Free Online MP3 Extractor from Video

Get studio-quality 192kbps audio from any video file — MP4, MKV, AVI, MOV, WebM, FLV. No install needed, 100% server-side, auto-delete after 1 hour.

Extract MP3 from Video
Upload a video file and get a studio-quality MP3 back.

About this video-to-MP3 extractor

Got a favorite MV downloaded from YouTube and only want the audio for offline phone listening? An online lecture video to turn into a commute-friendly podcast? OneAudio Extractor splits the audio track out of the video container and outputs studio-quality MP3 in seconds.

Powered by FFmpeg — the industry-standard media processing library — it losslessly extracts the audio track inside the video and re-encodes as 192kbps CBR MP3 (or keeps the native codec if it's already AAC). Supports 20+ input video formats. Max 200MB — enough for a 1-hour HD video or a 15-20 minute 4K clip.

  • Supports MP4, MKV, AVI, MOV, WebM, FLV, 3GP, WMV — 20+ formats
  • Studio-quality 192kbps CBR MP3 output
  • Source sample rate (44.1kHz / 48kHz) and stereo preserved
  • Up to 200MB file, 10-30 second processing
  • 100% free, no watermark, no usage cap
  • Files auto-delete after export — safe and private

Extract MP3 from video in 3 steps

  1. 1

    Upload the video from your device

    Drag and drop or click. Supports MP4, MKV, AVI and 18+ more formats, up to 200MB.

  2. 2

    Click "Start Extracting"

    Server-side FFmpeg pulls the audio track and encodes MP3. Your RAM stays free.

  3. 3

    Download the MP3 to your device

    After 10-30 seconds (depending on video length), the MP3 is ready. Click DOWNLOAD to save to phone, computer, or cloud.

Real uses of MP3 extraction

Save music from YouTube MVs
Download the YouTube video with yt-dlp, then run through OneAudio Extractor for an offline MP3.
Turn lecture videos into podcasts
Extract the audio, listen on the commute instead of sitting in front of a screen.
Create ringtones from movies
Cut your favorite OST clip → extract MP3 → trim with Trimmer → convert to M4R for iPhone.
Save interview recordings as audio
Recorded video interview → audio-only → much easier to share on Zalo or Messenger.

Frequently asked questions about MP3 extraction

Is my video file safe?
Yes. Files process on a private server and auto-delete right after export or within 1 hour. No storage, no third-party sharing.
What's the MP3 output quality?
192kbps CBR — streaming standard. Sounds great on everything from earbuds to car stereos.
Any size cap?
200MB per upload. For longer videos, pre-trim with the Trimmer or split into chunks.
Is there a watermark in the MP3?
None. The output is fully clean — no embedded tones or logo.
Which browsers work?
Chrome, Firefox, Edge, Safari, Cốc Cốc — desktop and mobile.
Why does my file error out?
Usually a rare codec (e.g., unlicensed H.265 HEVC). Convert to MP4 H.264 first with HandBrake or CapCut, then re-upload.
Can I paste a YouTube link directly?
No — against YouTube's Terms of Service. Download the video first via yt-dlp or a licensed tool, then upload to OneAudio.