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MixPre ISO Extractor: Split polyWAV tracks to WAV files with gain and normalization

Extract individual WAV tracks from a Sound Devices MixPre polyWAV file. Includes per-track gain, peak normalization options, and direct GitHub download.

By Nicolas Blanc June 22, 2026 2 min read

Keywords audio brief ffmpeg GitHub Hooter ISO tracks MixPre MixPre-10 MixPre-3 MixPre-6 polyWAV Python Sound Devices workflow audio

MixPre ISO Extractor is a Windows/Python tool designed to extract ISO tracks from a Sound Devices MixPre polyWAV file. It works with first and second-generation MixPre recorders, such as the MixPre-3, MixPre-6, or MixPre-10, regardless of the number of tracks actually recorded.

What is MixPre ISO Extractor used for?

The purpose is straightforward: to transition from a multi-track field recording to separate WAV files ready for use in editing software, sound design, or audio post-production. The tool eliminates the need to manually configure routing in ffmpeg for every export.

Extraction Options

The interface allows you to select the source folder, verify the presence of ffmpeg, choose whether to overwrite existing files, and then initiate the extraction. Two options make the output more immediately usable: a gain preset to rebalance tracks upon export, and peak normalization to set the maximum level of each extracted file to a target value.

Graphical interface of MixPre ISO Extractor showing WAV folder selection, ffmpeg detection, per-track gain settings and peak normalization option. — The MixPre ISO Extractor interface: select a polyWAV folder, verify ffmpeg, adjust gains, and start the extraction.

Download MixPre ISO Extractor

The source code and the latest version of MixPre ISO Extractor are available on GitHub: download MixPre ISO Extractor on GitHub.

Public blanclab/mixpre-iso-extractor GitHub repository featuring Python files, Windows launchers, and the README. — The public GitHub repository contains the source code, the README, and the Windows launchers for the tool.

GitHub release page for MixPre ISO Extractor v0.1.0 with the download link for the first public version. — The GitHub release provides a downloadable version of MixPre ISO Extractor.