freesabaiExtract audio from video
Take the sound out of an MP4, MOV, WebM or MKV video as MP3 or WAV, the whole of it or just a part. Listen before you save. It runs in your browser; the video is not sent anywhere.
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Result
How to use
- Choose or drop a video file. The page shows a preview and the full length.
- For just a part, type a start and an end as h:mm:ss (e.g. 1:05 or 0:01:05.5), or play the video to the right moment and press "Use this point as the start" or "as the end". Leave them empty for the whole video.
- Pick MP3 (small, plays anywhere) or WAV (uncompressed, for editing), press "Extract", listen, then "Save".
Good to know
- The browser decodes the sound. Chrome, Edge and Firefox decode MP4 (AAC) and WebM (Opus); Safari and iPhones decode fewer. Videos whose sound is AC-3 or DTS (common in MKV films), or that have no sound track, cannot be extracted, and the page says so plainly.
- If it cannot be extracted but the video plays on your computer, play it and record what the computer plays with Sound Catcher instead.
- The sound in a video is already compressed; making an MP3 of it loses a little more. Choose WAV if you will edit it. Videos with DRM, such as films from streaming apps, cannot be used. The title is not carried over to the audio file (the MP3 gets no ID3 tags).
- The browser reads the whole video and decodes all of its sound into memory before cutting. Past about an hour, or about 20 minutes on a phone, the page warns you first; files over 2 GB (1 GB on a phone) cannot be done.
- Use it only with videos you have the right to use, such as clips you filmed or were allowed to use. If your clip is on the web, download it first with Clip Downloader. For other audio files see Audio to MP3 and Audio to WAV. The MP3 encoder is lamejs (LGPL-3.0); see the credits.
Your files stay on your device
Everything runs in your browser (the encoding runs in a second thread of the browser, still on your device). The video and the audio you get are not uploaded to freesabai or anyone else, and nothing is kept in the browser: close the page and it is gone. The site counts only that this page was opened and how often a result was saved (no file names or contents, and you can turn counting off at the bottom of the site; see the privacy policy).
Report a problem or suggest an idea
A video whose sound will not come out, or an option you would like? Tell us on the feedback page, no sign-up (please do not attach files with personal data).
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Questions and answers
How do I convert MP4 to MP3?
Choose the MP4 video, pick MP3, set a start and end if you like, and press Extract audio. Listen, then save. Everything happens in your browser; the video is not uploaded.
Why does it say there is no sound, or it cannot decode it?
The video may have no audio track, or its sound is AC-3 or DTS, which browsers cannot decode. Try Chrome or Firefox on a computer, or play the video and record it with Sound Catcher.
Can I extract only part of the audio?
Yes. Type a start and an end as h:mm:ss, or play the video to the right moment and press Use this point as the start or the end.
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