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Help/Subtitles and languages

Subtitles on a channel that has none, written on your TV as it plays

mtivi listens to the audio and writes the subtitles itself, on live TV as well as films, on the device, with nothing sent anywhere.

2 min readUpdated 20 Sep 2026

Almost no live channel carries subtitles. Most films from a playlist carry them in one language, if any. mtivi solves that by writing them itself, from the sound, on your own device.

This is the thing mtivi does that other players on a TV box do not. It runs offline once the language is downloaded, it costs nothing per use, and nothing about what you watch leaves the room.

Turn it on

  1. Start a channel or a film, then open the subtitle picker

    From the player controls.

  2. Choose the generated option and the spoken language

    More than 28 spoken languages are supported.

  3. Let it fetch that language once

    The app shows the size first and checks you have room. After that the language stays on the device and works with no internet at all.

Accuracy, and what it costs your box

Level Use it when
Balanced A TV stick or an older box, or live TV where keeping up matters more than perfection
High A capable box, and films where you want the best reading

Set it under Settings, then Playback.

Then translate what it wrote

Generated subtitles feed straight into translation, so a channel in a language you do not speak becomes a channel with subtitles in the language you do, live, on the device. See Translate subtitles into your own language.

It is transcription, not magic. Studio speech comes out well. A roaring stadium, heavy accents and three people talking at once come out worse. Live is harder than a film because there is no chance to look ahead.

Plans

Included on the trial, Pro, Lifetime and Max, for live channels and films alike. Not on Free.

One trade-off. On devices that cannot process audio and pass it through at the same time, turning on live captions ends Dolby passthrough for that session.

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