TeamsISO

Per-participant NDI ISO controller for Microsoft Teams.

TeamsISO sits between Microsoft Teams' raw NDI broadcast output and a live-production environment. It receives each participant's NDI stream, normalizes framerate / resolution / aspect / audio per a configured target, and re-emits clean, individually-addressable NDI sources for ingestion by a switcher — vMix, OBS, Ross, hardware capture.

Status: v1.0.0 — first general release. Windows only. Requires Microsoft Teams (with NDI broadcast enabled) and the NDI 6 runtime.

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What it does

• Discovers participants as Teams broadcasts each one over NDI. Cleans the Teams-prefixed source name down to a readable display name.
• Normalizes feeds to a consistent framerate, resolution, aspect mode, and audio routing — so the downstream switcher gets predictable inputs regardless of what each participant's webcam is doing.
• Routes per-participant as separate NDI sources with a configurable per-row output name. Default is the speaker's display name; override inline in the participants table.
• Records each ISO to disk simultaneously — raw BGRA + manifest.json
  • FFmpeg convert.cmd — so post-production gets a clean per-guest archive.
• Embeds Teams orchestration: launch / stop Teams, hide its UI windows during a show, drive in-call controls (mute, camera, share, leave, raise hand) without leaving the operator console.
• Operator presets save the current per-participant ISO assignment and custom output names, applicable on next launch automatically.
• Live preview thumbnails in the participants table, plus pop-out floating preview windows for multi-monitor monitoring.
• External control surface — REST + WebSocket on 127.0.0.1:9755 and OSC on UDP 127.0.0.1:9000 for Bitfocus Companion / Stream Deck / TouchOSC. Self-contained HTML panel at /ui for phone-as-controller.
• Theme-aware — dark and light palettes, system-following or pinned. The Wild Dragon mark and watermark flip to match.

Install

Grab the latest MSI from the Releases page, double-click, and accept the install prompts. Per-machine install under C:\Program Files\Wild Dragon\TeamsISO.

Prerequisites:

• Windows 10 / 11, 64-bit
• .NET 8 Desktop Runtime
• NDI 6 Runtime (the installer warns if missing but does not block — operators can stage the app before NDI is rolled out)
• Microsoft Teams (NDI broadcast enabled in admin policy)

Configure

First-run defaults work for most setups. If your downstream switcher needs a particular framerate / resolution / NDI group routing, open the gear icon in the header to access the settings drawer:

• Output — framerate, resolution, aspect mode, audio routing
• Network — NDI discovery and output group names
• App — recording paths, startup behavior, theme

Per-participant overrides — click the CFG column gear on any row to override framerate / resolution / aspect / audio for just that participant.

Keyboard shortcuts

Key	Action
F1	Open help / cheat sheet
Ctrl + K (or Ctrl + P)	Open the command palette
Ctrl + T	Toggle theme (dark ↔ light)
Ctrl + M	Drop a timestamped marker into every active recording
Ctrl + Shift + S	Stop every running ISO (emergency)
Ctrl + R	Refresh NDI discovery (rebuild finder)
1–9 / NumPad 1–9	Toggle the Nth visible participant's ISO

File locations

Path	Contents
%APPDATA%\TeamsISO\config.json	Engine settings (framerate, NDI groups, etc.)
%LOCALAPPDATA%\TeamsISO\presets.json	Saved operator presets + auto-apply preference
%LOCALAPPDATA%\TeamsISO\logs\	Rolling daily diagnostic logs
%LOCALAPPDATA%\TeamsISO\Notes\	Per-day show-notes markdown files
%USERPROFILE%\Videos\TeamsISO\<date>\	Default recording output
%APPDATA%\NDI\ndi-config.v1.json	NDI Access Manager group routing

Documentation

• Control surface API — REST, WebSocket, and OSC reference with curl recipes and a Companion config example.
• Real-time recording — recorder format, manifest schema, and the FFmpeg conversion path.
• Releasing — tag-push workflow and MSI signing.

Build from source

Requires the .NET 8 SDK on Windows. WPF is the only host.

dotnet restore TeamsISO.Windows.slnf
dotnet build   TeamsISO.Windows.slnf -c Release
dotnet test    TeamsISO.Windows.slnf --filter "Category!=ndi&requires!=ndi"

Or use the included helper:

pwsh -File .\build-and-test.ps1

To produce a fresh MSI:

dotnet publish src\TeamsISO.App\TeamsISO.App.csproj `
    -c Release -r win-x64 --self-contained false `
    -o publish\TeamsISO
dotnet build installer\TeamsISO.Installer.wixproj -c Release
# Output: installer\bin\x64\Release\TeamsISO-Setup-<version>.msi

License

Proprietary, © Wild Dragon LLC 2026. All rights reserved.