IMI Library
Audio Extraction Tool
Extract high-quality MP3 audio from MP4 video files. All processing happens locally on your machine — nothing is uploaded.
First Time Setup
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1
Click Download Launcher above
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2
a. Unzip the downloaded file — you’ll get an
IMI-Library folder
b. Open the folder and double-click IMI-Library-Install.command
c. macOS will show a security warning — go to System Settings → Privacy & Security, click Open Anyway, and enter your system password
(First time only — macOS remembers after that)
-
3
The launcher installs Python and FFmpeg if needed (first time only, ~1-2 minutes)
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4
Your browser opens with the extraction tool. Select a folder and start processing.
-
1
Click Download Launcher above
-
2
a. Unzip the downloaded file — you’ll get an
IMI-Library folder
b. Open the folder and double-click IMI-Library-Install.bat
c. Windows SmartScreen may show a warning — click More info, then Run anyway
(First time only — Windows remembers after that)
-
3
The launcher installs Python and FFmpeg via winget if needed (first time only, a few minutes on first install)
-
4
Your browser opens with the extraction tool. Select a folder and start processing.
Returning users: Just run the launcher again — it pulls the latest version automatically (~5 seconds).
🖥️
Desktop Required
This tool requires a desktop computer (Mac or Windows) with Chrome, Firefox, or Safari. It processes video files locally and cannot run on mobile devices.