Watch a video, keep the words
Open a video that came with no subtitles. They are written from the soundtrack while you watch — word by word, so pointing at one shows what it means and clicking it opens the dictionary.
How it works
- 1 Open your video Choose a file from your machine. It is played straight from disk — nothing is uploaded.
- 2 Subtitles are written from the sound The soundtrack is read in pieces and turned into timed text. The first minutes are ready in seconds, and the rest catches up while you watch.
- 3 Point at a word Every word is its own target. Rest on one and its meaning appears, at your level, in your own language.
- 4 Keep what you did not know Click a word and the dictionary opens on it — with the button that turns it into a flashcard, scheduled like every other card you own.
A player you already know
Space or a click plays and pauses, the arrows step back and forward, F is fullscreen and M is mute. Nothing new to learn.
Subtitles by the word
The recogniser times every word, so the one being spoken is underlined as you hear it — and a mouse can land on exactly the word you missed.
Meanings in context
A word is explained inside the line it came from, so "left the room" and "turn left" do not get the same answer.
Your video stays yours
The video is never uploaded. Only the audio is sent to be recognised, and the finished subtitles are stored on this device.
Questions
- Which videos can I open?
- MP4, MOV and Matroska (MKV, WebM) files, with AAC, Opus, Vorbis, MP3, FLAC or PCM audio — which is what almost every video downloaded or exported today uses. A video with several soundtracks is read from the first one a browser can decode, so an MKV carrying both Dolby and AAC works as it is. Two limits remain — MKV pictures are drawn by Chrome and Edge but not by Firefox or Safari, and a soundtrack that exists only in Dolby Digital or DTS has to be converted to AAC first, because no browser decodes those.
- Which languages can it transcribe?
- The recogniser handles the major world languages, and it is told which one to expect from your Video language in Settings → Languages. Meanings are explained in your own language, at the level you set for listening.
- Does subtitling a video cost anything?
- Yes — recognising the soundtrack uses AI units, and a full-length video uses considerably more than a short clip. It is charged once; the finished subtitles are saved on your device, so opening the same video again costs nothing.
- Is my video uploaded anywhere?
- No. The video is read from your own disk and played locally. Only the audio is extracted, in short pieces, and sent to be turned into text — the picture never leaves your machine.