QUICast Multicast delivery with QUIC

For mass events and live streaming

Stop sending the same stream millions of times.

QUICast combines multicast delivery with QUIC-era transport patterns: secure verification metadata and graceful unicast fallback when multicast is not available.

Efficiency
Network replication instead of per-viewer duplication
Security
Verification metadata over secure unicast channels
Resilience
Unicast fallback when multicast is unavailable

Problem

Live events still scale like every viewer is unique.

Duplicate delivery

Everyone watches the same bits, but unicast streaming sends them user-by-user.

Infrastructure strain

Origins, CDNs, and backbones need expensive headroom for the exact moments demand peaks.

Delay spread

Viewer-to-viewer latency grows when every connection has its own delivery path.

Solution

Multicast efficiency with modern verification and fallback.

One-to-many media

Send common live media once and let the network replicate packets efficiently.

Secure control

Keep verification, integrity, and operational metadata on authenticated unicast paths.

Hybrid deployment

Use multicast where available and keep a normal unicast path for incompatible networks.

Live demo

Try the public player.

The live demo shows QUICast's browser delivery path in action. It starts playback when the browser and network support the required secure transport APIs, and explains what to change when they do not.

Status

Research path, demo path, operating path.

Current state

QUIC multicast extensions exist today, but production hardening still needs pilots.

What is needed

Robust clients, operational tooling, and real-world operator or ISP experiments.

Next steps

Pilots focused on measurable bandwidth savings and better live-event synchronization.

Contact

Technical briefing or pilot discussion

Reach out for integration paths, pilots, or a deeper architecture walk-through.