RIST vs. SRT vs. Zixi: Choosing Media Transport

Moving video over the open internet requires protocols that can handle packet loss, jitter, and variable bandwidth. By 2025, three names dominate: RIST, SRT, and Zixi. Each has strengths and trade‑offs.

RIST

RIST (Reliable Internet Stream Transport) is an open standard from the Video Services Forum. It emphasizes interoperability, simplicity, and security. It’s attractive for broadcasters who want standards‑based solutions without vendor lock‑in.

SRT

Secure Reliable Transport (SRT) is open source and widely adopted. It focuses on low‑latency delivery with encryption. SRT is popular in contribution workflows and among cloud service providers.

Zixi

Zixi is a commercial solution with advanced features like hitless failover, analytics, and network bonding. It’s used heavily in premium contribution and distribution where support and tooling justify the cost.

Choosing the Right Fit

• Standards focus: Pick RIST.
• Open source ecosystem: SRT is the clear winner.
• Full service platform: Zixi delivers, but at a price.
  

Practical Advice

Test each option in real conditions. Performance varies depending on networks, latency budgets, and monitoring needs. Many broadcasters use a mix: SRT for contribution, RIST for distribution, and Zixi where enterprise features are required.

All three solve the same problem but with different philosophies. The right choice depends on priorities: openness, ecosystem, or enterprise support.