# Video to MP3 Converter

> Extract the audio track from a video and save it as MP3, WAV, AAC or OGG.

To extract audio from a video, add the file and choose an output format. The video stream is discarded and the audio is re-encoded to MP3, WAV, AAC or OGG at your chosen bitrate. Everything runs locally, so the video is never uploaded.

**URL:** https://convertto.tech/t/video-to-audio
**Category:** Audio & Video Tools (https://convertto.tech/c/media-tools)
**Privacy:** Runs entirely in the browser; no upload
**Cost:** Free, no sign-up
**Last updated:** 2026-08-01

## Key facts

- **Engine:** FFmpeg compiled to WebAssembly
- **First run:** Downloads ~30 MB of FFmpeg core, then cached
- **Upload:** None — the file never leaves your device
- **Privacy:** Runs entirely in your browser — nothing is uploaded
- **Cost:** Free, unlimited, no sign-up

## How to use

1. Select your video file — the file stays on your device and is never uploaded.
2. Choose the audio format.
3. Choose the bitrate.
4. Press Run, then download the result when it is ready.

## FAQ

### What bitrate should I use?

192 kbps is transparent for most listeners on most material. 320 kbps is the practical maximum for MP3, and 128 kbps is fine for speech and podcasts where file size matters more.

### Why is the first run slow?

The FFmpeg WebAssembly core is about 30 MB and downloads once per session. After that it stays in the browser cache, and subsequent conversions start immediately.

### Is my video uploaded anywhere?

No. FFmpeg runs inside your browser as WebAssembly, so the file is read from disk into memory and never sent to a server. That is also why there is no file size limit beyond your available RAM.

### Why is it slower than desktop FFmpeg?

WebAssembly runs single-threaded here and cannot use your GPU, so encoding is typically several times slower than a native build. For a short clip that is fine; for a feature-length film, use desktop FFmpeg.

## Related tools

- [Audio Converter](https://convertto.tech/t/audio-converter): Convert audio between MP3, WAV, AAC, OGG and FLAC in your browser.
- [MP3 to M4A Converter](https://convertto.tech/t/mp3-to-m4a): Convert MP3 audio into an M4A (AAC) file — smaller at the same quality.
- [Remove Audio from Video](https://convertto.tech/t/mute-video): Strip the audio track from a video without re-encoding the picture.
- [Audio Trimmer](https://convertto.tech/t/audio-trimmer): Cut a section out of an audio file, with optional fade in and out.
- [Video Compressor](https://convertto.tech/t/video-compressor): Shrink video file size with adjustable quality — locally, with no upload limit.
- [Video Converter](https://convertto.tech/t/video-converter): Convert video between MP4, WebM and MKV entirely in your browser.
- [Video Frame Extractor](https://convertto.tech/t/video-frame-extractor): Pull still frames out of a video as images — for thumbnails and contact sheets.
- [Video to GIF Converter](https://convertto.tech/t/video-to-gif): Turn a video clip into an animated GIF with control over frame rate and size.
- [Video to Frames / Images](https://convertto.tech/t/video-to-images): Extract frames from a video at any interval as JPG or PNG images.