Intelligent Captioning Solutions
Deliver accessible content worldwide with our dynamic captioning and translation solutions.
What
We are experts in real time remote captioning for your audiences. Our captioners have decades of experience, and our captioning software is a revolutionary all-in-one solution for all viewer destinations.
We're international, working with hundreds of captioners and agencies worldwide to deliver the fastest, most accurate captions in over a hundred languages. We support accessible corporations and concerts, societies and screenings, and provide technical support to make every minute matter.
Technology
Line 21 is a state-of-the-art caption delivery software that creates, enhances, translates and delivers live captions to clients. Humans and Ai services together.
Send captions through Line 21 simply; directly using a keyboard macro or via connector.
Features
We integrate a wide range of services and we deliver captions to a variety of endpoints.
100 +
Ai Proofreader
An innovative dynamic safeguard for caption accuracy.
Caption Encoding
Fast delivery of captions. It takes ~144ms for captions to be delivered to viewers.
Destinations
Distribute captions to a wide range or destination, from YouTube, Facebook, Zoom and Team to custom RTMP, web link and overlay app.
Ai Translations
Automatically translate captions in 100 languages.
100+ Languages
We support captions, translations and proofreading in over 100 languages. Because we live in a diverse world.
We reached out to Line-21 for a live broadcast for which we needed to translate closed captions from French to English. Contact was very easy and they understood our needs quite rapidly.
The team were very present for each technical test and made sure that everything was ready.
The event went well and our client was very satisfied with the quality and accuracy of the caption. We will definitely reach out to them for another project.
Nathalie Kueno
Customer success
Caast TV
Integrations
We integrate a wide range of services and we deliver captions to a variety of endpoints.
We also provide APIs for other software to integrate with Line 21.
Community
Discord
This is our home.
Here you can chat with us, get latest updates, real-time support, etc.
Join our Discord serverDocs
This is our knowledge center.
Here you find out how to use Line 21, from general use cases down to specifics.
See Documentation