scribeify.ai

Convert MP4 to MP3 — Free Online Audio Extractor

Pull audio out of any MP4 video as high-quality MP3. Perfect for podcasting, music extraction, and audio-only archives.

How to use Convert MP4 to MP3 — Free Online Audio Extractor in 3 steps

  1. 1

    Upload the MP4

    Drag or browse for an MP4 video up to 2 GB. Any codec (H.264, H.265, AV1) supported.

  2. 2

    Pick MP3 quality

    Choose a bitrate — 96 kbps for voice, 192 kbps balanced, or 320 kbps maximum quality.

  3. 3

    Download the MP3

    FFmpeg.wasm extracts locally. Download the MP3 instantly.

Why choose Convert MP4 to MP3 — Free Online Audio Extractor

  • Universal MP3 output

    MP3 plays everywhere — iPhones, Android, cars, smart speakers, legacy MP3 players.

  • Quality presets

    96, 128, 192, 256, 320 kbps. Balance size against fidelity for your use case.

  • Fast conversion

    When MP4 already holds MP3 audio, we stream-copy (instant). Otherwise re-encode at chosen bitrate.

  • No upload

    All conversion runs in your browser via FFmpeg.wasm.

  • Free, unlimited

    No account, no watermark, no file-count limit.

Who uses Convert MP4 to MP3 — Free Online Audio Extractor

  • Podcast production

    Extract the audio of a video podcast recording as MP3 for standalone episode publishing.

  • Music from music videos

    Save the audio of a music video MP4 for personal listening on a portable MP3 player.

  • Lecture audio

    Extract MP3 from a recorded lecture for commute listening or transcription submission.

Built for creators worldwide

Built for creators, journalists, students, and researchers worldwide.

Frequently asked questions

What MP4 audio codecs are supported?
AAC, MP3, AC-3, E-AC-3, Opus — essentially every audio codec found in MP4 files.
What bitrate should I pick?
For spoken-word content, 96-128 kbps is fine. For music, 192 kbps is balanced; 320 kbps is near-CD quality.
Will quality be lost?
If the source MP4 already has MP3 audio and you pick a matching bitrate, we stream-copy — no loss. Otherwise a single re-encoding step at your chosen bitrate.
What is the size limit?
Up to 2 GB per MP4 reliably. For very large files, split first.
Are my files uploaded?
No — all processing runs in your browser.
Can I get an M4A or WAV instead?
Yes — use our Video to Audio tool for format flexibility (M4A, WAV, AAC, OGG options).

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