Meta Deploys Media over QUIC for Instagram Live Ingest
Meta has officially begun deploying Media over QUIC (MoQ), an emerging open protocol for real-time video streaming at scale, starting with Instagram Live ingest across mobile applications.
Radwan AbdulhadiEditor and technology writer
Transitioning Instagram Live to MoQ
Meta has begun deploying Media over QUIC (MoQ), an emerging open protocol designed for real-time video streaming at scale. As detailed by Meta Engineering, this deployment aims to simplify the company's protocol stack for live streaming video and enhance the overall user experience.
Instagram Live now utilizes the open standard transport protocol Media over QUIC (MoQ) for live video ingest on both iOS and Android. Designed for both ingest and playback, MoQ establishes a foundational architecture that offers lower latency and greater network resilience for creators and viewers alike.
Evolution From RUSH to Modern Standards
For nearly a decade, live streaming video across Meta's infrastructure operated on Reliable Ultra-low-latency Streaming over HTTP (RUSH), an in-house QUIC-based protocol created as an alternative to RTMP. While RUSH successfully proved that QUIC could carry live media at scale, the move to MoQ shifts development from a proprietary protocol to a collaborative, shared standards effort.
The emerging IETF standard enables low-latency and scalable media delivery over the QUIC transport layer. The specification is being developed collaboratively with active participation from organizations including Meta, Google, Akamai, Cisco, Cloudflare, and academic institutions.
Key Technical Properties of MoQ
MoQ introduces several architectural advantages by being built natively on QUIC. Independent streams can make progress without traditional cross-stream head-of-line blocking, while also benefiting from faster connection setups and connection migration capabilities.
In addition to avoiding TCP-style bottlenecks, MoQ incorporates native fan-out and caching directly into its design through a network of relays. These relays cache and forward addressable streams of media objects called Tracks without needing to parse the underlying media payloads.
The protocol also allows for tunable latency per use case, track-aware delivery that prioritizes objects under loss, first-class media context for adaptive bitrate logic, and a standards-based TCP fallback mechanism when QUIC connections are blocked.
Implementation and Edge Translation
Meta chose Instagram Live for its initial MoQ rollout because it serves users at scale, effectively validating the protocol against demanding ingest workloads. Furthermore, achieving metric parity without user-visible regressions establishes a clean baseline for future explorations like live playback.
To integrate the new protocol across mobile applications without forcing an immediate rewrite of downstream backend systems, Meta utilized moxygen, an open-source MoQ library that provides publisher, subscriber, and relay roles alongside custom media handlers.
During this rollout, MoQ ingest connections terminate on dedicated edge endpoints. A specialized translation layer then converts the incoming MoQ frames into the existing RUSH format that the backend already understands.
Industry Presentation and Future Outlook
The engineering work behind deploying MoQ for Instagram Live ingest was formally presented at DEMOQED 2026. By shifting from proprietary protocols to an open standard, Meta aims to unify its infrastructure across live video, real-time communication, and generative AI creation tools.
Sources
- Meta EngineeringShipping Media Over QUIC at Meta Scale for Instagram Live Ingest
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