Streaming with OBS and a virtual audio cable

If you already stream your services with OBS, you can run Glossa alongside it. OBS keeps sending your main broadcast to YouTube, Facebook, or wherever you stream, and a copy of the audio goes to Glossa through a virtual audio cable. Nothing about your existing stream changes.

How it works
Glossa only needs the audio, not the video. A virtual audio cable acts like an invisible patch cable on your computer: the audio OBS is handling gets sent into the cable, and Glossa listens to the other end of that cable. Your viewers and your translation both get the same clean sound.

Setting it up

1. Install a virtual audio cable for your operating system. On Mac, use BlackHole. On Windows, use VB-Audio Cable. Each has its own article in this category with full steps.
2. Route the audio you want to translate into that virtual cable. The how-to differs slightly by operating system, so follow the matching article.
3. Open your service in Glossa using Google Chrome on the same computer.
4. In the audio input dropdown, select your virtual cable (for example BlackHole 2ch on Mac or CABLE Output on Windows).
5. Check your levels, then start your stream. OBS continues broadcasting exactly as before.

A tip for a single computer

Running OBS and Glossa on the same machine works well, but if your computer is older or your service is long, watch that it isn't straining. If you have a spare laptop, running Glossa on its own computer with a direct line from the soundboard is even more reliable.

Prefer not to use a virtual cable?
If routing audio on the computer feels fiddly, OBS can instead send a copy of your stream to Glossa over RTMP. It's a little simpler to wire up but adds some delay. See "Using an RTMP input."