moqlivemock (Eyevinn)

2026-05-17: moqlivemock v0.9.0 + warp-player v0.9.0 synchronised LOCMAF release by Torbjörn Einarsson. 3 moqlivemock PRs merged 06:47 → 09:36 UTC plus the warp-player release at 09:40 UTC: PR #85 MERGED May 17 06:47 UTC (+354/−8) “fix(audio): regenerate 10s loops with uniform MP4 sample durations” — adds utils/contentgen/trimaudio post-processor that strips whole-frame encoder priming, drops trailing short sample, trims to codec target frame count, removes the elst, and re-anchors tfdts at 0; internal/asset.go::GenCMAFChunk now emits orig.Dur. Audio-loop drift fix surfacing during multi-loop soak testing. PR #86 MERGED 08:58 UTC (+180/−1) “docs(LOCMAF): add document version banner, logo, and revision history” — adds the LOCMAF logo (light/dark via <picture>), an explicit “Document version: 0.1 (2026-05-17) — Wire-format locmafVersion: “0.1"" banner, and a revision-history table with the locmaf-vX.Y git-tag snapshot policy. First formal LOCMAF spec versioning artifact. PR #87 MERGED 09:36 UTC (+66/−7) “chore(release): prepare v0.9.0” — v0.9.0 changelog covers LOCMAF packaging + audio loop drift fix. warp-player PR #129 MERGED 09:40 UTC (+91/−13) “chore: prepare v0.9.0 release” — new src/locmaf/ module parses LOCMAF init / moof / delta-moof per v0.1 with QUIC varints + derived baseMediaDecodeTime, routed through MSE; gated on catalog locmafVersion. Eyevinn’s pre-London setup is now: LOCMAF wire format frozen at v0.1, publisher + player released together at v0.9.0, ready for interop.

2026-05-16: LOCMAF DRM documentation lands — PR #84 MERGED May 16 06:55 → 10:36 UTC by Torbjörn Einarsson (+326/−0, docs-only), “docs: add DRM section to LOCMAF.md”. New ## DRM with LOCMAF section covers: end-to-end encrypted-CMAF → LOCMAF-wire → reconstructed-CMAF → MSE/EME/CDM pipeline (mdat bytes byte-equal end-to-end so the CDM sees identical ciphertext); catalog contentProtections array + per-track contentProtectionRefIDs + DRMSystem object (systemID, robustness, laURL/authzURL/certURL, pssh); cenc vs cbcs IV-on-the-wire comparison table (cenc carries per-sample IV on every fragment, cbcs carries constant IV once in moov); byte-lossy moof reconstruction is DRM-safe (every field the CDM consumes survives the round-trip). Completes the publisher-side documentation surface for the London interim LOCMAF demonstration with warp-player (PR #120 still open). 4 PRs by tobbee in 36 hours (May 15 PRs #81, #82, #83 + May 16 PR #84).

2026-05-14 to 2026-05-15: LOCMAF tooling lands and stabilises before London — 4 LOCMAF PRs merged in 36 hours totalling ~+5215 LOC. PR #79 (hugobjoers, May 14 08:08 UTC, +2886/−83) brought initial LOCMAF support. Then Torbjörn Einarsson landed a tooling-iteration trio: PR #81 (May 15 09:36 UTC, +2115/−61) — encoder/decoder fixes (tfhd Has*() gating, signed elst.media_time, stpp/wvtt subtitle entries, BMDT discontinuity handling), a new cmd/locmaf roundtrip CLI, and a LOCMAF design doc. PR #82 (May 15 16:45 UTC, +70/−3) added an explicit locmafVersion field to the CMSF catalog (LOCMAF wire format is still evolving, e.g. field ID 10 changed semantics for absolute moofBaseMediaDecodeTime override). PR #83 (May 15 19:37 UTC, +144/−4) fixed CMSF-catalog bitrate reporting for LOCMAF tracks — calls calcLocmafBitrate (one full + one delta object pair) instead of misreporting CMAF wire bitrate (128 kbps AAC at one-sample-per-object was reporting 171.5 kbps; correct is ~131.9 kbps).

Organization: Eyevinn Technology Draft support: draft-14 and draft-16 (ALPN-based version negotiation) Packaging formats: CMSF, LOC (HEVC + AVC + AAC + Opus), MSF, moq-mi (since v0.8.0); LOCMAF v0.1 (released v0.9.0 May 17 — encoder/decoder + roundtrip CLI + design doc with logo + catalog locmafVersion: "0.1" + LOCMAF-accurate bitrate reporting + DRM section) Demo: moqlivemock.demo.osaas.io

Repositories

moqtransport (v0.8.1 — Apr 17, 2026)

• GitHub: Eyevinn/moqtransport
• Language: Go
• Description: Media over QUIC Transport library supporting draft-14 and draft-16

moqlivemock (v0.9.0 — May 17, 2026)

• GitHub: Eyevinn/moqlivemock
• Language: Go
• Description: Live MoQ publisher/subscriber with CMSF, LOC, MSF, moq-mi, and LOCMAF media support, DRM, and interop testing
• v0.9.0 highlights (May 17): LOCMAF (Low Overhead CMAF) v0.1 packaging — LOC-inspired variant of CMAF encoding only the non-derivable moof/moov fields as MoQT key-value pairs using QUIC varints (first object = full moof, subsequent objects = delta moofs); audio-loop drift fix via trimaudio post-processor; formal locmaf-vX.Y git-tag snapshot policy
• v0.8.0 highlights (May 5): HEVC support for LOC packaging, accurate per-packaging bitrate exposed in catalog, MSF/LOC/moq-mi support added

warp-player (v0.9.0 — May 17, 2026)

• GitHub: Eyevinn/warp-player
• Language: JavaScript / TypeScript
• Description: Browser-based player for CMSF media (MSE), LOC media (WebCodecs), and LOCMAF (compressed CMAF) over MoQ. Supports Widevine, PlayReady, FairPlay, and ClearKey on the MSE path.
• v0.9.0 highlights (May 17): LOCMAF v0.1 packaging support — new src/locmaf/ module parses LOCMAF init / moof / delta-moof objects per v0.1 with QUIC varints and derived baseMediaDecodeTime, routed through the MSE pipeline; gated on catalog locmafVersion. TypeScript 6 + dep bumps
• v0.8.0 highlights (May 5): WebCodecs LOC pipeline (HEVC + AVC + AAC + Opus), MSF catalog support, mute toggle UI, namespace filtering UI, Safari wt.closed rejection fix

Architecture

The stack covers the full media pipeline:

• moqtransport - Go library implementing moq-transport draft-14 and draft-16
• moqlivemock - Publisher (mlmpub) and subscriber (mlmsub) test tools, plus mlmtest for the interop-runner framework
• warp-player - Browser-based player using moq-cmsf with MSE for playback

Catalog Handling

Supports both FETCH and SUBSCRIBE for retrieving the MSF catalog. Each cmsf/* and msf/* namespace serves its own catalog describing the available tracks under that namespace. The moq-mi/clear namespace has no catalog — moq-mi is identified by namespace prefix convention (see IsMoqMINamespace in internal/sub/moqmi.go).

Media Support

• Video: H.264, HEVC
• Audio: AAC, Opus, AC-3
• Subtitles: wvtt, stpp (dynamically generated with timestamps and group numbers)
• Sync: Wall-clock synchronized — group X starts at second X, video clock aligned with UTC modulo 10s, audio beeps on seconds
• Format: CMSF (CMAF chunks over MOQT)

Namespaces

mlmpub announces a fixed set of namespaces, each carrying a different packaging and (for CMSF) protection mode. Subscribers pick a namespace to select packaging/protection:

Namespace	Packaging	Protection	Details
cmsf/clear	CMSF (CMAF chunks)	None	Unencrypted CMSF — default for mlmsub
cmsf/drm-{scheme}	CMSF (CMAF chunks)	Commercial DRM	Widevine, PlayReady, FairPlay via CPIX; {scheme} = cenc or cbcs
cmsf/eccp-{scheme}	CMSF (CMAF chunks)	ClearKey / ECCP	Explicit key delivery via HTTP /clearkey side endpoint
msf/clear	LOC (raw codec frames)	None	MSF catalog describing LOC tracks (HEVC + AVC + AAC + Opus)
moq-mi/clear	moq-mi	None	MoQ Media Interop format (no catalog; convention-based namespace prefix)

All five namespaces are announced concurrently when mlmpub runs, so subscribers can choose the packaging and protection model independently. The CMSF DRM/ECCP namespaces are only announced when a DRM config or ClearKey IV/KID is provided.

CMSF ContentProtection

The CMSF ContentProtection signaling spec (moq-wg/cmsf PR #18, merged Apr 14) was proposed by Eyevinn based on the moqlivemock implementation. DRM support in moqlivemock and warp-player was implemented by Hugo Björs (Eyevinn). warp-player supports Widevine, PlayReady, FairPlay, and ClearKey/ECCP. It was the first running implementation, now joined by shaka-player (PR #9972, also merged Apr 14).

LOCMAF (Low Overhead CMAF) — experimental, in PR

Eyevinn/moqlivemock PR #79 (Hugo Björs, OPEN since May 7 2026, +2697/−83, 17 files) and Eyevinn/warp-player PR #120 (+2211/−188, 14 files) introduce LOCMAF — a compact LOC-inspired/compatible CMAF packaging format for MoQT. Master’s-thesis context, with measurements pending. See media-packaging for the full design and comparison vs. compressed-mp4. A separate warp-player branch tests LOCMAF + DRM (not in PR #120).

Demo

• Live demo: moqlivemock.demo.osaas.io
• shaka-player by Álvaro Velad Galván (Atème) works with moqlivemock including subtitle display and DRM

Interop

• shaka-player subscribing to moqlivemock publisher (including CMSF ContentProtection)
• mlmtest client available for the interop-runner framework
• Draft-16 support opens interop with moq-rs, moxygen, libquicr, and other draft-16 implementations

Related

• moq-transport - Protocol spec
• moq-cmsf - CMAF format used by warp-player
• media-packaging - LOC vs CMAF approaches
• interop-status - Cross-implementation testing