# Control OBS from Twitch flows

Run a Twitch chat command or a flow when you switch scenes, go live or start a recording in OBS, and let flows switch scenes, save replays and start or stop recording, with nothing to install.

## Start a flow from what OBS does

Flows can start the moment OBS changes: when you switch scenes, start or stop streaming, start or stop recording, pause a recording, or show or hide an overlay. Name a scene to run a flow only when you switch to that scene. Use these to post a chat message when you change scene, or to tidy up when you go live.

Your overlay has to be open in OBS as a Browser Source, the same one you already use for alerts or chat. You don't need anything else for these triggers.

## Let flows control OBS

To make OBS act, raise the overlay's page permissions in OBS first. Then a flow can switch scenes, set the transition, save a replay, start or stop the replay buffer, start, pause, resume or stop a recording, start or stop streaming, and start or stop the virtual camera.

A scene switch usually shows in OBS within about half a second. OBS doesn't confirm every action, so check OBS the first time you use one.

## A BRB command for mods

Give your moderators a `!brb` command that switches OBS to your BRB scene. Add a Who can trigger check set to Moderators and up, then a Switch OBS scene step. If the switch fails, the flow can say why in chat. The guide has the full steps: [Control OBS from flows](https://bloopbot.com/docs/control-obs-from-flows#brb).

## Keep the stream in your hands

A viewer must never be able to end your stream or turn your camera off. Start and stop steps for streaming, recording and the virtual camera are refused in any flow a viewer can set off, and the editor warns you on the step when that happens. Start your stream from a mods-only command, a Stream Deck button or a control panel instead.