How to convert video to audio
- Drop a video file — MP4, WebM or MOV — into the upload box.
- The soundtrack is extracted on your device; the page shows the resulting duration, sample rate and channels.
- Preview the extracted audio in the player.
- Download it as a 320 kbps MP3 or an uncompressed WAV.
This video to audio converter covers the everyday MP4 to MP3 job without the usual sketchy upload sites: your browser already knows how to decode the video, so the tool simply asks it for the audio track and hands you the result. That keeps screen recordings, lecture captures, interviews and unreleased footage private — the video never leaves the tab — and makes extraction fast even on large files.
Once you have the soundtrack, the rest of SoundForge picks up the chain: trim the highlight with the Audio Trimmer, transcribe speech with Speech to Text, or re-encode to a specific bitrate with the Audio Converter.
FAQ
How do I convert MP4 to MP3?
Drop the MP4 into the upload box. The audio track is decoded out of the video right away, appears in a preview player, and downloads as a 320 kbps MP3 or a WAV file — three clicks from video to audio.
Which video formats are supported?
Whatever your browser can decode. MP4 with H.264/AAC and WebM work essentially everywhere; MOV and MKV depend on the codecs inside them and on your browser. If a file fails, re-exporting it as a standard MP4 almost always fixes it.
Is there a file size limit for video to audio conversion?
There is no enforced limit, but the whole video has to fit in your device's memory while the audio is decoded, so multi-gigabyte files can be slow or fail on phones. Clips, lectures and song-length videos are no problem.
Is my video uploaded to a server?
No — that is the point of this tool. The soundtrack is extracted by your own browser on your own device, which makes it safe for private recordings, lectures and unreleased footage. It is free, with no account and no watermark.