How to Convert MP4 to MP3 (Save the Sound of a Video)
Save the sound of an MP4, MOV or other video as an MP3, M4A or WAV file — music, lectures, interviews or voice notes. Free, in your browser, nothing uploaded.
3 min read ·
To convert MP4 to MP3, open Extract Audio, add the video, choose MP3 and a Quality (192 kbit/s for music, 128 kbit/s for speech), and press Extract MP3. Listen to the result and download it. It works with MOV, WebM, MKV, AVI and other videos too, and you can choose M4A or WAV instead.
Extract the sound step by step
- Open Extract Audio.
- Add the video — click, drop or paste it — or paste a direct link to a video file.
- Choose Save as:
- MP3 — plays everywhere.
- M4A (AAC) — slightly smaller at the same quality; native on Apple devices.
- WAV — uncompressed, for editing in an audio app.
- For MP3 and M4A, choose the Quality: 128, 192, 256 or 320 kbit/s.
- Press Extract, play the result, and download it.
Which quality should I pick?
| What's in the video | Recommended |
|---|---|
| Speech: lectures, meetings, interviews | MP3 at 128 kbit/s |
| Music | MP3 at 192–256 kbit/s |
| Material you'll edit further | WAV |
A higher bitrate can't add quality that the video's own sound doesn't have — most phone and web videos carry sound at 128–256 kbit/s, so 192 kbit/s keeps practically everything.
Things people extract
- Lectures and webinars to listen to while commuting.
- Interviews to transcribe or quote.
- A song from a music video or concert clip you filmed.
- Voice notes sent as videos.
- Podcasts recorded on video for publishing as audio.
- Sound effects and ambience for your own projects.
Keep a lecture or meeting as audio
Hour-long recordings are much more convenient as audio: a one-hour MP3 at 128 kbit/s is about 55 MB, compared with several hundred megabytes for the video. Extract it, then listen at 1.5× in any podcast or music app — or send the MP3 to a transcription service, which usually prefers audio files to video.
After extracting
- Cut out just a part — a single song from a concert recording, a quote from an interview — with the Audio Splitter.
- Clean up hiss or hum with the Audio Noise Reducer.
- Convert to other formats such as FLAC, OGG or Opus with the Audio Converter.
The opposite: a video without sound
To keep the picture and remove the sound instead, use Mute Video.
Videos from the internet
Extract Audio works on video files you have on your device or behind a direct link to a video file. It can't download from streaming sites like YouTube — and many of them don't allow it in their terms. Use it for videos you've made, been given, or have the right to use.
Large files
Everything runs in your browser with ffmpeg (WebAssembly), which is fast for audio — a one-hour lecture takes a minute or two on a laptop. Very large video files (several GB) may exceed a browser's memory, especially on phones; cut them into parts first with the Video Splitter if needed.
Privacy
The video isn't uploaded: the sound is extracted and converted on your device. No watermark, no sign-up.
Frequently asked questions
Does it work on iPhone?
Yes, in Safari. Choose the video from your Photo Library; the MP3 is saved to Files › Downloads.
What if the video has no sound?
The tool tells you — there's nothing to extract.
Can I extract audio from many videos at once?
One at a time here. For several files, the Audio Converter accepts videos too and converts them in a batch.