AES67 Visualizer

A cross-platform AES67 / ST2110-30 / RAVENNA / Dante audio stream visualization and monitoring application.

Features

SAP/mDNS Discovery: Automatic detection of AES67, RAVENNA and Dante streams
Manual SDP Streams: Add streams by pasting SDP directly (no SAP required)
Auto-play: Automatically resume playback on startup with saved SDP + channel mapping
Dante ARC: Query Dante devices directly (name, model, TX/RX channels, channel names)
Device Panel: Per-device view with expandable TX/RX channel list
Monitoring Wall: Drag-and-drop streams to 16-slot monitoring wall
Real-time Meters: dBFS level meters with peak hold
Audio Playback: Listen to any stream with channel selection
PTP Monitoring: Track IEEE 1588 grandmaster and lock status per stream
Multi-language: 8 languages (EN, FR, DE, ZH, JA, KO, ES, IT)
Cross-platform: Windows, macOS, Linux

Tech Stack

Frontend: React 19 + TypeScript 7 + Vite 8 + TailwindCSS 4
Desktop: Electron 43
Audio: Audify (RtAudio bindings)
SDP Parsing: sdp-transform 3
Drag & Drop: @dnd-kit/core + @dnd-kit/sortable

Installation

git clone https://github.com/dewiweb/aes67_visualizer.git
cd aes67_visualizer
npm install
npm run dev:app       # development
npm run build:win     # Windows build (NSIS installer + portable exe)
npm run build:linux   # Linux build (AppImage)
npm run build:mac     # macOS build (DMG)

Architecture

electron/
├── main.cjs                  # Electron main process / IPC orchestration
├── preload.cjs              # Context bridge API
├── processes/
│   ├── discovery.cjs        # mDNS + ARC + RTSP discovery (child process)
│   ├── sdp.cjs              # SAP/SDP multicast listener (child process)
│   ├── audio.cjs            # RTP audio playback (child process)
│   ├── meters.cjs           # Level monitoring (child process)
│   └── ptp.cjs              # PTP IEEE 1588 monitoring (child process)
└── protocols/
    ├── arc.cjs              # Dante ARC binary UDP protocol (port 4440)
    ├── rtsp.cjs             # RAVENNA RTSP stream discovery (RFC 2326)
    ├── mdns.cjs              # mDNS/DNS-SD — dns-sd (Windows/macOS) or avahi-browse (Linux)
    ├── sap.cjs              # SAP RFC 2974 multicast socket
    ├── aes67.cjs            # AES67 SDP validation & PTP parsing
    └── ravenna.cjs          # RAVENNA device helpers & RTSP path builder
src/
├── components/
│   ├── DevicePanel.tsx      # Per-device view with ARC channel names
│   ├── MonitoringWall.tsx   # 16-slot monitoring wall
│   └── ...
└── types/index.ts           # TypeScript definitions incl. DanteDevice

Protocol Support

Audio Formats

Format	Support
L24 (24-bit PCM)	✅
L16 (16-bit PCM)	✅
1–64 channels	✅
44.1 / 48 / 88.2 / 96 / 192 kHz	✅

Protocol Matrix

Standard	Discovery	Audio Transport	Control	PTP
AES67	SAP `239.255.255.255:9875`	RTP multicast `239.x.x.x`	—	PTPv2 IEEE 1588-2008
RAVENNA	mDNS `_ravenna._tcp` + SAP	RTP multicast `239.x.x.x:5004`	RTSP `:554`	PTPv2 IEEE 1588-2008
Dante native	mDNS `_netaudio-arc._udp`	RTP unicast/multicast `239.x.x.x:4321`	ARC UDP `:4440`	PTPv1 IEEE 1588-2002
Dante AES67	SAP `239.255.255.255:9875`	RTP multicast `239.x.x.x`	ARC UDP `:4440`	PTPv2 IEEE 1588-2008
ST2110-30	SDP out-of-band	RTP multicast	NMOS IS-05	PTPv2 IEEE 1588-2008

Network Port Reference

AES67 / RAVENNA

Port	Protocol	Direction	Usage
`9875` UDP	SAP RFC 2974	multicast `239.255.255.255`	Stream announcements (SDP)
`5353` UDP	mDNS	multicast `224.0.0.251`	Device discovery DNS-SD
`554` TCP	RTSP RFC 2326	unicast	SDP retrieval (`/by-name/<stream>`, `/by-id/<n>`)
`5004` UDP	RTP RFC 3550	multicast `239.x.x.x`	Audio transport (default RAVENNA port)
`319` UDP	PTPv2 event	multicast `224.0.1.129`	PTP sync, delay-req messages
`320` UDP	PTPv2 general	multicast `224.0.1.129`	PTP announce, follow-up messages

Dante Native

Port	Protocol	Direction	Usage
`5353` UDP	mDNS	multicast `224.0.0.251`	Device discovery (`_netaudio-arc._udp`, `_netaudio-chan._udp`, etc.)
`4440` UDP	ARC (binary)	unicast	Device control: name, channels, subscriptions
`4455` UDP	DBCP flows	unicast	RTP flow creation/deletion (`start_code=0x1102`)
`8700` UDP	Settings	unicast	Device settings (sample rate, latency…)
`8702` UDP	Device info	multicast `224.0.0.231`	Device info, routing state
`8708` UDP	Heartbeat	multicast `224.0.0.233`	Keep-alive
`8751` UDP	Metering	multicast `224.0.0.231`	VU-meter data
`8800` UDP	CMC clock	unicast	Clock domain management
`4321` UDP	RTP	multicast `239.x.x.x`	Audio transport (native Dante multicast)
`319/320` UDP	PTPv1	multicast `224.0.1.129`	IEEE 1588-2002 — incompatible with PTPv2

Dante AES67 mode (differences vs native)

Aspect	Dante native	Dante AES67
Stream announcement	mDNS only	+ SAP `239.255.255.255:9875` (keyword `k=Dante`)
Audio transport	unicast + multicast	multicast only
Audio port	`4321` (fixed)	dynamic (from SDP)
PTP version	PTPv1 (1588-2002)	PTPv2 (1588-2008)
Codec	proprietary	L16/L24, 48kHz only
Activation	—	`MESSAGE_TYPE_AES67_CONTROL` via ARC `:4440`

⚠️ PTP conflict risk: Dante native (PTPv1) and RAVENNA/AES67 (PTPv2) cannot share a PTP grandmaster. Running both on the same network segment without VLAN isolation can destabilize clock sync for all devices.

Dante ARC Protocol

The ARC (Audio Routing Control) protocol uses a binary UDP format on port 4440.

Packet header (10 bytes, big-endian):

start_code(2=0x27FF) + total_length(2) + seqnum(2) + opcode(2) + result_code(2) + content[]

Key opcodes:

Opcode	Description
`0x1000`	Channel count (TX + RX)
`0x1002`	Device name
`0x1003`	Device info (board, revision, hostname)
`0x2000`	TX channel list (paginated)
`0x2010`	TX channel friendly names
`0x3000`	RX channel list + subscription status
`0x3010`	Set channel subscriptions (routing)
`0x2201`	Create multicast TX flow
`0x3200`	Query RX flows

Result codes: 0x0001 = OK, 0x8112 = OK (more pages), 0x0022 = error

Sources & References

Open Source Projects Studied

All projects below were used as protocol and architecture references only — no source code was copied. This project remains under MIT License and is fully compatible with all referenced works.

Project	Licence	Language	What it provided
philhartung/aes67-monitor	MIT	JS/Electron	SAP socket (`socket.bind(9875)`), SAP announcement (`announceStream` → `239.255.255.255:9875`), SAP session ID from `o=` line (MD5 hash), stream timeout 5min, `sdp-transform` library, RTP playback via `audify`/RtAudio, jitter buffer, multicast bind `client.bind(5004)`
Digisynthetic/aes67-stream-monitor	Proprietary	JS/Electron	Architecture reference only: SAP `SapDiscovery` class, Monitoring Wall UI concept, i18n approach
chris-ritsen/network-audio-controller	MIT	Python	Dante ARC protocol opcodes, packet format, const.py
teodly/inferno (mirror of lumifaza/inferno)	GPL-3.0	Rust	ARC packet header layout, pagination (`0x8112`), flows control port 4455, mDNS service types `_netaudio-chan`, `_netaudio-bund` — protocol reference only, no code included
soundondigital/ravennakit	AGPLv3	C++	RAVENNA RTSP paths (`/by-name/`, `/by-id/`), RTP port 5004, PTPv2 profiles, DNS-SD service types — protocol/spec reference only, no code included
martim01/pam	MIT	C++	AES67/RAVENNA/ST2110 monitor — confirms RTP port 5004, RTSP port 554, PTP domain from `a=ts-refclk`/`a=clock-domain` SDP attributes, PTP hybrid mode, AM824 codec
bondagit/aes67-linux-daemon	GPL-3.0	C++	AES67 Linux daemon: SAP+mDNS+RTSP, REST API, React WebUI — protocol reference only, no code included

Standards & Specifications

Standard	Description
AES67-2023	Audio over IP interoperability standard (L16/L24, PTPv2, SAP/SDP)
IEEE 1588-2008 (PTPv2)	Precision Time Protocol v2 — used by AES67, RAVENNA, Dante AES67
IEEE 1588-2002 (PTPv1)	Precision Time Protocol v1 — used by Dante native
RFC 2974	Session Announcement Protocol (SAP) — multicast `239.255.255.255:9875`
RFC 2326	Real Time Streaming Protocol (RTSP) — used by RAVENNA
RFC 3550	RTP: A Transport Protocol for Real-Time Applications
SMPTE ST 2110-30	Professional Media over Managed IP Networks — Audio

Test Devices (local network)

Device	Protocol	IP	Notes
Lawo MADI4	RAVENNA/AES67	`192.168.100.228`	64ch MADI, announces via SAP
Lawo MC²36	RAVENNA/AES67	`192.168.100.229`	Console, multiple SAP streams
Shure AD4Q-I	Dante (AES67)	`192.168.100.213`	64TX/1RX, ARC responds with channel names (HF1–HF64)
Shure AD4Q-II	Dante (AES67)	`192.168.100.214`	64TX/1RX, ARC responds with channel names (HF5–HF8…)

License

MIT License — See LICENSE file for details.

Name		Name	Last commit message	Last commit date
.github/workflows		.github/workflows
build		build
electron		electron
scripts		scripts
src		src
.gitignore		.gitignore
AGENTS.md		AGENTS.md
BUILD.md		BUILD.md
CHANGELOG.md		CHANGELOG.md
README.md		README.md
index.html		index.html
package-lock.json		package-lock.json
package.json		package.json
postcss.config.js		postcss.config.js
tailwind.config.js		tailwind.config.js
tsconfig.json		tsconfig.json
tsconfig.node.json		tsconfig.node.json
vite.config.ts		vite.config.ts

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AES67 Visualizer

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Tech Stack

Installation

Architecture

Protocol Support

Audio Formats

Protocol Matrix

Network Port Reference

AES67 / RAVENNA

Dante Native

Dante AES67 mode (differences vs native)

Dante ARC Protocol

Sources & References

Open Source Projects Studied

Standards & Specifications

Test Devices (local network)

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AES67 Visualizer

Features

Tech Stack

Installation

Architecture

Protocol Support

Audio Formats

Protocol Matrix

Network Port Reference

AES67 / RAVENNA

Dante Native

Dante AES67 mode (differences vs native)

Dante ARC Protocol

Sources & References

Open Source Projects Studied

Standards & Specifications

Test Devices (local network)

License

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