The challenge in live broadcasting lies not only in moving content from point A to point B, but also in finding the right media fit. Networks need to meet the demands of premium live content, which include a near-perfect uptime, resiliency, and scale. The “five nines”, 99.999% availability, are often cited as the standard by the industry, but how can you achieve this with today’s networks?
In the most recent episode of the Satellite World Briefing, Ruben Calzadilla, Senior Technical Advisor at SES, and Dr. Ciro Noronha, CTO of Cobalt Digital and the President of the RIST Forum, joined host Lucas Hunsicker to discuss how hybrid satellite-IP models are delivering the right media fit for today’s broadcasters.
Why Hybrid Distribution Matters for High Availability
Hybrid distribution combines the efficiency of satellite for one-to-many delivery with IP’s ability to fill gaps caused by external factors such as rain fade. As Dr. Noronha explained, “Satellite is very good for heavy lifting. If you need to send the same content to many locations, it’s the ideal solution. But sometimes, external factors like interference or rain fade prevent certain sites from receiving the signal reliably. That’s where hybrid distribution comes in to fix those holes using the internet.”
Calzadilla emphasized how sustainable this approach is by stating, “Satellite handles scale, internet ensures resiliency, and together, they form a model that’s both efficient and future-proof.”
For broadcasters, high availability refers to a signal that is always present with minimal interruptions. Even short outages can cause damage to a company’s reputation or lost ad revenue. It’s more about how fast a system recovers than uptime. Hybrid models are designed to anticipate failure and adapt quickly to ensure that glitches are invisible to end viewers.
From Internet Limitations to Practical Five Nines
Despite high advertised uptime, the public internet is an oversubscribed, best-effort network. Congestion during peak hours can degrade throughput, which is critical for live video. Although they can add redundancy, dual ISPs can’t universally guarantee consistent performance at higher bitrates. As Dr. Noronha put it, “Anytime you use the internet, you’re taking chances.”
That’s where hybrid satellite-IP excels. Dual ISPs may approach five-nine availability at lower bitrates, but reliability quickly falls apart as throughput increases. Hybrid models make true broadcast-grade reliability scalable and feasible by relying on satellite to provide the full stream deterministically and using IP only for targeted packet recovery.
Backward-Compatible Innovation
The in-band method, which embeds small amounts of information into the satellite transport stream, is one of the most promising technical advances. While upgraded sites use it to request missing data via IP, legacy receivers ignore it. This guarantees bandwidth efficiency and backward compatibility, allowing broadcasters to roll out hybrid systems gradually without interfering with existing infrastructure.
The Hybrid Advantage
Although large-scale content delivery via terrestrial networks is theoretically possible, this approach isn’t realistic because of the absence of widespread multicast support on the internet. Duplicating packets is necessary when distributing the same stream to multiple sites, driving up both cost and operational complexity. For point-to-multipoint distribution, satellite is the most effective solution. When combined with IP-based resiliency, it offers broadcasters an extremely reliable and efficient delivery model.
As Calzadilla summarized, the combination of satellite and IP “creates a system that is cost effective and robust.” With methods like in-band recovery enabling gradual adoption and standards like RIST promoting interoperability, hybrid distribution is becoming the media fit for the future of broadcast reliability.
