How do I transcribe a lecture for free?

Upload the recording at braindumpnotes.app/transcribe, sign in with Google or Apple in one click, and pick the language the lecture was given in. You get 3 free transcriptions a day with no credit card, files up to 2 hours, and 59 languages including Arabic, French, German, Spanish and Hindi. Recordings under 30 minutes come back in full for free; for longer ones only the first 5 minutes are transcribed and shown as a preview, with the full text on the paid plan. Free use has a 10-hour lifetime cap.

Is it allowed to record a university lecture?

It depends on your institution and sometimes on the lecturer, so ask first. Many universities permit recording for personal study, some require the lecturer's consent, and recordings are often a formally approved accommodation through disability services if you have ADHD, dyslexia, a hearing condition, or a processing difference. Sharing or uploading a recording publicly is a separate question and usually is not allowed.

How long does it take to transcribe an hour-long lecture?

With automatic transcription, usually a few minutes, and you can close the tab while it runs. Doing it by hand takes most people two to three hours per hour of audio, which is why manual transcription is not a realistic revision strategy.

Are lecture transcripts actually useful for studying?

The transcript itself is raw material, not notes. Its value is that it is searchable, skimmable, and can be turned into a summary, a definitions list, and practice questions in minutes. Reading a transcript end to end is barely better than rewatching. Converting it into questions you have to answer is what makes it stick.

How to Turn a Recorded Lecture Into Study Notes (Free, in About 10 Minutes)

Recorded lectures solved one problem and created another. You no longer miss what was said, but you now own eleven hours of audio and a fortnight until the exam. Rewatching at 1.5x is still the slowest revision method ever invented: it is linear, unsearchable, and feels like studying while mostly being watching.

Turning the recording into text changes what you can do with it. Here is the whole workflow, free, in roughly the time it takes to make coffee.

Step 0: get the recording right

Ten seconds of setup saves an unusable file:

Ask first. Recording policies vary by university and sometimes by lecturer. Many institutions allow it for personal study, and if you have ADHD, a hearing condition, dyslexia or another processing difference, recording is frequently an approved accommodation through disability services. It is worth a five-minute email to find out which applies to you. Our guide on how to record lectures covers the rules and the best apps.
Put the phone where the voice is, not where you are. Front of the desk, facing the lecturer, not buried under a notebook.
One file per lecture. Do not record the whole day in one session. You want a file per topic, named while you still remember what it was.
Record video only if the board matters. Otherwise audio files are smaller and process faster.

Step 1: transcribe it

Open braindumpnotes.app/transcribe.
Sign in with Google or Apple. One click, no forms, no credit card.
Drop in the recording. Audio or video both work: m4a, mp3, wav, mp4, mov and more.
Pick the language the lecture was given in. If your course is taught in a second language, this step is the difference between a usable transcript and nonsense.
Close the tab if you want. Processing continues on the server, and the finished note is waiting when you come back.

Alongside the transcript you get a title and a short summary of the lecture, the fastest way to see what a two-hour recording covered before you decide which parts of the transcript to study closely. There is a worked example of that output, plus recording tips, on the page about how to transcribe lecture recordings.

The free tier, honestly: 3 transcriptions a day, no card, files up to 2 hours, and a 10-hour lifetime cap. For recordings over 30 minutes, only the first 5 minutes are transcribed and shown as a preview; the complete text and summary need the paid plan, so a 50-minute lecture will show you the start rather than the whole thing. Seminars, tutorials, and recorded segments under half an hour come back complete for free. If you need long files at no cost, the cap-by-cap comparison in best free audio to text tools covers the alternatives, including running Whisper locally for unlimited free transcription if you are comfortable with a terminal.

Step 2: turn the transcript into notes

This is the step people skip, and it is the only step that creates learning. A transcript is a recording you can read. Notes are a recording you have processed.

Work top down, and give it ten minutes:

Start from the summary. It gives you the shape of the lecture: three or four main claims. Those become your headings.
Harvest the hard facts. Search the transcript for the things you cannot reconstruct: definitions, dates, formulas, names, numbers. A transcript is searchable, so this is a scan, not a reread.
Mark the signposts. Lecturers telegraph the exam. Search for phrases like “important”, “the key thing”, “remember”, “for the exam”, “commonly confused”. These sentences are the highest value text in the file.
Write the questions. For each heading, write the question that heading answers. “Elasticity of demand” becomes “What makes demand elastic, and what is the formula?” You now have a revision sheet instead of a document.
Delete the rest. The transcript stays as your searchable archive. Your notes should be short enough to reread the night before.

Step 3: make the semester searchable

The compounding benefit is not per lecture, it is per module. Once every lecture is text, the question “when did she explain the difference between these two models?” takes four seconds to answer instead of an evening of scrubbing through audio.

Two habits that make that work:

Name files consistently. Course code, week number, topic. Future you is searching under time pressure.
Keep the transcripts and the notes separately. Notes are what you revise from. Transcripts are what you consult when a note is not enough.

Turning notes into recall

Reading notes feels productive and tests nothing. If you have ten minutes left in the session, convert the notes into something that asks you questions:

Flashcards from the definitions. Term on one side, the lecturer’s own phrasing on the other.
Past-paper matching. Which lecture answers which recurring exam question? Write the mapping down once and revision plans itself.
A one-page summary per module. Rewriting from memory, then checking it against the transcript, catches the gaps that rereading hides.

A note for anyone whose attention is the bottleneck

If following a live lecture and taking notes at the same time is genuinely difficult - ADHD, auditory processing, studying in a second language - the value here is bigger than convenience. Recording removes the requirement to do capture and comprehension simultaneously. You listen in the room, and process at your own pace afterwards, with the text in front of you. That is a legitimate study strategy, and disability services at most universities will formalise it.

For a full routine built around that, see how to study with ADHD using recorded lectures. Braindump exists because of the same problem in a different setting, and there is more on that angle in voice notes for ADHD and our ADHD page.

The short version

Record it properly, transcribe it in a minute, spend ten minutes converting the text into questions, and keep the transcript for search. The audio was never the study material - it was just the only format you had.

Transcribe your first lecture free, and see how much of the hour was worth keeping. And if what you actually need is the reverse workflow - catching thoughts rather than lectures - how to transcribe a voice memo to text covers that in a minute.