Browser Source Captioning
A method of displaying live captions in streaming and presentation software by loading a web URL as an overlay source within tools like OBS Studio, ProPresenter, or vMix.
Understanding Browser Source Captioning
Browser source captioning is a modern approach to adding live captions to video productions. Instead of using NDI, RTMP caption encoding, or proprietary protocols, a simple web URL is loaded as a "browser source" (OBS), "web view" (ProPresenter), or "web browser input" (vMix). The browser renders the captions in real time, which are then composited into the video output. This approach requires no plugins, no networking configuration, and works with any software that supports web page embedding.
How Selah Translate Uses Browser Source Captioning
Selah Translate provides display URLs specifically designed for browser source integration. Create a lower-third, full-screen, or pop-out display, copy the URL, and add it as a browser source in OBS, ProPresenter, vMix, or Wirecast. Captions appear live with transparent backgrounds and customizable styling.
Related Terms
Real-Time Captioning
The process of displaying text on screen in real time as someone speaks, providing visual access to spoken content for hearing-impaired audiences or multilingual settings.
Closed Captioning
Text display of speech and sound effects that can be toggled on or off by the viewer, typically used for accessibility compliance in broadcast and live events.
Open Captioning
Captions permanently burned into or overlaid on the video/display output, visible to all viewers at all times without the option to toggle off.