The Rise of IP-Based Broadcasting: SRT, RIST, and the End of Satellite Uplinks

For decades, getting a live video feed from a remote location to a broadcast facility meant one thing: a satellite uplink truck. At $3,000 to $10,000 per event, satellite was reliable but expensive. Today, IP-based transport protocols are dismantling that cost structure while delivering comparable reliability over commodity internet connections.

What Changed

Two technological shifts converged. First, internet bandwidth became fast and cheap — a bonded cellular connection from a LiveU unit now delivers 30 to 50 Mbps from nearly anywhere in the US. Second, purpose-built transport protocols emerged that compensate for the inherent unreliability of the internet.

Unlike simple RTMP streaming, these protocols use forward error correction, packet retransmission, and adaptive bitrate algorithms to maintain broadcast-quality video over imperfect networks. The result is near-satellite reliability at a fraction of the cost.

SRT: Secure Reliable Transport

Developed by Haivision and released as open source in 2017, SRT has become the most widely adopted IP transport protocol in broadcasting. It adds AES-128 or AES-256 encryption, handles packet loss recovery, and adapts to changing network conditions in real time.

SRT operates in three modes:

• Caller mode — the sender initiates the connection to a known receiver
• Listener mode — the receiver waits for incoming connections
• Rendezvous mode — both sides initiate simultaneously, useful for traversing firewalls

Most modern encoders, decoders, and production software support SRT natively. OBS Studio, vMix, Wirecast, and hardware from Haivision, Teradek, and Kiloview all speak SRT out of the box.

RIST: Reliable Internet Stream Transport

RIST emerged from the Video Services Forum as a standards-body alternative to SRT. While SRT is open source but controlled primarily by Haivision, RIST is an industry specification designed for interoperability between vendors.

RIST offers similar error correction and encryption capabilities. Its primary advantage is multi-link bonding — the ability to combine multiple internet connections (fiber, cellular, Wi-Fi) into a single resilient transport path. This makes RIST particularly attractive for mission-critical broadcasts where redundancy is essential.

Real-World Adoption

Major US broadcasters are already making the switch. Local news stations use bonded cellular backpacks for breaking news coverage that previously required satellite trucks. Sports networks deploy SRT encoders at venues to send camera feeds back to centralized production facilities. Corporate events stream keynotes over SRT to global audiences without renting satellite time.

A regional TV station in the Midwest reported saving over $200,000 annually by replacing three satellite truck deployments per week with SRT over bonded cellular.

The Satellite Is Not Dead Yet

Satellite still wins in two scenarios: locations with no terrestrial internet access and simultaneous distribution to hundreds of receive sites. But for point-to-point contribution — sending a single feed from the field to the studio — IP has won. The economics are simply too compelling to ignore.

If you are building a remote production workflow in 2026, SRT should be your default transport protocol. It is free, widely supported, and proven in production at every scale from local news to international sports.