable range of cable length, return drop, jitter, etc. will change significantly and it is necessary to pay attention to this issue in the design of 4K systems.

Accordingly, various companies producing cables, connectors, patch panels, etc., have been widely marketing their UHD products for the past 5-years to meet the needs of broadcasters in launching TV stories in UHD format.