Captio AI
🦻 Accessibility + 💻 Productivity App

Bengali live captions and productivity tool for tv & media

For deaf and hard of hearing people.

Download for free

Download on theApp Store
Captio AI app showing live captions

Download for free

Download on theApp Store
Use Cases

Every situation covered

Designed for the real moments that matter — not just quiet controlled environments.

📺Live TV — news, sport, events

BTV and Bengali news channels run live bulletins that pre-generated captions cannot keep up with. Point Captio AI at your TV and read the Bengali as it is spoken, not several seconds behind the anchor.

🎬Streaming content

Hoichoi, Chorki, and other platforms vary in subtitle quality and availability. Captio AI works as a consistent fallback for any Bengali drama or film that ships with wrong, delayed, or missing captions.

📱YouTube and social media

YouTube auto-captions for Bengali are often inaccurate and most social video has none. Point Captio AI at your phone and read accurate Bengali captions for any clip.

🌍Foreign-language content

A foreign film, a foreign documentary, a non-Bengali channel. Live Translator captions and translates in real time so anything becomes watchable in Bengali as it plays.

🎭Cinema

Not every cinema showing is captioned. Hold Captio AI near the audio and read real-time Bengali captions of the dialogue discreetly from your seat.

🎧Podcasts and audio content

Most Bengali podcasts have no transcript. Hold Captio AI near the audio or upload a recording, and read the whole episode in writing.

Performance

Most accurate and fastest models

Bengali
93.7%

word accuracy

independent benchmark, 2025

< 200ms
you speak
captions

real-time captions

first word appears as you speak

Download for free

Download on theApp Store
Captio AI in everyday use
Why Captio AI

Built for the content that subtitles fail

Captions any content in real time

Point the phone toward any speaker — TV, laptop, tablet, cinema screen. Captio AI captions whatever is playing, regardless of whether that platform provides subtitles.

Faster than built-in subtitles for live content

Pre-generated subtitles lag behind live TV by several seconds. Captio AI captions in real time — so you read what is being said as it is being said.

Works on any screen or device

No integration required. Point the phone toward the audio source — the same approach works for a large TV, a laptop screen, a cinema, or a phone held at arm's length.

Any language, translated in real time

For foreign-language content, switch to Live Translator. It translates as content plays — so a French film, a German documentary, or a Japanese series all become watchable.

No subtitle file needed

Captio AI captions from the audio directly. No subtitle file, no platform support, no creator requirement. If audio plays, Captio AI can caption it.

More accurate than auto-generated captions

The industry average for AI-generated subtitles is a 10–15% word error rate — roughly 1 in 10 words wrong (3Play Media). Captio AI is built for accuracy in real-world audio conditions.

Bengali

Why Bengali is hard to understand

Aspirated pairs

  • Twelve stops that look like six on screen
  • Bengali distinguishes aspirated and unaspirated stops across six positions — p/ph, b/bh, t/th, d/dh, k/kh, g/gh. The aspiration is a puff of air with no lip cue, so on a TV serial or a fast news read all twelve sounds look like six on a speaker's face.

Nasalized vowels

  • Nasal contrasts made at the soft palate
  • Bengali, especially the eastern variety spoken in Bangladesh, makes heavy use of nasalized vowels. Nasalization happens at the soft palate with almost no visible difference at the lips, so a deaf viewer watching a drama sees no signal for a contrast that changes the word.

East–West divide on screen

  • Dhaka Bengali and Kolkata Bengali both stream
  • Bangladeshi and West Bengal content differ in vowel quality, intonation, and several phonemes. A deaf viewer calibrated to one variety finds the same words look different when a Dhaka serial or a Kolkata film comes on, and the face on a phone screen is too small to lip-read anyway.

Bengali–English code-switching

  • English dropped into Bengali content
  • Urban Bengali TV, film, and YouTube mix English terms into Bengali constantly. A deaf viewer must switch to English phonology on exactly the words that carry the point, then back to Bengali, with no visual warning and no lip to read when the shot cuts away.

Fast dramatic and news speech

  • Serials and anchors move at pace
  • Bengali serials deliver emotional dialogue quickly, and news anchors and talk-show panels talk over each other at speed. In this fast, overlapping speech the careful enunciation that aids lip-reading disappears entirely.

Download for free

Download on theApp Store
The Challenge

Bengali screens have almost no structured captioning for deaf viewers

Bangladesh carries one of South Asia's heaviest hearing loss burdens: research estimates that around 9.6% of the population — some 13.7 million people — are deaf or hard of hearing with a loss of 40 dB or more, and a further third have some degree of hearing loss. Across the border in West Bengal, a large Bengali-speaking population shares the same media, and the same barrier.

There is no established framework requiring captioning of Bengali television, and dedicated subtitling for deaf and hard of hearing viewers is rare on both sides of the border. Live news goes uncaptioned, streaming subtitle quality is inconsistent, YouTube auto-captions for Bengali are unreliable, and the constant Bengali–English mixing of urban content is exactly where automated subtitles struggle most. For a deaf Bengali viewer, most of what plays on screen is inaccessible from the audio.

Captio AI does not depend on the broadcaster or the platform. Point the phone at any screen — a live BTV bulletin, a Hoichoi serial, a Kolkata film — and read Bengali captions in real time, in the variety actually being spoken, whether or not that content was ever captioned.

Download for free

Download on theApp Store
Privacy

What you hear stays with you.

Gone the moment it ends

Captio AI processes your audio in real time and discards it immediately. Nothing is recorded. Nothing is kept.

Not a product

Your conversations are not something Captio AI sells, shares, or monetizes — to anyone, for any reason.

Not used to train anything

What you say in a doctor's appointment or a job interview never ends up in a training dataset. Not ours. Not anyone else's.

100% PRIVATE

Private by default

Download on theApp Store
Reviews

People love Captio AI

"Bengali live news has no captions at all here. The anchor reads fast and the aspirated sounds are invisible. Captio AI captions it in real time from the audio. I finally follow the news as it happens."

Tanvir R. 🇧🇩
tanvir.r***@gmail.com
Hard of hearing, Dhaka — live news viewer

"Kolkata serials mix Bengali and English and rarely have good captions. Captio AI captions the actual dialogue from the audio, in real time. I follow the whole story now instead of guessing."

Sohini D. 🇮🇳
sohini.d***@gmail.com
Deaf, Kolkata — streaming viewer

"Bengali YouTube auto-captions are unreliable and Dhaka and Kolkata Bengali sound different anyway. Captio AI captions any clip accurately. It covers the content the platforms never do."

Imran H. 🇧🇩
imran.h***@gmail.com
Hard of hearing, Chittagong — YouTube viewer

"Bengali films almost never have captioned showings. I hold Captio AI on my knee and read the dialogue from my seat. I stopped waiting for a subtitled home release just to watch a film."

Ananya B. 🇮🇳
ananya.b***@gmail.com
Deaf, Kolkata — cinema-goer

"Bengali live news has no captions at all here. The anchor reads fast and the aspirated sounds are invisible. Captio AI captions it in real time from the audio. I finally follow the news as it happens."

Tanvir R. 🇧🇩
tanvir.r***@gmail.com
Hard of hearing, Dhaka — live news viewer

"Kolkata serials mix Bengali and English and rarely have good captions. Captio AI captions the actual dialogue from the audio, in real time. I follow the whole story now instead of guessing."

Sohini D. 🇮🇳
sohini.d***@gmail.com
Deaf, Kolkata — streaming viewer

"Bengali YouTube auto-captions are unreliable and Dhaka and Kolkata Bengali sound different anyway. Captio AI captions any clip accurately. It covers the content the platforms never do."

Imran H. 🇧🇩
imran.h***@gmail.com
Hard of hearing, Chittagong — YouTube viewer

"Bengali films almost never have captioned showings. I hold Captio AI on my knee and read the dialogue from my seat. I stopped waiting for a subtitled home release just to watch a film."

Ananya B. 🇮🇳
ananya.b***@gmail.com
Deaf, Kolkata — cinema-goer

Download for free

Download on theApp Store
FAQ

Frequently asked questions

Watch anything in Bengali.

Captio AI is free to start

Download for free

Download on theApp Store