How to extract audio from a video
- 1.
Choose a video
Drop an MP4, MOV, WebM or MKV file onto the area above or click to select it.
- 2.
Pick format and quality
MP3 at 192 kb/s is the default. You can choose M4A or lossless WAV, change the sample rate or save as mono.
- 3.
Click Convert
Watch the progress - you can cancel at any time.
- 4.
Listen and download
Check the result in the player and download the audio file.
Which MP3 bitrate should I choose?
- 64 kb/s (~0.5 MB per minute) - speech, podcasts, lectures.
- 128 kb/s (~1 MB/min) - good quality for general use.
- 192 kb/s (~1.4 MB/min) - music, a good compromise.
- 320 kb/s (~2.4 MB/min) - the maximum MP3 quality.
The result cannot sound better than the original audio in the video.
How does it work without uploading?
The tool reads the video's audio track with WebCodecs, ignores the picture and encodes the sound to the chosen format. MP3 is encoded by a small WebAssembly module loaded only when needed. Files never leave your device.
MP3, M4A or WAV?
| Format | Size per minute | Best for |
|---|---|---|
| MP3 | 0.5-2.4 MB | Plays on everything: car stereos, old players, every app |
| M4A (AAC) | 0.5-2.4 MB | Apple devices; slightly better sound than MP3 at the same bitrate |
| WAV | about 10 MB (stereo) | Editing in Audacity or a DAW without another lossy step |
M4A only shows up if your browser has an AAC encoder (Chrome, Edge and Safari usually do). MP3 and WAV always work.
Which videos work?
Phone videos (MP4 and MOV with AAC audio) work in every modern browser. WebM screen recordings with Opus audio work in Chrome, Edge and Firefox. MKV files are fine as long as the audio is AAC or Opus - AC-3 and DTS soundtracks from films are usually not decodable in a browser. If the browser cannot decode a file's audio, you will see an error message - try another browser (for example Chrome instead of Firefox) or convert the video to a standard MP4 first.
Example: a one-hour lecture recorded in Full HD is typically 1.5-4 GB. Its audio as 64 kb/s mono MP3 is 64 × 3600 ÷ 8 = 28,800 KB, about 29 MB - small enough to email or feed into a transcription tool.
Common mistakes
- Choosing 320 kb/s for a phone video - most phone clips carry 96-128 kb/s AAC audio, so a higher bitrate only makes the file bigger.
- Converting the same file twice - every lossy step adds artefacts. If you need both MP3 and WAV, convert each from the original video.
- Using mono for music - it halves the size but removes the stereo image. Keep mono for speech.
Frequently asked questions
Is it free?
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Is my video uploaded?
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Can I extract only a part of the audio?
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What if my video has no sound?
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Can I convert a YouTube video?
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Does it work on a phone?
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Updated: