The Rewind Subscription Filter rev 02 lands on the IETF Datatracker
This document proposes a Media Over Quic Transport (MOQT) extension that enables a new Subscription Filter, so that a subscriber can request that a finite number of past groups be delivered with SUBSCRIBE semantics (multiple streams, potentially incomplete) rather than FETCH semantics (single stream, complete, head-of-line- blocking). Service of this request is best-effort by the publisher, and it intended to accelerate joining a track in some use cases.
Draft Snapshot
- Draft:
draft-duke-moq-subscribe-rewind - Revision: 02
- Last updated: 2026-04-02
- Source: IETF Datatracker
Summary
This document proposes a Media Over Quic Transport (MOQT) extension that enables a new Subscription Filter, so that a subscriber can request that a finite number of past groups be delivered with SUBSCRIBE semantics (multiple streams, potentially incomplete) rather than FETCH semantics (single stream, complete, head-of-line- blocking). Service of this request is best-effort by the publisher, and it intended to accelerate joining a track in some use cases.
Analysis
This draft is directly relevant to the MOQ ecosystem and worth tracking because it reflects current protocol work or adjacent implementation guidance from the IETF process.
Abstract
This document proposes a Media Over Quic Transport (MOQT) extension that enables a new Subscription Filter, so that a subscriber can request that a finite number of past groups be delivered with SUBSCRIBE semantics (multiple streams, potentially incomplete) rather than FETCH semantics (single stream, complete, head-of-line- blocking). Service of this request is best-effort by the publisher, and it intended to accelerate joining a track in some use cases.