Which audio format should I choose when extracting from video?

Pick MP3 for general use and the widest compatibility, WAV for lossless, maximum-fidelity audio, AAC for social media and Apple devices, and OGG for open-source projects.

Is there a file size limit for extracting audio from video?

The tool itself doesn't impose a fixed limit — the real ceiling is the RAM available to your browser to process the video. Most videos under a couple of gigabytes work fine on a modern laptop or desktop.

How do I extract audio from an MP4 without losing quality?

Choose WAV for a lossless copy of the original audio track, or MP3/AAC at 320 kbps if you want a smaller file with negligible quality loss. Avoid low bitrates like 64-96 kbps unless the source is voice-only.

What does volume normalization do?

It automatically adjusts the audio to a more consistent loudness level, taming loud peaks and boosting quiet passages so the result sounds even throughout.

Can I add a fade in and fade out to the extracted audio?

Yes, enable the fade option and it applies a two-second smooth transition at the start and, when the clip is long enough, at the end of the extracted audio.

Audio Extractor

Extract audio from any video file as MP3, WAV, AAC or OGG — 100% browser-based, no upload to any server, no file size limits, completely free.

Updated May 2026

Select Video File

Drag & drop or click to browse (MP4, MKV, MOV, AVI, WebM)

Frequency Visualization

STATUS: IDLE

Waiting for file… 0%

Output Settings

File Format

Quality (Bitrate)

Normalize Volume

Equalize audio peaks

Fade In / Out

Smooth transition at start/end

100% local — your video never leaves this browser tab. No server, no upload, no data collection.

Expert Tip

For podcasts, use 192 kbps and enable Normalize Volume to ensure consistent audio levels across episodes.

How to extract audio from video

From video file to audio track, without leaving the browser

1. Upload the video

Drag and drop or select the file — no upload to a server and no size cap enforced by the tool.

2. Pick format and options

Choose MP3, WAV, AAC or OGG, then set bitrate, volume normalization and fade in/out.

3. Extract and download

Processing runs locally in your browser and the audio file downloads straight to your device.

What this video to MP3 converter does

FFmpeg.wasm running 100% locally, no server round-trip

Four output formats

Export as MP3, WAV, AAC or OGG depending on what your project needs.

Volume normalization

Automatically evens out loud peaks and quiet passages before exporting.

Configurable fade in/out

Add a smooth transition at the start and end of the extracted audio.

No artificial file size limit

Processing is bound only by your device's RAM, not by an upload cap some server imposes.

Example scenarios

Scenario

Recommended setting

Podcast from a screen or camera recording

MP3, medium bitrate, normalization on

High-fidelity audio for further editing

WAV, uncompressed

Short clip for social media

AAC, with a short fade in/out

When you'll reach for this tool

The most common reasons people extract audio from video

Podcasts and audio content

Pull the audio track out of a video recording to publish as a podcast episode.

Meetings and sensitive content

Extract audio from meetings, medical consultations or legal hearings without sending the video to an external server.

Music and audio clips

Isolate a video's soundtrack so you can reuse it in another project.

Transcription and subtitling

Generate a lightweight audio file to feed into a transcription tool instead of uploading the full video.

Something not working? Start here

Very large files stall on your device

Because processing uses your browser's RAM, very long videos can need more memory than your device has available.

Picking WAV when you don't need it

WAV is uncompressed and produces large files. Use MP3 or AAC whenever file size matters more than maximum fidelity.

Expecting cloud-server processing speed

Since everything runs locally, extraction speed depends on your device's processing power, not on a remote server.

Why use this audio extractor

It runs on FFmpeg.wasm to process everything inside the browser — your video is never uploaded anywhere, which matters for sensitive footage like meetings, medical consultations or legal hearings.

There's no artificial file size limit: the only real ceiling is your own device's memory, unlike many online converters that cap uploads at a few minutes or a few hundred megabytes.

Frequently asked questions

No. All processing happens in your browser via FFmpeg.wasm, a WebAssembly build of FFmpeg. The file never leaves your device, which makes this safe for private or confidential footage.

Resources

FFmpeg.wasm

The WebAssembly port of FFmpeg that powers this tool's audio and video processing directly in the browser.

FFmpeg — official documentation

Reference for the codecs and formats supported by the engine behind this tool.