The State of Video Protocols 2026

In the modern broadcast landscape, the shift toward cloud-based production has redefined how we move from the camera lens to the viewer’s screen. While several protocols are competing, the choice between them often comes down to a balance of bandwidth, resilience, and budget. (or whatever hardware you have)

Legacy Connectivity

SDI

Serial Digital Interface (SDI) has been the reliable workhorse of the broadcast world for decades. Its reputation for “plug-and-play” simplicity and uncompressed, zero-latency performance is well-earned. When you plug in a BNC cable, you know exactly what you’re getting: a rock-solid signal that doesn’t care about network congestion or IP addresses.

However, the primary strength of SDI, its dedicated physical path, is also its greatest weakness in a modern, fast-moving production environment. SDI is inherently a one-way, point-to-point technology. This creates several operational hurdles:

• Manual Infrastructure: Every time a production requirement changes, a human usually has to pull a new cable, re-label a patch bay, or climb a ladder.
• Rigid Architecture: Signal paths must be meticulously planned weeks in advance. There is very little room for “audibles” once the copper is laid.
• Hardware Bloat: To move signals around a facility, you are forced to invest heavily in Distribution Amplifiers (DAs) and massive, fixed-frame SDI Routers.

While the signal quality is undeniably professional, the “total cost of ownership” for SDI infrastructure often eclipses that of modern IP networks. Expanding an SDI router typically requires purchasing expensive I/O cards or entirely new frames.

In contrast, the dynamic network switches used in NDI or SMPTE-2110 workflows allow for software-defined routing. In an IP or cloud-based environment, “wiring” a camera to a new destination is a software command, not a manual labor project. For organizations that need to scale quickly, like a growing sports league or a house of worship with multiple venues, the physical constraints of legacy SDI can quickly become an expensive anchor.

RTSP streaming

On the other end of the stream is RTSP (Real-Time Streaming Protocol). The industry workhorse for global, internet streaming for 20 years, RTSP is now available almost everywhere. While it is lightweight, it lacks the robust error correction and security features required for professional, multi-site cloud production. In a world where data integrity is paramount, RTSP often falls short of modern broadcast requirements.

Next Generation

SMPTE ST-2110

SMPTE ST 2110 remains the “Gold Standard” for uncompressed IP video. It is the powerhouse of live broadcast, capable of handling 4K and HRD with sub-millisecond latency. However, its requirements are massive: specialized 100Gbps switches, Precision Time Protocol (PTP) for sub-microsecond synchronization, and a high-level engineering team. While it offers unmatched quality, the cost of entry is often prohibitive for everyone but major networks and stadiums with dedicated dark fiber.

NDI (Network Device Interface)

With proprietary compression, NDI has matured into a 10-bit HDR powerhouse. It thrives on standard 1Gbps network infrastructure, allowing a church or city hall to use existing Ethernet wiring to route dozens of HD or 4k signals. With tools like NDI Bridge, these local sources can now be sent securely to cloud-native switchers without needing a satellite truck or massive internet connection.

SRT (Secure Reliable Transport)

If NDI owns the local network, SRT is starting to own the “First Mile” of the internet. Designed specifically to handle the jitter and packet loss of public internet connections, SRT provides a rock-solid, encrypted tunnel to the cloud. For remote municipal meetings or high school sports, it offers a fraction of the cost of dedicated fiber links while maintaining broadcast-quality stability. You can even use this over multiple wired or cell connections!

Low bandwidth wins

The reason SRT and NDI are dominating mid-market sectors is simple: Software-Defined Versatility. Unlike SMPTE-2110, which often requires proprietary hardware, SRT and NDI can run on standard workstations and cloud instances across AWS, Azure, and Google Cloud.

By leveraging these protocols, organizations no longer need to choose between “professional” and “affordable.” They can reach a global audience with the same stability used in billion-dollar infrastructure, all while maintaining a footprint that fits within a standard IT budget.

Let’s Build the Infrastructure

Successful cloud integration requires more than just picking a protocol; it requires an architecture that bridges the gap between the stadium and the cloud. Whether it’s managing HLS systems for global delivery or protecting FAST TV infrastructure from intrusions, the goal is always the same: Reliability at scale.

I can help you expand beyond SDI, to local and cloud connectivity. Proper use of these protocols allows your team to scale around your facility or the world, and add production capacity for a single event or for the long term at a price point that makes sense.