Features
Everything the Line 21 platform does for a live caption: hear the speech, check every line, carry it into other languages, and deliver it wherever your audience is.
- 01
Speech Recognition
Real-time speech-to-text from several leading engines in over 100 languages, with the best engine recommended for each language.
- 02
AI Proofreader
Checks every caption line against your event's context, fixing names, brands and jargon before your audience sees it.
- 03
Translations
Live machine translation of every caption line into many languages at once, with engines and dictionaries per language.
- 04
AI Dubbing
Speech-to-speech interpretation that carries the speaker's voice into another language's audio, for audiences who would rather listen than read.
- 05
Caption Encoding
Encode CEA-608 captions into your RTMP or SRT stream and simulcast it to YouTube, Twitch, Facebook, Vimeo and more.
- 06
HLS Streaming
Publish your video with a caption track for every language to an HLS player you can embed on your own site.
- 07
Integrations
Show captions on a browser page, an on-screen overlay, Zoom, Microsoft Teams, YouTube and other platforms.
- 08
Monitor
See your inputs, AI services and every destination at a glance while the event is live.
- 09
Zoom App
Add automated captions and machine translations to Zoom meetings and webinars with the Line 21 app for Zoom.
Need people as well?
The platform works on its own or alongside our team. These are the services our people provide.