Local video
Learn languages from local video: play on your device, study line by line
Use the lectures, series episodes, course recordings, and podcast videos you already have. LangScribe opens files in the browser: bilingual subtitles, sentence replay, A-B loops, and word lookup, without uploading the film for playback.
You bring the file. LangScribe does not sell a show catalog, and it does not replace a browser extension inside a streaming site’s player.
No sign-up to start. Videos stay on your device. Import subtitles or generate them with AI.
Why a file you can open beats scrolling a stream
When the file is yours to open locally, you pick the exact talk or episode, and you can return to the same hard sentence tomorrow. Passive watching builds familiarity. Local video plus study controls builds deliberate listening.
- Loop the stretch you missed
- Confirm meaning in bilingual lines
- Save the word in its sentence
Three steps, no desktop install
Add a video, get subtitles, then study line by line. Playback happens in the browser. Nothing is uploaded for ordinary play.
- Open a file from your computer or paste a direct video link.
- Import SRT, VTT, or ASS if you already have captions. That path is free. If there are no usable subtitles, generate AI subtitles from the audio. AI uses credits and needs sign-in.
- Watch with bilingual subtitles, jump previous and next line, replay, set A-B on a hard segment, click words, and save them to your vocabulary list.
A player built for listening practice
These are the same learning ideas people like in streaming extensions, applied to files on your machine, not to a Netflix tab.
- A-B and single-line loop. Mark A, then B, and replay the stretch, or loop only the current subtitle line.
- Bilingual subtitles. Original and translation together, so you spend less time switching apps mid-sentence.
- Click lookup and vocabulary. Tap a word in context, save it, and return to that line from your vocabulary list.
Who it is for
Self-learners with local course videos, downloads, or screen recordings, and anyone who wants intensive listening rather than only passive watching.
- You care that the video file stays on the device.
- You want loops and bilingual lines on a file you already have.
Free tools and AI, with a clear edge
You can start serious study on free tools alone. Turn on AI only when captions are missing or you want the paid translation path. About 10 minutes of audio is about 20 credits of AI subtitles.
| Free | Uses credits, and needs sign-in |
|---|---|
| Play local video and direct links | AI subtitles: speech-to-text with timestamps |
| Import SRT, VTT, or ASS | AI translation |
| Free translation | Optional AI word examples |
| Line replay, loops, and word lookup | Not required for everyday study |
Try free with imported subtitles. Generate AI subtitles when you need captions.
Try free with imported subtitlesWho should look elsewhere
- If your main habit is studying inside Netflix or another streaming web player, a browser extension built for that surface is a better match. LangScribe does not replace that workflow.
- If you need a curated show library, look at products that sell a catalog. LangScribe assumes you bring the file.
- Local files here. Streaming plugins there. That split keeps the promise honest.
FAQ
Do I need to register?
No. Basic playback and subtitle study work without an account. Google sign-in is for AI features and for syncing library and subtitle metadata across devices.
Which formats are supported?
Common browser-playable video and audio, such as MP4, WebM, and MP3. Subtitles: SRT, VTT, and ASS import; SRT export. Direct links and HLS work where the browser can play them.
What if I have no subtitles?
Import captions when you have them, or generate AI subtitles from the audio after sign-in.
Is this a Language Reactor alternative?
Only for the local-file scenario: bilingual study controls on videos you open yourself. It is not an alternative for Netflix-in-the-browser study.
Are videos uploaded?
No for playback. AI transcription sends extracted audio chunks only. See the privacy-first page and the Privacy Policy for the boundary.
Press play on the next language, with a file you already have
No account wall to start. Open a local video, add subtitles, and turn hard lines into something you can finish.
Privacy-first: video stays on device