Free tool

Video to MP3

Convert video to MP3 online. Extract audio from MP4, MOV, MKV, WebM, AVI. Free, no install, no watermark.

Upload a video file. MP4, MOV, MKV, WebM, AVI, and AuTrans extracts the audio as MP3 (or any format you choose). The extracted audio is ready to listen to, archive, or send through AuTrans's transcription product to turn a long interview, lecture, or meeting video into searchable text.

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100% in your browser — your files never leave your device. Free, no sign-up.

How it works

How to use the Video to MP3

  1. 1

    Add your audio

    Drop a file into the Video to MP3 or record straight in your browser. Nothing is uploaded — it runs on your device.

  2. 2

    Edit and adjust

    Trim, convert, tune the EQ, fades and levels, then preview instantly.

  3. 3

    Export or transcribe

    Download the result free, or turn it into a searchable transcript with one click.

Need a transcript?

Once you've cleaned up your audio, AuTrans turns it into a searchable transcript with speaker labels, summaries, and exports to TXT, DOCX, PDF, SRT, and VTT. Built for African languages: Nigerian English, Pidgin, Yoruba, Hausa, Igbo, plus French and Spanish.

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Frequently asked

Questions, answered

Is it legal to extract audio from video?
Extracting audio from your own videos or videos with the creator's permission is fine. Extracting from copyrighted content without permission may violate the platform's terms of service and copyright law. Check the source's terms before extracting.
Does AuTrans support YouTube video URLs directly?
AuTrans currently requires file upload, paste the URL of a video you own, or download the video first using a browser extension. Direct YouTube URL ingestion is on the Phase 2 roadmap.
What video formats can I extract from?
MP4, MOV (QuickTime), MKV (Matroska), WebM, AVI, M4V, and most container formats with an embedded audio track. The extractor reads the first audio stream by default.
Will the extracted audio quality match the source?
If the source video has high-bitrate audio (Apple Lossless, AAC 256+ kbps), the extracted MP3 will match. Output at WAV for a lossless copy, or MP3 320 kbps for a near-identical compressed version.
Can I extract audio in mono or stereo?
Stereo is preserved by default. Convert to mono via the standard audio converter after extraction if you need it for transcription, podcasting, or smaller file size.
Should I output to MP3, WAV, or M4A?
MP3 for general use and email-friendly file sizes. WAV for editing or archival quality. M4A (AAC) for Apple-ecosystem devices and a slight quality edge over MP3 at the same bitrate.
Related transcription use cases
Documentary Interview Transcription
Transcribe documentary interview footage for editorial review, subtitling, and rights documentation.
TEDx Talk Transcription
Transcribe TEDx talks and similar long-form speeches for video captions and event archives.
Online Course Narration Transcription
Transcribe course voice-over narration into student-ready text materials and closed captions.
Keynote Speech Transcription
Transcribe corporate keynote speeches and conference openings for press distribution and archive.
Podcast Transcription Service
Turn podcast episodes into blog posts, show notes, and searchable transcripts. Grow your audience with SEO-friendly text content from every episode.

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All part of AuTrans's free audio toolbox — quick, private, browser-based tools for the everyday audio jobs creators and teams actually do: cut, convert, compress, join, record. No sign-up, no watermarks, nothing leaves your device.

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