WildDragonLLC/teamsiso
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Per-Participant NDI ISO Controller for Microsoft Teams. Receives Teams NDI streams, normalizes framerate/resolution, and re-emits clean ISO outputs for live production switchers (vMix, OBS, Ross). Wild Dragon LLC.
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Zac Gaetano 1cdd4ebd04
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Details
fix(installer+wpf): REVERT runas /trustlevel demotion (it was the bug, not the fix) 
Massive misdiagnosis correction. The 2025-05-16 effort to 'fix elevation' has been actively breaking every Start Menu / Desktop shortcut launch since rc7. Empirical retrace:

  - Elevated PowerShell -> Process.Start(exe) -> elevated TeamsISO -> WORKS
  - Elevated PowerShell with --keep-elevation -> elevated TeamsISO -> WORKS (vm.Participants.Count=2)
  - Non-elevated PS Process.Start(exe) -> medium TeamsISO -> WORKS
  - ANY launch through runas /trustlevel:0x20000 -> SAFER-restricted TeamsISO -> BROKEN (window appears, zero managed code runs past BAML parse, no logs, no port binds)

The SAFER-restricted token that runas /trustlevel produces breaks .NET 8 WPF apphost in a way that leaves the process apparently alive (with the MainWindow.xaml rendering the empty state from default property values) but executing zero managed code. So my StartupTrace, Serilog file sink, and ControlSurface bind all silently failed for every shortcut launch. Looked exactly like 'cold-start NDI Find stuck at zero' from the outside but had nothing to do with NDI.

Revert:
  - installer/Package.wxs: shortcuts target the .exe directly, no runas wrapper
  - App.xaml.cs: removed ShouldDeElevate, TryDeElevateAndExit, RelaunchEnvVar, --keep-elevation/--relaunched handling. The check is gone, not just disabled, so future-me can't bring it back without re-discovering the same bug.

Kept:
  - StartupTrace (still useful for any future startup mystery)
  - Self-healing NDI Find rebuild (c30a616) - still valuable for legitimate stuck-finder cases
  - System.Management PackageReference - TryGetParentProcessName still used in StartupTrace

Verified post-revert: Start Menu shortcut click -> PID 43060 -> full trace -> REST 2 participants. 252/252 tests still passing.
2026-05-16 16:27:23 -04:00
.forgejo/workflows ci: optional MSI + exe code-signing in release.yml 2026-05-10 09:41:28 -04:00
docs chore(docs): reconcile to WPF-only after WinUI 3 was abandoned 2026-05-15 19:16:20 -04:00
installer fix(installer+wpf): REVERT runas /trustlevel demotion (it was the bug, not the fix) 2026-05-16 16:27:23 -04:00
src fix(installer+wpf): REVERT runas /trustlevel demotion (it was the bug, not the fix) 2026-05-16 16:27:23 -04:00
.editorconfig chore: scaffold repo conventions and global build props 2026-05-07 15:07:53 +00:00
.gitignore chore(docs): reconcile to WPF-only after WinUI 3 was abandoned 2026-05-15 19:16:20 -04:00
build-and-test.ps1 chore: sweep orphaned files (UpdateChecker, UpdateBanner, TeamsControlBridge, helper scripts) 2026-05-10 09:42:29 -04:00
CHANGELOG.md chore(docs): reconcile to WPF-only after WinUI 3 was abandoned 2026-05-15 19:16:20 -04:00
commit-and-push.ps1 chore: trim stale batch-commit script + drop SmokeTest placeholder 2026-05-15 20:16:14 -04:00
coverlet.runsettings ci: enforce 80% line coverage gate on TeamsISO.Engine 2026-05-07 15:16:11 +00:00
DESIGN.md chore(docs): reconcile to WPF-only after WinUI 3 was abandoned 2026-05-15 19:16:20 -04:00
Directory.Build.props chore: scaffold repo conventions and global build props 2026-05-07 15:07:53 +00:00
NEXT_STEPS.md docs(next-steps): NDI Find stuck-at-zero was the real bug; self-heal in c30a616 2026-05-16 13:36:58 -04:00
PRODUCT.md feat(wpf): v2 'Studio Terminal' shell - theme system, header, transport strip, drawer 2026-05-14 12:46:24 -04:00
README.md chore(docs): reconcile to WPF-only after WinUI 3 was abandoned 2026-05-15 19:16:20 -04:00
TeamsISO.Linux.slnf feat(console): add TeamsISO.Console headless smoke runner 2026-05-07 15:37:44 +00:00
TeamsISO.sln feat(wpf): rollback to WPF host, axe recording, fix settings pane 2026-05-14 06:02:40 -04:00
TeamsISO.Windows.slnf chore(docs): reconcile to WPF-only after WinUI 3 was abandoned 2026-05-15 19:16:20 -04:00

README.md

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 into a switcher (vMix, OBS, Ross, hardware capture).

What it does

  • Discovers participants as Teams broadcasts each one over NDI, surfacing the operator-friendly display name (handles current "MS Teams - Name" format and the legacy "(Teams) Name" format).
  • 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 output-name template (TEAMSISO_{name}, {guid}, {machine}, {timestamp} tokens).
  • Records each ISO to disk simultaneously — raw BGRA + sidecar manifest.json
    • ffmpeg convert.cmd — so post-production gets a clean per-guest archive.
  • Embeds Teams orchestration: launch and stop Teams from the rail, hide Teams' UI windows during a show, drive in-call controls (mute, camera, share, leave, raise hand) via UIAutomation.
  • Operator presets save the current per-participant ISO assignment and custom output names, applicable on next launch automatically.
  • Live preview thumbnails per participant in the participants table, plus pop-out floating preview windows (right-click → Open preview…) 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 integration. Self-contained HTML control panel at /ui for phone-as-controller.
  • Crash diagnostics wired to a rolling daily Serilog file sink under %LOCALAPPDATA%\TeamsISO\Logs\.
  • Update check against forge.wilddragon.net's release API — manual or silent on launch (throttled to 24h).
  • Diagnostic bundle export zips logs + config + presets for bug reports.

Status

Pre-1.0. The May 2026 batch is feature-complete; v1.0 cut is gated on code-signing the MSI and a smoke pass against a real Teams meeting. See CHANGELOG.md for the [Unreleased] entry.

The May 2026 ground-up redesign — the v2 "Studio Terminal" shell — has landed on the WPF host (src/TeamsISO.App/). A WinUI 3 replatform was explored in early May 2026 and abandoned (activation blockers + redundant work given the redesign is purely XAML / view-layer); the brief lives at docs/shapes/2026-05-13-teamsiso-v2-studio-terminal.md, and the abandoned migration plan + bootstrap probe are archived under docs/archive/.

Build

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

  • src/TeamsISO.App — WPF, net8.0-windows, the shipping build

Build from the solution filter:

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

The shipped helper scripts in the repo root automate this:

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

Documentation

Keyboard shortcuts

Key Action
F1 Open help / cheat sheet
Ctrl + K Open the command palette (also Ctrl + P)
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

License

Proprietary, © Wild Dragon LLC 2026.