How to transcribe a lecture live, with Filmina and without it

If you're looking up how to transcribe a lecture live, here's the short answer: ask permission to record, get the microphone as close to the speaker as you can, use a tool that turns speech into text while you take your own notes, and review what you got when class ends. A transcript doesn't replace your notes. It fills them in with everything the professor said that isn't on the slides.

That last part is where the value is. Lecture slides almost never include the example the professor gave, the clarification they made when someone asked a question, or the "this will be on the midterm" said in passing. What isn't on the slides is what was said in class, and that's exactly what a transcript holds onto.

In this post I'll cover what to set up beforehand, how to do it with tools you already have, and how it works in Filmina with Record class, step by step, using an example from a Macroeconomics course: the inflation lecture, ninety minutes of the professor talking over a twenty-slide deck.

What a transcript gives you (and what it doesn't)

A transcript is the text of everything that was said. When you study, it's good for three things:

• Filling in your notes. You write down what matters during the lecture, and afterward you search the transcript for what you missed: a definition the professor read out, an example, a formula that flew by.
• Catching up on a lecture you walked into late or couldn't focus on. It's not the same as being there, but it's far closer than the slides alone.
• Finding what the professor assigned. Due dates, problem sets and readings that get mentioned at the very end, when everyone's already packing up.

What it doesn't give you is understanding. A ninety-minute lecture is a lot of pages of text, and reading all of it takes almost as long as sitting through the lecture again. Treat it as something to search, not something to read start to finish.

Before you record: permission, mic and Wi-Fi

Three things to sort out before class starts:

1. Ask first. Ask the professor if you can record the lecture for studying. Most say yes, but it's their class, and some would rather you didn't, especially when other students' work comes up. Also ask whether the course already records lectures: sometimes the recording exists on the course page.
2. Sit close. A phone or laptop mic picks up a voice well at a few feet and badly from the back of a big lecture hall. If you can choose, sit near the front or leave your phone on the front desk.
3. Check battery and connection. A long lecture drains a battery, and almost every transcription tool does the work in the cloud, so it needs a connection.

How to transcribe a lecture without a dedicated app

There are two routes with everyday tools, and both have limits.

Record now, transcribe later. You record with your phone's voice memo app and, once you're home, run the audio through a transcription tool, like the Transcribe feature in Word on the web or apps like Otter. It works, but there's an extra step that's easy to put off: the audio sits there "for later" and later never comes. And you don't find out whether the audio was any good until it's too late.

Live dictation. Google Docs voice typing, for example, writes down whatever the mic hears while the professor talks. It's built for your own voice, close to the mic, so with a voice several yards away it makes a lot of mistakes, stops at pauses, and needs that window open the whole time, so you can't take notes anywhere else.

Either way you end up with a long, unstructured block of text you still have to go through yourself. A transcript without a summary is just audio you have to replay, only in writing.

How it works in Filmina, step by step

In Filmina, a web app that explains your lecture slides out loud, this is called Record class. Mina listens to the lecture and turns it into text while you write your own notes next to it, and when you're done it gives you a summary. Here's how I'd use it for the inflation lecture:

1. Open Record class. It's in the sidebar on the left (on a phone, the purple button in the bottom bar). You can also start it from Add, in a course's materials, or from Take notes in class on Home. A new notebook page opens: your note on one side, the transcript column on the other.
2. Run the check. Before you start, the column shows which microphone it's using, a button to test how the audio comes through (it tells you if it's clear, too quiet or too noisy), and your connection as four little bars. When everything looks right, Start transcribing.
3. Watch the first few seconds. What the professor says shows up live, word by word with timestamps, so you can confirm it's being picked up. When Filmina can measure it, it tells you whether it's understanding well, partly, or barely at all.
4. Take your notes. After that check, the text gives way to a waveform that moves with the voice and a timer. It hasn't stopped transcribing: it's saving everything for a final pass that understands much better. Meanwhile you write your notes alongside, and you can switch to another screen without stopping the recording.
5. Stop. When you tap Stop, Mina goes back over the whole recording and that version replaces the live one. It starts a new paragraph whenever the voice changes, and whatever the professor dictates as a formula is written as a formula.

At the top of the column you switch between Transcript and Summary. The summary is organized by topic, and it also pulls out two things that would have saved me in that inflation lecture: To do, with what the professor assigned (read chapter 4 by Thursday), and Questions from the class, with what someone asked and the answer they got.

When the professor posts the slides, the paperclip at the top of the note attaches it to that file. From then on, what was said in class feeds into the explanation of the slides it relates to: if the professor gave an example about rent prices on the price index slide, Mina uses it when explaining that slide to you. All of this is covered in detail in Record class.

If you're far away or missing class: let a classmate transcribe

In a big lecture hall, from the back row, the mic won't reach. And some days you just can't make it. That's what Far back? Let a classmate transcribe is for, below the check: it creates a link for someone sitting up front.

What to know:

• Your classmate doesn't need an account. They open it in their phone's browser, add their name if they want, and tap Start transcribing.
• The link works on one phone only and expires after four hours.
• It uses your transcription hours, not theirs.
• You can see how it's going. The link card shows whether they opened it, whether they're transcribing, and when they finished. Turn off cuts it off whenever you want.

When they're done, the final pass and the summary land in your note, as if you'd recorded it yourself. If you missed a lecture and nobody recorded it either, I wrote about how to catch up on a missed lecture.

What to know before you rely on it

Said plainly, so nothing surprises you in the middle of a lecture:

• It needs a connection and an account. Transcription happens in the cloud. If the Wi-Fi drops, recording keeps going and gets transcribed when you're back online.
• The audio isn't kept. It only lives until the final pass; what stays is the text. If you want the audio, record it separately.
• It doesn't say who's speaking. It breaks paragraphs when the voice changes, but doesn't add names.
• There's a monthly cap on hours. Record class and Dictate share the same hours: the free plan includes one hour a month and Pro, ten. If you run out mid-lecture, the recording stops there and what you recorded stays. Plans are on the pricing section.

And the usual: recording doesn't replace paying attention. The best use is letting the transcript handle the writing-everything-down part, so you can pay attention and understand what you do write.

Frequently asked questions

How can I transcribe a lecture in real time?

You need a mic close to the speaker and a tool that turns speech into text, like Google Docs voice typing or a transcription app. In Filmina, Record class shows the first few seconds live so you can check it's being picked up, then transcribes the whole lecture with a better model when you finish, summary included.

Is it legal to record a college lecture?

It depends on where you are and on your school's policies, so the safest move is to ask the professor before recording. Use the recording only for studying and don't share it without their permission.

What app transcribes lectures for free?

There are free tools, like Google Docs voice typing, and apps with free plans capped by minutes. Filmina has a free plan with one hour a month of recorded lectures and dictation, with transcript and summary.

Can I transcribe a lecture if I'm sitting far from the professor?

From far away the mic picks up poorly and the transcript comes out full of errors. In Filmina you can send a link to a classmate sitting up front: they open it on their phone with no account, and the transcript lands in your note.