Extract the audio track from any video as MP3, WAV, or OGG, processed locally in your browser, never uploaded.
Your video is processed locally with FFmpeg running in your browser. Nothing is uploaded; the file never leaves your device. First use downloads the ~31 MB engine once. Files up to 200 MB.
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Almost every video file is a container holding at least one video stream and one audio stream. Extracting the audio means decoding or copying just that audio stream and writing it into a standalone audio file; the video frames are dropped entirely, which is why extraction is fast even for long recordings. Typical uses: turning a lecture or interview into a listenable file, saving narration from a screen recording, or grabbing a music track from footage you shot yourself.
The format choice matters. MP3 here uses variable bitrate quality 2 (roughly 190 kbps), which sounds transparent for most material and plays on literally everything. OGG uses Opus, the most efficient modern codec, smaller than MP3 at equal quality, though some older Apple software cannot play it. WAV stores uncompressed PCM: a bit-exact capture of the decoded audio with no loss whatsoever, but expect around 10 MB per minute of stereo sound.
Extraction runs locally with FFmpeg compiled to WebAssembly, so your recording never leaves your device: no uploads, no queues, no retention policies. Only extract audio from content you have the rights to use.
No. Your video file is read into browser memory and never modified; the tool writes a separate audio file and the original stays exactly as it was on your disk. Extraction only reads the audio stream and ignores the video frames.
MP3 for maximum compatibility with every player, car stereo, and editor. OGG (Opus) when you want the smallest file at the same quality and your audience uses modern players or browsers. WAV when you need uncompressed audio for editing or archiving; it is lossless but roughly 10 MB per minute.
Video files usually store audio that is already compressed, such as AAC at 128 kbps. Converting to MP3 or Opus re-encodes it once more; at these settings any further loss is inaudible in practice. WAV conversion involves no re-encoding loss at all; it stores the fully decoded PCM signal.
That happens with WAV, which is uncompressed: about 10 MB per minute of stereo audio regardless of content. It can also happen when the source video was already tiny, such as a low-bitrate clip. For everyday listening choose MP3 or OGG, which are many times smaller.
MP4, WebM, MOV, MKV, AVI, and other common containers are supported, as long as the audio codec inside is one FFmpeg can decode, which covers effectively everything in wide use. If a file contains no audio stream at all, the tool stops with a clear error instead of producing an empty file.