Putting BabelCast captions into OBS and ProPresenter

BabelCast captions live in the browser, which means they drop into almost any production tool that accepts a web page. If you run OBS or ProPresenter, you can put translated captions on the big screen in a couple of minutes.

Adding captions in OBS

In your session, open the caption view and copy its URL. In OBS, add a new Browser source, paste the URL, and set the width and height to match your canvas. The background is transparent, so the captions sit cleanly over whatever is behind them.

• Add a Browser source and paste the caption URL.
• Size it to your scene and position it near the lower third.
• Use the interaction panel if you need to pick the language once.

Adding captions in ProPresenter

ProPresenter handles this the same way through a web block or browser input: paste the caption URL, size the region, and send it to your output screen. Because it’s just a live page, it keeps updating on its own with no slides to advance.

If a tool can show a web page, it can show BabelCast captions — no plugins, no exports, no render step.

Do a quick dry run before the room fills up: start speaking, confirm the text appears where you want it, and nudge the font size for the back row. Once it looks right, you’re live on the big screen.