How to Extract Audio from Video: 4 Free Ways

Short version: there are four main ways to pull an audio track out of a video — a converter app on your phone, an online tool in your browser, a free desktop app (VLC or Audacity), and — if preserving the original quality matters — a one-line FFmpeg command. Below is how to do each and when to pick which.

Disclaimer: use these methods only on videos you have rights to — your own recordings, coursework, lectures, interviews or content you're licensed for. Extracting audio from third-party videos can violate copyright.

Contents

1. Quick pick
2. MP3, AAC, WAV — which format to choose
3. On Android
4. Online in a browser
5. On the desktop: VLC and Audacity
6. Lossless with FFmpeg
7. FAQ

Quick pick

MP3, AAC, WAV — which format to choose

MP3 — the universal format; plays anywhere. Great for voice, podcasts and everyday music. Good balance of quality and size.

AAC — a more modern codec: at the same file size it sounds better than MP3. Supported by every current device and player. AAC is what's usually inside an MP4 container, so extracting "as-is" from most videos gets you AAC.

WAV — uncompressed, maximum quality, but very large files. Used for professional editing and mixing; not practical for everyday storage.

FLAC — lossless compression: quality equal to WAV, size roughly half. A good choice when you need to keep original quality but want a smaller file.

Bitrate by content type:

• Voice, podcasts, interviews — 96–128 kbps
• Standard-quality music — 192 kbps
• High-quality music — 256–320 kbps

For most everyday needs, MP3 at 192 kbps is a solid default. If the source track inside the video is already AAC, it's better to just copy it rather than re-encode (see the FFmpeg section).

On Android

Google Play hosts dozens of near-identical apps called "Video to MP3 Converter." They all work the same way: open a video, pick a format and bitrate, wait for the conversion. Here is the general workflow that applies to almost any of them.

1. Install a "Video to MP3 Converter" from Google Play (from Inverse.AI, InShot, EasyEsports or another well-rated developer).
2. Open the app and grant media access. On Android 13+ choose "Allow all photos and videos" — otherwise the app only sees files you explicitly select.
3. Pick the video from your gallery.
4. Choose the format (MP3 or AAC) and bitrate. 128 kbps for voice; 192–320 kbps for music.
5. Trim if needed — most apps have a basic trim tool.
6. Start the conversion; the result lands in the app's output folder, from where you can share it, set it as a ringtone, or open it in any player.

Worth knowing:

• Free versions show ads, and some features (batch processing, 320 kbps, lossless mode) are usually behind a Pro upgrade.
• All these apps run on a bundled FFmpeg build — the quality difference between them is minimal; what varies is UI and how aggressive the ads are.
• If an app asks for access to your contacts, calls or SMS "to convert a video," that's a red flag. Pick a different one.

Online in a browser

For a one-off job, the simplest option is online-audio-converter.com. It's free, no aggressive ads, handles most video formats, and lets you save the result straight to your disk, Google Drive or Dropbox.

1. Open files. On the homepage click "Open files" and pick your video. The service handles files up to about 2 GB (the current limit is shown on the site itself).
2. Pick the format — MP3, AAC, OGG, FLAC, WAV and others.
3. Tune the quality. Under "Advanced settings" you can set the bitrate (constant or variable), sample rate and channel count. Variable bitrate (VBR) saves space without hurting quality on quieter passages.
4. Hit Convert and wait.
5. Download the result or save it to your cloud storage.

Pros: no installation, works on any computer, and the same tool converts between audio formats too. Cons: you're limited by upload/download time, and free tiers cap file size.

On the desktop: VLC and Audacity

You don't need a dedicated audio-extractor app in 2026 — VLC (the free media player almost everyone already has) and Audacity (free audio editor) both handle the job. Available on Windows, macOS and Linux.

VLC — the simplest route

1. Open VLC → Media → Convert / Save (or Ctrl+R).
2. Click Add, pick your video, then Convert / Save at the bottom.
3. In the "Profile" dropdown pick Audio — MP3 (or Audio — CD for WAV).
4. Set the output name and path in "Destination file" → Start.

Under the hood, VLC uses the same FFmpeg engine — just with a GUI. No file-size limits.

Audacity — when you need to edit the audio too

Audacity is the right pick if you also want to clean up the sound: remove noise, level the volume, splice clips together.

1. Open Audacity → File → Import → Video. The app imports the audio track.
2. Apply effects as needed: Normalize, Noise Reduction, Compressor, and so on.
3. Export: File → Export → Export as MP3 / WAV / FLAC.

For MP4 files Audacity may ask you to install an FFmpeg library once — it walks you through the steps in the dialog itself.

Lossless with FFmpeg

All the methods above re-encode the audio — the original track is decoded and re-compressed into your target format, which always costs some quality. If the video already contains a usable audio track (typically AAC in MP4/MKV, or Opus in WebM), you can just copy it as-is, no re-encoding. It's both faster (seconds instead of minutes) and lossless.

The standard tool for this is FFmpeg, a free cross-platform command-line utility (Windows, macOS, Linux). Install via the official site; on Windows the easiest route is winget install ffmpeg, on macOS brew install ffmpeg.

The basic command — extract audio without re-encoding:

ffmpeg -i input.mp4 -vn -acodec copy output.aac

Breakdown:

• -i input.mp4 — input video file
• -vn — "video none," skip the video stream
• -acodec copy — copy the audio codec as-is
• output.aac — output file; the extension must match the actual codec inside (.aac for AAC, .mp3 for MP3, .opus for Opus, .ac3 for AC-3).

Not sure what codec is inside? Run ffmpeg -i input.mp4 on its own — FFmpeg will print details of every stream, including the audio codec.

Extract a specific audio track (when there's more than one, e.g. original and dub):

ffmpeg -i input.mkv -map 0:a:0 -acodec copy audio_track1.aac

-map 0:a:0 means "from the first input file, take the first (0) audio stream." The second stream would be 0:a:1, and so on.

Batch a whole folder (Windows cmd):

for %i in (*.mp4) do ffmpeg -i "%i" -vn -acodec copy "%~ni.aac"

The same on macOS/Linux (bash):

for f in *.mp4; do ffmpeg -i "$f" -vn -acodec copy "${f%.mp4}.aac"; done

What if you need MP3 specifically? Then re-encoding is unavoidable — but you can set a good bitrate right away:

ffmpeg -i input.mp4 -vn -c:a libmp3lame -b:a 192k output.mp3

FAQ

Can I extract audio without any quality loss?
Yes — by copying the audio track (-acodec copy in FFmpeg). The audio is preserved bit-for-bit, no re-compression.

Where is the extracted file saved?
Most converters let you set the path manually. On Android look for an "Output folder" setting; online tools drop the file into your browser's downloads folder; in VLC and FFmpeg you specify the destination yourself.

How long does extraction take?
Regular conversion runs from seconds to a few minutes, depending on video length and device power. Lossless extraction via FFmpeg or VLC is typically seconds, even for large files, because the data is copied rather than re-encoded.

Which audio format is best?
For everyday listening — MP3 or AAC (128–192 kbps for voice, 256–320 for music). For archive and professional work — FLAC or WAV.

How do I avoid quality loss during conversion?
Copy the audio track as-is whenever possible (-acodec copy). If a different format is required, pick a high bitrate and avoid re-encoding the same file multiple times — every cycle degrades the sound.