TeamsISO sits between Microsoft Teams' NDI broadcast and your live-production switcher. One-time setup gets you to the participants table. From https://ndi.video/tools/. TeamsISO won't start without it — the engine relies on NDI 5 for discovery and routing. If the runtime is missing, you'll see a launch error; install it then relaunch. Teams admin must enable NDI broadcast for your tenant. In Teams, Settings → Devices → "Allow NDI usage." Per-participant streams will appear as TeamsISO discovers them. Defaults to 1920×1080 at 30 fps with letterbox aspect. Adjust under Settings → Routing. Recording outputs land in %USERPROFILE%\Videos\TeamsISO\<date>\.