Live subtitles for online meetings: catching English on Zoom & Teams

The wish for live subtitles for online meetings usually shows up at one specific moment: the discussion on the other side of the screen suddenly speeds up. English over Zoom, Teams, or Google Meet is even harder to follow than in person — the audio is compressed, the mic is far away, and several voices overlap.

"Just turn on the built-in captions," you might think. And yes, every major tool now has automatic live captions. But the moment you try to actually rely on them in a working meeting, you hit a wall: they lag, they miss the jargon, and often they leave English as English instead of translating it into your language.

I spent six months building Hiroi, a solo iOS app that fuses live translation with learning, and captions are the thing people ask me about most when the meeting is remote. So before any pitch, here's what actually helps — practical ways to use subtitles on a video call, honest limits included.

Why the built-in captions aren't enough on their own

First, credit where it's due: the built-in captions in Zoom, Teams, and Google Meet get better every year. They're free and one toggle away. Always worth trying first.

But leaning on them in a real meeting exposes some weak spots:

They lag. If a caption only appears after a sentence finishes, the topic has already moved on by the time you read it.
They miss jargon and names. Company names, acronyms, and industry terms break on first encounter.
Translation is weak or absent. Most built-in captions just transcribe English as English — you can read the Teams meeting subtitles, but the work of translating in your head remains.
Every tool is different. Zoom's live captions, Teams' captions, Meet's captions — different settings, different accuracy, a new surprise each time.

In short, built-in captions are "nice to have," but they rarely get you all the way to "I can walk into this meeting relaxed."

Make your phone a second screen: live subtitles for online meetings

The practical move is to turn the phone already in your hand into a dedicated second screen — just for captions. Keep Zoom or Teams open on your computer as usual, and set the phone beside it to translate the meeting audio and stream it as real-time captions.

Why this shape works:

It works the same on any tool. Zoom, Teams, Meet, even a plain phone call — nothing about your routine changes.
It translates into your language. English speech becomes subtitles you can read in your own language.
It doesn't crowd your main screen. Shared slides and faces stay on the computer; only the captions move to the side.

What matters most here is when the caption appears. At meeting tempo you need subtitles that stream as the person is still talking, not after they finish. I wrote about that "after they finish" vs. "as they speak" gap in how a real-time translation app changes meetings.

Audio-routing basics: the app listens to your speakers

The step people trip on is audio — how the app actually hears the meeting. It's simpler than it sounds. Most live translators don't join the call as a plugin; they listen through your phone's microphone to the sound already in the room.

So the setup is:

Play the meeting through your computer's speakers (not earbuds).
Set the phone nearby.
The app hears the speaker audio and turns it into captions.

No bot joins the call, and you change nothing in Zoom's settings. A second device is simply listening to the sound in the room — so there's nothing for the other side to notice.

One honest limit: if you listen on headphones, the phone can't hear the audio. In a shared space where you can't play sound out loud, this gets awkward. The workaround is a low speaker volume with the phone close to the speaker — a small bit of fiddling, but it works.

Honest limits — and what happens after the caption

Every live caption still has weak spots:

Strong accents and fast speech produce dropped words.
When several people talk at once (crosstalk), lines blur together.
Niche jargon and made-up internal terms miss on first sight.

So captions are training wheels for listening, not magic. And the real payoff is what you do after you read one. Free translation and auto-captions understand the moment and then forget it. But the word you couldn't catch today will come back in the next online meeting — same client, same project, the vocabulary always repeats.

Turn those few missed words into today's study material, and next time they won't get past you. I wrote about that "catch it, then keep it" habit — and the wider feeling of falling behind in English meetings — in what to do when you can't follow English meetings.

How Hiroi does it

Hiroi folds those conditions — works on any tool, streams captions in your language as people speak, never records — into one flow:

In the moment: Japanese, English, and Chinese as live captions, streaming as people speak. Set your phone beside the laptop as a second caption screen.
Catch: after the meeting, save a word you missed or want to reuse with one tap.
Learn: saved words go into an FSRS deck; review arrives right before you'd forget.
Meet again: when a learned word resurfaces in real life, the app quietly tells you.

It never records audio. Transcripts and your deck stay on your device. No subscription — the first hour is free, then it's prepaid time packs (from ¥600), and time you buy never expires.

If you want live subtitles for online meetings, start with the built-in captions — and when they fall short, add your phone as a second screen beside them. If it sounds useful, take a look at hiroi.app.

May the words that slipped past on screen become words you carry easily into the next call.