MP4 to MP3 Converter
Extract the audio track from a video clip, right in your browser.
100% processing in your browser. Your files never leave.
How MP4 to MP3 Converter works
1. Upload the file
Drop it on the belt or choose it manually. It stays on your device.
2. Local processing
The engine runs in your browser and transforms the file, with a live log of every step.
3. Download the result
The converted file drops into the output tray, ready to download instantly.
Why PixlPulse
Privacy
Your files never leave your browser.
Free
No account, no watermark, no hidden limits.
Offline
Works without a connection too, as a PWA.
Fast
Local processing, no upload time or queue.
About MP4 to MP3 Converter
Extracting audio from a video file is useful for podcasters, musicians, or anyone who wants a clip's soundtrack without the video. This MP4 to MP3 converter reads the MP4/MOV container, decodes the audio stream (usually AAC), and re-encodes it to MP3 at your chosen bitrate — directly in your browser, with no server upload. Choose between 128 and 320 kbps depending on your needs: 128k for voice/podcasts, 320k for high-quality music. The original file stays untouched, and the result can be downloaded as soon as the conveyor reaches the output zone.
Frequently asked questions
No. Decoding and re-encoding happen locally, powered by ffmpeg.wasm running directly in your browser. The file never leaves your device.
For voice or podcasts, 128–192 kbps is enough. For music, we recommend 256–320 kbps to keep the original quality as close as possible.
MP4 and MOV are supported directly. Most clips filmed on a phone or downloaded online work without issues.
The limit depends on available browser memory, not a server. Files of a few hundred MB work fine on a modern laptop.