Built for the long ones
Sessions run for hours, not minutes. The subtitle window can show several lines of history instead of one running caption, so looking down at your notes does not cost you the last sentence.
Use case
Subtitles for lectures, courses and webinars
A lecture is ninety minutes of one person speaking a language you are still learning, and there is no pause button in a live one. SubLive puts the translation next to the slides and leaves you a transcript when it ends.
Free minutes after you confirm your email. No card required.
What makes this case different
The transcript is the point
Turn saving on and the whole lecture stays as text you can search, with an AI summary of what it was about and what was concluded. Turn it off and nothing is kept at all.
Both languages at once
Show the original under the translation and the same lecture becomes a language lesson: you hear the term, you see it written, and you see what it means.
How it works here
Open the lecture or course in Chrome
A university recording, Coursera, a webinar platform, a conference stream — any tab that plays sound.
Choose “dialog” if you want history
Dialog mode keeps the last lines on screen with the speakers labelled; subtitle mode shows one line at a time, like a film.
Read, then keep what you need
Export the transcript as text or subtitles, or ask for a summary of the whole session.
What it will not do
- What you keep is for you. Course platforms and lecturers hold rights in their material, and a transcript does not transfer them — do not republish or resell what SubLive produced.
- Some platforms protect their video and never hand the audio to the browser in a usable form. SubLive does not work around protection, so on those it simply will not start.
- Heavy background music, overlapping voices and poor microphones cost accuracy — a recorded lecture hall is harder than a headset.
Questions people ask about this
- Does it work with recorded lectures as well as live ones?
- Yes. SubLive does not know or care whether the audio is live: it subtitles whatever the tab plays, at the speed it plays. Playing a recording faster works too, up to the point where the speech itself stops being clear.
- Can I get one summary of a three-hour lecture?
- Yes. Long conversations are summarised in passes and folded into one result, so length is not a reason it fails. A summary costs one minute from your balance and reading it again is free.
- Is this allowed on my university's platform?
- That depends on their rules, not on us. Many institutions are fine with a student captioning a lecture for their own use and strict about sharing the result. Check the platform's terms — and keep in mind that SubLive is a study aid, not a source you should quote as the lecturer's words.