Extract Audio from Video

What does extract audio from video actually do?

This tool pulls the audio track out of a video file you already have and saves it as a standalone audio file. It runs on the FFmpeg (WebAssembly) engine locally in your browser, so nothing is uploaded to a server. Open a local MP4, MOV, MKV, WebM, or AVI file, choose a track and a format, and download the audio.

It is important to be clear about what this is not: it is not a URL downloader and it does not fetch video from streaming sites. You need the video file itself, already saved on your device, before you can extract audio from video with this tool.

Original (no re-encode) vs converting to MP3, WAV, FLAC, M4A, or OGG

Original (no re-encode) uses a stream copy: it lifts the audio data straight out of the video container without decoding or re-encoding it, so nothing about the sound is altered. It is also the fastest option, since there is no encoding work to do, only repackaging. The catch is that you get the source's original codec, so the resulting file plays back exactly like the video's own audio did, no better and no worse.

Converting to MP3, WAV, FLAC, M4A, or OGG instead decodes the audio and re-encodes it into your chosen format. Reach for this when you need broader compatibility, like MP4 to MP3 for a device or app that expects MP3, when you want a lossless WAV or FLAC file for editing, or when file size matters more than an exact byte-for-byte copy of the source stream.

Selecting the right audio track

Many video files carry more than one audio track: an original-language track alongside one or more dubs, a commentary track, or separate stereo and surround mixes. This tool lists every audio track it finds, with language labels where the file provides them, so you can see what is available before you extract anything.

Pick the track that matches what you actually want to keep, then choose Original (no re-encode) or a conversion format for that track alone. The other tracks in the video are left untouched; only the one you select is extracted.

Extracting only part of a video's audio

You do not have to extract an entire soundtrack. Set an optional start and end range to pull out a single scene's audio, a musical cue, or just the portion of an interview you need, instead of exporting the whole file and trimming it afterward.

This is useful for content creators pulling a short clip for a highlight reel, or for anyone who only needs a few minutes of dialogue out of a much longer recording. If you need finer trimming after extraction, such as fades or a precise cut, hand the result to the audio trimmer.

Is this an MP4 to MP3 converter for links or downloads?

No. This is a local video-to-audio extractor, not a link-based downloader. If you are looking to turn an MP4 file you already have into an MP3, this tool does exactly that: open the file, choose MP3 as the output format, and download the result. But it will not fetch a video from a URL, a streaming service, or a video-sharing site on your behalf.

For a transcript instead of an audio file, extracted or original-quality audio can also be sent to speech to text for transcription, since that tool accepts video files' audio too when the browser can decode them.

Is it private, and does it work on mobile?

Extraction happens on your device using FFmpeg (WebAssembly); your video is never uploaded. There is no account, no sign-up, and no watermark. Converting to a compressed format uses a roughly 31 MB one-time engine download that your browser caches after the first use.

It works in mobile browsers, but video files tend to be large, and long videos or big batches can be slower or run into memory limits on a phone more readily than on a desktop. The per-file limit is 150 MB, so very long or high-resolution videos may need to be trimmed down first.

Guides for this tool