Stem Studio 1.1.0 — Windows 11 (prerelease)

First Windows installer for Stem Studio 1.1.0.

Downloads

Your machine	File
Windows 11 (x64)	Stem-Studio-1.1.0-win-x64.exe

macOS and Linux builds are published separately under the tagged v1.1.0 release.

Install on Windows

1. Download the .exe and (optionally) verify it against SHA256SUMS-windows-x64.txt:
   certutil -hashfile Stem-Studio-1.1.0-win-x64.exe SHA256
2. The build is unsigned, so SmartScreen will warn: click More info → Run anyway.
3. The installer runs per-user — no admin rights needed. On first run the app provisions its managed, on-device separation runtime (bundled FFmpeg; Python fetched into your user data folder). No admin rights and no system Python or FFmpeg required.

Notes

• This is a prerelease, unsigned build. Verify the checksum before installing.
• The bundled FFmpeg is GPL-3.0-or-later. Its corresponding source archives, the SPDX/CycloneDX SBOMs, media provenance, and third-party license/notice files are attached alongside the installer (see THIRD_PARTY_NOTICES.md, MODIFICATIONS.md, and FFMPEG_SOURCE_OFFER.md).
• Stem separation uses the TIGER model; its Apache-2.0 and upstream MIT license texts are attached.

Windows support contributed and maintained by Gumbii Digital.

macOS media tool build assets

Pinned, audited FFmpeg and FFprobe build assets for macOS Apple silicon, consumed by npm run package:mac. Downloading these lets a package build skip compiling FFmpeg from source while keeping the same GPL provenance and audit checks.

Stem Studio 1.1.0

New: Polish dialogue — an optional toggle that cleans music and effects bleed out of the dialogue stem after separation. Whatever it removes is folded into the SFX stem, so the four delivered files still sum back to your original mix sample-for-sample. Off by default; best on dialogue-heavy footage.

Also available via the worker CLI (--polish-dialogue) and the MCP server (polish_dialogue parameter on separate_stems).

Download: Stem Studio-1.1.0-arm64.dmg (macOS Apple Silicon)

Created by Sam Wasserman — wassermanproductions.com · wasserman.ai

Stem Studio 1.0.0

First release of Stem Studio — split any married mix into Dialogue, Music & SFX stems, locally on your machine.

Downloads

• macOS (Apple Silicon): Stem Studio-1.0.0-arm64.dmg
• Linux arm64 builds (AppImage/deb) can be produced from source — see the README.

Highlights

• Drop in a video or audio file; get four sample-aligned 48 kHz/24-bit WAVs: Married Mix, Dialogue, Music, SFX
• Optional multitrack .mov export — original picture with the three stems as labelled tracks, ready for your NLE
• The three stems always sum back to the original mix exactly — nothing is ever lost
• Fast / High / Max quality tiers; hardware-aware defaults (Apple Silicon GPU, NVIDIA CUDA, or CPU)
• MCP server included for driving separations from AI agents and scripts

Created by Sam Wasserman — wassermanproductions.com · wasserman.ai