By Huzaifa Alam, EasyYTDown · Updated September 27, 2026
Short answer: for a single lecture, copy its YouTube link, paste it into EasyYTDown and save it as MP4 (free up to 720p) or as MP3 audio (Pro). For a whole university course, first check whether the university offers downloads on its own site: MIT OpenCourseWare, for example, lets you download course materials and lecture videos directly. Either way, check the course's license first; being educational doesn't automatically make a video free to download (see is it legal to download YouTube videos?).
Why Download Lectures as Audio (MP3) Instead of Video?
Many educational YouTube videos — lectures, podcasts, interviews, language lessons — do not require you to watch the screen. A professor explaining a concept, an author discussing their book, a language tutor practising pronunciation: for all of these, audio is sufficient. Downloading as MP3 instead of MP4 gives you:
- Much smaller files: a 1-hour lecture is roughly 60–110 MB as MP3 (depending on bitrate) vs several hundred MB to about 1 GB as MP4
- Works in audio apps: many podcast and music apps can play local MP3 files
- Plays while screen is off: Your phone's screen does not need to stay on — saves battery
- Works on basic devices: old phones and MP3 players play MP3
- Room for more lectures: 10 one-hour lectures are roughly 0.6–1.1 GB as MP3, compared with about 9 GB as 720p MP4.
If the lecture involves visual demonstrations, slides with diagrams, or code you need to read, download as MP4. If it is primarily spoken content, MP3 is usually more practical. EasyYTDown's MP3 converter is a Pro feature; see MP4 vs MP3 for the trade-offs.
How to Download a YouTube Lecture — Step by Step
Step 1: Find the Lecture on YouTube
Go to YouTube and find the lecture or course you want to download. Individual lecture videos are straightforward — copy the URL from the address bar. EasyYTDown downloads one video at a time, so for a lecture series you download each lecture separately (for whole courses, see below).
Step 2: Copy the Video URL
On desktop: click the address bar, select all (Ctrl+A), copy (Ctrl+C).
On mobile: tap Share under the video → Copy Link.
Step 3: Go to EasyYTDown
Open easyytdown.com in your browser.
Step 4: Paste and Choose Format
Paste the URL. Choose your format:
- MP3 (Audio) — for lectures you can follow by listening (Pro feature)
- MP4 (Video) — for lectures with slides, diagrams, or code
For video, 480p or 720p is usually sufficient for lecture slides and talking-head videos. 1080p is rarely necessary for text-heavy content. The quality guide compares file sizes.
Step 5: Download and Organise
Click Download Now, wait for processing, then save the file. Create a folder system for your downloaded lectures (e.g., Lectures/Physics/Week1/) so you can find them easily later.
Where to Find Free University Courses on YouTube
These channels publish full courses or university-level lectures:
- MIT OpenCourseWare: full MIT courses including physics, math, computer science and engineering. OCW material is published under CC BY-NC-SA 4.0, and the OCW website has its own downloads (see below).
- Khan Academy: Math from basic arithmetic to university calculus, plus science, history, and economics
- 3Blue1Brown: mathematics explained visually
- Crash Course: Engaging introductory courses on nearly every academic subject
- Professor Leonard: full-length calculus and pre-calculus lectures
- TED and TED-Ed: short talks and lessons on science, technology and ideas
- Computerphile: computer science concepts explained by academics
- Yale Courses (Open Yale Courses): full Yale lectures on literature, philosophy, history and science. The Open Yale Courses site offers each lecture in video, audio and transcript formats, and most of it is licensed CC BY-NC-SA 3.0.
- NPTEL: National Programme on Technology Enhanced Learning — full Indian university courses across all engineering and science disciplines
Study Strategies for Offline Video Learning
Simply downloading lectures is not enough — you need to use them effectively. Here are strategies that work:
The Commute Method
Download lectures as MP3 and listen during your daily commute. A 1-hour commute each weekday adds up to about 5 hours of listening a week. This method works particularly well for subjects that are primarily auditory: economics, history, philosophy, language learning, and most humanities.
The Note-Taking Pause Technique
Watch the MP4 lecture on your laptop and pause every time a key concept is introduced. Write the concept in your own words before unpausing. This turns watching into active note-taking.
The Re-Listen Review
After a study session with a lecture, listen to the MP3 version the next morning during breakfast or your walk. Audio only is less demanding than watching, which makes it an easy way to review what you learned.
Keep a Course in Order
Name files in lecture order (01-Lecture1.mp4, 02-Lecture2.mp4, and so on) so they sort correctly, and use VLC's playlist to play them in sequence.
Downloading Lecture Slides Alongside the Video
Some educators link their slides as PDFs in the video description, and open-course sites such as MIT OpenCourseWare usually publish lecture notes and slides alongside the videos. Download the PDF slides alongside the video for the complete study package — you can refer to the slides while listening to the audio, making the MP3 approach even more effective for slide-heavy lectures.
Language Learning — A Special Case
For language learning, downloaded audio is especially valuable. Here is an effective method:
- Download the lesson video as MP3
- Listen once while reading the transcript or subtitles (use YouTube's transcript or captions where available)
- Listen again on your commute without the transcript — focus on comprehension
- Listen a third time and shadow (speak along with) the speaker
- Listen a fourth time in the background while doing other tasks
Having the MP3 offline makes this kind of repetition easy.
How to Add Downloaded Lectures to a Podcast App
Many podcast and audio apps can import local MP3 files, which gives you playback speed control, a sleep timer and bookmarks for lectures. Support varies between apps and sometimes needs a paid plan, so check your app's help pages. VLC (free, on all platforms) plays local audio with speed control.
Speeding playback up to 1.25x or 1.5x shortens a lecture noticeably; slow it down again for difficult sections.
Downloading a Whole University Course
EasyYTDown downloads one video at a time, so it isn't the right tool for a 30-lecture course. Two better options:
The university's own site. MIT OpenCourseWare lets you download a course as a zip file for offline use. Video files aren't in the zip, but you can download each one from the course's download page or from the video page itself (MIT OCW Help). Open Yale Courses also offers its lectures as video and audio on its own site.
yt-dlp. The free, open-source command-line tool can download a whole YouTube playlist in one command:
yt-dlp --extract-audio --audio-format mp3 [playlist URL]
This downloads every video in the playlist as MP3. For video downloads: yt-dlp -f "bestvideo[height<=720]+bestaudio" [playlist URL]
yt-dlp requires familiarity with the command line. For non-technical users, EasyYTDown's individual video download is more practical.
Frequently Asked Questions
Is it legal to download YouTube university lectures?
Not automatically. Lectures are copyrighted like any other video unless they carry a license that allows reuse. Some universities publish open courses under Creative Commons: MIT OpenCourseWare uses CC BY-NC-SA 4.0 (non-commercial use, with attribution), and most Open Yale Courses material uses CC BY-NC-SA 3.0. Licenses can differ between courses and videos, so check the one you want. YouTube's Terms of Service are a separate question from copyright; our legal guide explains both. Where the university offers downloads on its own site, that is the simplest option.
Can I download lectures on my phone for studying?
Yes. Open EasyYTDown in your phone's browser, paste the lecture URL, select MP4 or MP3, and download. On Android, files save to Downloads. On iPhone, files save to the Files app.
What is the best quality for downloading lecture videos?
For lectures with slides and visual content: 480p or 720p. For talking-head lectures without complex visuals: MP3 audio is significantly smaller and works perfectly. 1080p is rarely needed for educational content.
How many lectures can I download for free?
EasyYTDown's free tier allows 5 downloads per day with no sign-up. For students who need to download large course libraries, the Pro plan ($4.99/month) removes the daily limit.
Sources
- MIT OpenCourseWare Help: using a downloaded course (zip downloads; videos downloaded separately)
- MIT OpenCourseWare: Privacy and Terms of Use (CC BY-NC-SA 4.0)
- Open Yale Courses (video, audio and transcript formats) and its terms of use (CC BY-NC-SA 3.0)