GT Captions for Windows

Live AI subtitles over any slide, video or document

GT Captions puts transparent live subtitles on top of whatever is on your main screen, full screen. Add your sponsor's logo, take audio from several sources including the computer's own sound, and run it all from the presentation PC, with no extra caption hardware.

  • Transparent overlay
  • Sponsor logo on screen
  • Several audio inputs
Illustration

What makes it different

Subtitles that sit on top of everything

AI captions usually live in a browser window, on attendees' phones or inside a video production system. GT Captions draws them straight onto the main screen, over whatever your audience is already looking at.

A truly transparent overlay

Subtitles float over PowerPoint, videos, PDFs, web pages or any other application running full screen. No colored box covering your slides, and no second layout to design.

Your sponsor's logo, on every caption

Place a sponsor or event logo on the subtitle overlay. Every sentence on screen also carries your partner's brand: a new, highly visible sponsorship asset for your event.

Several audio inputs

Use more than one audio source in the same session, such as the mixer feed, a lectern microphone and a backup microphone, without adding an external mixer.

The computer's own sound as a source

Subtitle a video playing on the presentation PC, or a remote speaker coming through a meeting app on it, straight from the computer's sound. No virtual audio cable to install.

No extra hardware

One Windows PC instead of a caption hardware chain

Putting live subtitles over slides has usually meant extra equipment and a specialist to run it. GT Captions runs on the computer that already drives the screen.

The usual setup

  1. Presentation PC
  2. Video switcher or keyer
  3. Caption computer
  4. Screen

Extra equipment to rent, ship, cable and operate, just for subtitles.

With GT Captions

  1. Presentation PC with GT Captions
  2. Screen

Nothing extra to rent or ship. After one training session your own team can run it, and AV partners can offer it with the kit they already own.

Who it's for

Simple enough for your team. Powerful enough for your AV partner.

Event organizers and in-house teams

Run professional-looking multilingual subtitles yourselves. We train your team and rehearse with your content before the event.

AV and production companies

Offer live multilingual subtitles as a new service, using the computers and screens you already own. Talk to us about working together.

Venues, universities and corporate offices

A permanent setup for auditoriums, lecture halls and town-hall rooms, so any presentation can be subtitled.

  1. 01

    Install on the presentation PC

    The Windows computer that drives your main screen, projector or LED wall.

  2. 02

    Connect your audio

    The mixer feed through a USB audio interface, microphones, the computer's own sound, or several of them.

  3. 03

    Set languages and your logo

    Choose the subtitle language, add your sponsor's logo and set where the subtitles sit on screen.

  4. 04

    Present as usual

    Subtitles float over slides, videos and documents, full screen, for the whole room to read.

Download and training

Download GT Captions and get your team trained

GT Captions for Windows

  • Windows 10 or 11, 64-bit
  • Internet connection: captions are generated online
  • Audio from a USB audio interface, a microphone or the computer's own sound
  • A Green Terp account: we set it up for you
Download for Windows (.exe)

We train your team

  • Installation and audio routing on your own equipment
  • Overlay, logo and language settings
  • A rehearsal with your slides, videos and speakers
  • Your names and terms prepared in advance
Book a training session

Everyone in the room will read these subtitles

Big-screen subtitles are machine-generated and labeled as AI, like all Green Terp AI output. For negotiations, press Q&A and other high-stakes sessions, pair them with professional interpreters. Not sure? Check whether AI is right for your session.

FAQ

GT Captions questions, answered

What is GT Captions?

GT Captions is a Windows application from Green Terp that shows live AI captions and translated subtitles on a transparent layer over whatever is on a full-screen display: PowerPoint slides, videos, PDFs, web pages or any other application. It can carry a sponsor's logo, takes audio from several sources including the computer's own sound, and is part of Green Terp AI.

Which applications can it show subtitles over?

Any application on the screen it runs on, including PowerPoint, video players, PDF viewers and web browsers, because the subtitles sit on their own transparent layer on top.

Do we need a video switcher, keyer or caption computer?

No. GT Captions runs on the computer that drives the screen, so subtitles need no extra switcher, keyer or separate caption computer. You only need an audio feed into that computer.

Can we show a sponsor's logo with the subtitles?

Yes. You can place a sponsor or event logo on the subtitle overlay, so it stays on screen with every caption.

Can it take audio from more than one source?

Yes. GT Captions can use several audio inputs in one session, such as the mixer feed, a lectern microphone and a backup microphone.

Can it subtitle a video playing on the computer?

Yes. GT Captions can take the computer's own sound as an input, so it can subtitle a video playing on the presentation PC, or a remote speaker coming through a meeting app on it, without a virtual audio cable.

PowerPoint already has live subtitles. Why use GT Captions?

PowerPoint's built-in subtitles work inside a PowerPoint slide show. GT Captions works over any application, including videos and documents, takes audio from several sources including the computer's own sound, carries your sponsor's logo, and runs on Green Terp AI with your prepared names and terms.

Is GT Captions available for Mac?

Not at the moment. GT Captions runs on Windows 10 and 11. If your presentations run from a Mac, talk to us about the options for your event.

Are the subtitles labeled as AI?

Yes. An "AI captions" label is shown on the overlay, as on every Green Terp AI caption view, so the audience knows the text is machine-generated.

Which languages are available?

The same 40+ languages as Green Terp AI, as captions in the speaker's language or as translated subtitles. Quality varies by language pair, so we check your languages before the event.

Do we need an AV company to run it?

No. After a training session, your own team can run GT Captions. AV and production companies use it too: it lets them offer multilingual subtitles without new hardware.

How is GT Captions priced?

GT Captions runs on Green Terp AI, which is priced per event by hours and languages, with no subscription required. Contact us for a quote that covers your event and your team's training.

GT Captions

Put multilingual subtitles on your big screen

Download GT Captions, book a training session, or ask us to run it with your team at your next event.