How do I extract audio from an MP4 video?
To extract audio from a video, open FixDoks's MP4 to MP3 tool, select the video file, pick an MP3 bitrate such as 192kbps, then click Convert to MP3. Your video is uploaded over an encrypted connection to our server, which reads the audio track and encodes it as MP3, and the result plays in every music app, car stereo and phone.
MP4 to MP3 at a glance
| Input | MP4, MOV, WebM, MKV, AVI |
|---|---|
| Output | MP3, 96-320 kbps |
| Processing | On our server over HTTPS; files are deleted right after conversion |
| Max file size | 50 MB per file |
| Price | Free to use, no watermark |
| Download | First download free, then ₹49 for 2 months of unlimited downloads (US$3 outside India) |
| Files at once | 1 free, up to 30 with a plan |
| Works on | Chrome, Edge, Safari and Firefox on Windows, Mac, Android and iPhone |
How to use MP4 to MP3
- Click Select video and choose an MP4, MOV, WebM, MKV or AVI file.
- Pick an MP3 quality. 192 kbps is a good default; choose 96 kbps for speech only.
- Click Convert to MP3, listen to the preview and download.
Get just the audio
A video file is really two streams packed together: the pictures and the sound. This tool reads your video, takes out the audio track and encodes it as an MP3, the most widely supported audio format in the world. The result plays in every music app, car stereo, smart speaker and phone.
Common uses
- Save a recorded lecture, sermon or talk to listen to on a walk or commute.
- Keep the audio of a WhatsApp or phone video, such as a child singing or a voice message recorded as video.
- Turn an interview or meeting recording into audio for transcription.
- Get a clean music or background track from your own video project.
Which bitrate should I choose?
| Bitrate | Best for | Size per minute |
|---|---|---|
| 96 kbps | Speech, lectures, meetings | about 0.7 MB |
| 128 kbps | Podcasts, casual music | about 0.9 MB |
| 192 kbps | Music, general use | about 1.4 MB |
| 320 kbps | Highest MP3 quality | about 2.3 MB |
A higher bitrate cannot add quality that is not in the video. Phone videos usually carry AAC audio at 128 to 256 kbps, so 192 kbps MP3 captures everything. Tick Mono for speech recordings to halve the size with no audible difference.
What if I need a different audio format?
Use the Audio Converter to save as WAV, M4A, AAC, OGG, Opus or FLAC. WAV is useful for editing software, and M4A is the native format on Apple devices.
Only need part of the audio?
Convert the whole video first, then open the MP3 in Audio Cutter to keep the section you want, with optional fade in and fade out. That is also an easy way to make a ringtone.
Please respect copyright
Extract audio only from videos you made or have permission to use. Downloading or converting copyrighted music and films you do not own may break the law in your country and the terms of the site you got them from.
Fast and private
Extraction runs on our server. Your video is uploaded over an encrypted connection, the audio is extracted, and the file is deleted automatically within about 30 minutes. The MP3 is usually ready within a few seconds of the upload finishing.
Why is my MP3 a bit longer or shorter?
MP3 encoders add a few milliseconds of padding at the start and end of a file, so the reported length can differ by a fraction of a second from the video. The audio itself is complete and in sync with what you heard in the video.