Live captioning

Live captioning for every broadcast, in every language

AI live captioning that keeps up with the commentary. Real-time captions in the original language, translated subtitles in 150+ more, delivered straight into your stream.

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Livecaptions in

Streaming live across 500M+ viewers

AI captioning that reads the game

Live captioning turns speech into on-screen text while it's being said. CAMB.AI does it with AI that knows the context: who's speaking, the names on the team sheet, the terms of the sport. Captions stay readable at full commentary pace.

Caption feed · NBA FinalsLive · English

Real-time captions that keep up

Captions arrive with the moment, not after it. Lines are broken where a viewer reads them best, and they clear when the speaker stops.

Timing · Documentary

where the water temperature drops to near

Live closed captioning in your broadcast format

Send closed captions inside the stream as CEA-608/708, Teletext or DVB subtitles, feed them to your Newfor inserter, or deliver WebVTT for web and app players, in pop-on or roll-up style. Push the stream to your own SRT listeners, primary and backup.

Caption output

  • CEA-608/708In the stream
  • TeletextBroadcast captions
  • DVB subtitlesBroadcast subtitles
  • NewforTo your caption inserter
  • WebVTTWeb and app players
  • SRT listener · Primary
  • SRT listener · Backup
  • HLS · Recording

Live subtitles in 150+ languages

Add translated subtitles to the same stream, one track per language, so every market follows along. Need the audio too? Turn on live dubbing on the same feed.

Subtitle tracks · Live shopping150+ languages

y aquí están los otros accesorios.

Captions that get the names right

Before the event, CAMB.AI maps the names in play: teams, players, coaches, the venue. It keeps learning as the commentary brings in new ones, so the captions spell every name the way your viewers expect. Add your sponsors and terms too.

Names in playSpurs v Knicks

10 names before tip-off+1 learned live

Built for viewers who can't hear the sound

Live captions help deaf and hard-of-hearing viewers follow the action, and everyone watching with the sound off. They support your obligations under accessibility rules such as the ADA and the European Accessibility Act.

Add a signed version or audio description for full access.

Live captions

This is the Mariana Trench, the deepest known part of the Earth's oceans.

A quality report after every broadcast

Every live stream ends with an automated QC report: uptime, whether every line was ready inside your delay, how the translation held up and whether every name came through. You see how the broadcast went without watching it back.

Quality reportExample

Spanish (Mexico) · 3 h 14 m of commentary

  • Uptime100%
  • LatencyEvery line inside the delay
  • Names273 of 273 carried
  • TranslationNo issues

Live captions wherever people watch

  • A packed football stadium at night under floodlights

    Live sport

    Every call captioned, from the first whistle to the last interview. Read the sports captioning guide.

  • A broadcast control room crew at the monitors

    News

    Breaking news captioned and subtitled for every market at once.

  • An audience in a dark hall facing a lit stage screen

    Events and conferences

    Keynotes and panels captioned live, on the stream and in the room.

  • A person watching a glowing TV in a dim room

    Streaming and OTT

    Captions and subtitle tracks on every live channel you run.

  • An empty parliament chamber seen from above

    Government and public meetings

    Council and board meetings everyone can follow.

  • Students taking notes during a lecture

    Education

    Live lectures and webinars captioned for every student.

AI live captioning vs. human captioning services

CAMB.AIHuman captioning (CART)Caption-only tools
Languages per stream150+One per captionerThe spoken language
Translated subtitlesSame streamSeparate teamSeparate tool
Names and termsMapped before the event, learned liveCaptioner prepNot always
Broadcast formatsCEA-608/708, Teletext, DVB, Newfor, WebVTTVia encoderWeb players
Dubbed audio on the same feedYesNoNo
ScaleEvery channel at onceCaptioners per channelPer channel

Live captions at the biggest events

Every Paralympic sport, subtitled live.

Real-time subtitles across all six sports of the Milano Cortina 2026 Paralympic Winter Games on Eurovision Sport, live and on demand.

03.2026Read the case study

150+ languages. Same narrator.

IMAX’s original documentaries, dubbed by CAMB.AI into over 150 languages, with the narrator’s voice and emotion kept in every one.

11.2024Read the case study

From accelerator to reseller.

From the Comcast NBCUniversal SportsTech program to Comcast’s media customers, CAMB.AI localization is now available through Comcast Technology Solutions.

02.2025Read more on Comcast NBCUniversal SportsTech

How it works

How to add live captions to a stream

  1. 01

    Connect your feed

    Send your live stream over SRT.

  2. 02

    Choose captions and languages

    Pick the source language and the subtitle languages, and add your names and terms.

  3. 03

    Pick the format

    CEA-608/708, Teletext, DVB subtitles, Newfor or WebVTT, and your SRT listeners.

  4. 04

    Go live

    Captions run with the stream until it ends. Recordings keep them for on-demand.

API

Live captioning through the API

Create a stream with the Streaming API and declare a subtitle output per language. Probe your source, start the stream, and read each output's URL from its status.

Read the docs

POST/apis/stream/probeProbe your source and list its audio tracks
POST/apis/streamCreate a stream with a subtitle output per language
GET/apis/stream/{stream_id}Read each output's state and URL

Questions about live captioning

Live captioning turns speech into on-screen text in real time, while a broadcast, stream or event is happening.

AI captioning scales to every channel and language at once and learns your names and terms. Human captioners remain an option for a single keynote; AI covers the rest.

CEA-608/708, Teletext and DVB subtitles inside the stream, Newfor to your caption inserter, and WebVTT for web and app players, in pop-on or roll-up style.

Yes. Add subtitle tracks in any of 150+ languages to the same stream.

Captions are in the language being spoken, for viewers who can't hear it; subtitles translate it for viewers who don't speak it.

Yes. For files, use the AI subtitle generator; live recordings keep their captions for on-demand.

Over SRT. Outputs go to your own SRT listeners, primary and backup, or a hosted HLS recording.

Yes. Live dubbing runs on the same feed, and the captions drive the dub.

After each broadcast, an automated quality report shows the uptime, whether every line was ready inside the delay, translation quality and every name carried.

CAMB.AI is SOC 2 compliant.

Caption your next live event

  • SOC 2 compliant
  • 150+ languages
  • CEA-608/708, Teletext, DVB, WebVTT