Stem separation.
FromURLs.
Export as video.
Quota Stems is a fast, batch-friendly stem extractor for audio AND video. Load a local file, a whole folder, or paste a URL (including playlists) and it will separate the source into Vocals / Drums / Bass / Other using Demucs, then export everything into neatly named folders.
For macOS and Windows. Free forever.
What makes Quota Stems different
Features you won't find in other stem separators — URL import, video-first exports, and perfect recombination.
URL & Playlist Import
Unique feature: Pull audio and video directly from internet URLs, including YouTube playlists. No other stem separator offers this capability. Paste a link, queue fills, and processing runs hands-free.
- • Import single URLs or entire playlists
- • Automatic download and processing
- • Batch processing for playlists
- • Auto-run option for hands-free workflow
Video-First Stem Export
Unique feature: Export stems as MP4 files that keep the original video stream and replace the audio with the selected stem. Perfect for isolating dialogue from video or creating instrumental videos.
- • Export stems as MP4 (keeps original video)
- • Choose which stem: Vocals, Drums, Bass, Other, or Instrumental
- • Works with any video source
- • Perfect for dialogue isolation from video
Non-Destructive Stems
Perfect recombination: Separate a song into four stems, then recombine them in your DAW to get back the exact original — no frequency doubling or artifacts. Most stem separators can't do this.
- • Stems fold back together perfectly
- • No frequency leakage between stems
- • Studio-quality separation
- • Tested against the best stem separators
Instrumental Export
Export a complete instrumental (no vocals) from any full song. Perfect for remixing, karaoke, or creating backing tracks.
- • One-click instrumental export
- • Mixes Drums + Bass + Other automatically
- • Perfect for remixing
- • Works with audio and video sources
Simple workflow, powerful results
Load files, folders, or URLs. Choose your exports. Click Extract. Done.
Add Sources
Load a single file, an entire folder, or paste a URL. Enable "Treat as playlist/batch" for playlists. Optional: Enable auto-run for hands-free processing.
Choose Exports
Select which WAV stems to export (Vocals, Drums, Bass, Other). Enable Instrumental export. For video sources, choose MP4 stem exports. Optional: Detect BPM.
Extract & Use
Click Extract (or let auto-run handle it). Use "Open Export Folder" to jump to results. Each item gets its own folder with neatly named files.
What you can do with Quota Stems
Removing Vocals
Extract instrumentals for remixing, karaoke, or creating backing tracks. Perfect for producers and DJs.
Isolating Dialogue
Separate dialogue from background music and sound effects in video files. Export as MP4 with clean audio.
Stem Packs
Create stem packs from playlists or folders. Batch process entire collections into organized folders.
Batch Processing
Process entire folders or playlists at once. Auto-run queue for hands-free operation from download to export.
High-quality stems, fast processing
Quota Stems uses Demucs for 4-track separation (Vocals, Drums, Bass, Other). The quality stands up to the best stem separator software available, and processing is fast.
- ✓4-track separation: Vocals, Drums, Bass, Other — the standard format that works for most use cases
- ✓Non-destructive: Stems recombine perfectly without frequency doubling or artifacts
- ✓Fast processing: Quick turnaround for stem extraction, even on large files
- ✓Tested quality: Stands up to the best stem separator software for basic 4-track stems
Why 4-Track Stems?
Not everyone needs every individual instrument separated. Four standard stems (Vocals, Drums, Bass, Other) cover most use cases — remixing, dialogue isolation, instrumental extraction, and stem pack creation.
Ultra-separation (piano, guitar, violin, etc.) may come in future updates, but for now, we focus on delivering the best quality 4-track separation that folds back together perfectly.
Full Featured Walkthrough
A complete guide to using Quota Stems — from installation to separating stems from URLs and exporting as video. Learn how to extract vocals, drums, bass, and other stems from any audio or video source.
Works seamlessly with Quota Mini
Quota Stems creates a quota_handoff.json file for seamless integration with Quota Mini. Extract stems, then chop dialogue fast.
Compare All Quota Apps
See how Quota Stems compares to Quota Mini, VS, and Suite across all features.
| Feature | Quota StemsFree | Quota Mini $79$39 INTRO50 until Jan 31 | Quota VSComing soon | Quota SuiteComing soon |
|---|---|---|---|---|
| Stem Separation | ||||
| URL/Playlist Import | ||||
| Video Stem Export (MP4) | ||||
| Non-Destructive Stems | ||||
| Whisper Transcription | ||||
| Highlight-to-Pad Workflow | ||||
| MIDI Controller Support | ||||
| Pad Banks (16/64) | ||||
| Q-Chop Auto-Chopping | ||||
| DEMUCS Vocal Isolation | ||||
| WAV/MP4 Export | ||||
| Media Pool | ||||
| Theme Designer | ||||
| Q-FX Performance Effects | ||||
| VST FX Hosting | ||||
| Mix Bus Routing (4 buses) | ||||
| Multi-Lane Timeline | ||||
| Audio Recording | ||||
| Automation Lanes | ||||
| Captions & Titles | ||||
| SRT Subtitle Export | ||||
| Mix Bus Routing (4 buses) | ||||
| Speech Cleanup |
Answers, fast
Is Quota Stems really free?▾
Yes! Quota Stems is completely free forever. No subscriptions, no accounts, no hidden fees, and no limits on how many stems you can extract. Download it, use it, and keep using it — it's yours.
What are the system requirements?▾
Windows Minimum:
- Windows 10 or 11 (64-bit)
- Intel Core i5 4th Gen or AMD equivalent
- 4 cores, 2.0 GHz
- 8 GB RAM (16 GB recommended)
- 15 GB free storage (app, models, and working media)
- Integrated graphics
Performance (CPU only): Stem separation can take 5-15 minutes per song.
Windows Recommended:
- Windows 11 (64-bit)
- Intel Core i7 8th Gen or newer, or AMD Ryzen 5/7
- 6+ cores, 3.0+ GHz
- 16 GB RAM (32 GB+ for large projects)
- SSD storage
- NVIDIA GPU with CUDA (GTX 1060 6GB+ or RTX series equivalent)
Performance (GPU acceleration): Stem separation 30 seconds to 2 minutes per song.
macOS Minimum:
- macOS 13 (Ventura) or later
- Intel Core i5 4th Gen or newer (or Apple Silicon)
- 4-core CPU
- 8 GB RAM
- 15 GB free storage (app, models, and working media)
macOS Recommended:
- macOS 14 or 15 on Apple Silicon (M1–M5)
- 16 GB RAM or higher
- SSD storage for faster processing
Quota Stems is optimized for Apple Silicon (M1–M5 chips deliver the best performance), but it also works with older Macs running Intel chips.
How does support work for free software?▾
Quota Stems is fully supported, and we're committed to keeping it working well for all users. Purchasers of Quota Mini receive priority support in our support queue, which means faster response times for technical issues or questions.
Free users still receive support — we just process paid customer requests first. This helps us maintain the quality of service for customers who have invested in the ecosystem while still ensuring everyone gets help when they need it.
Can I use it without an internet connection?▾
Yes — Quota Stems runs completely offline. You don't need an internet connection to extract stems. The only time you need internet is for the initial download and when importing from URLs (which requires downloading the source file first).
Once installed, all processing happens locally on your machine. No cloud uploads, no data collection, and no online requirements.
What audio/video formats does it support?▾
Quota Stems supports most common audio and video formats, including MP4, MOV, WAV, MP3, M4A, and more. You can import local files, entire folders, or paste URLs from YouTube and other platforms.
Exports are available as WAV files for audio stems, or MP4 files for video stems (which keep the original video and replace the audio with the selected stem).
How accurate is the stem separation?▾
Quota Stems uses Demucs for 4-track separation (Vocals, Drums, Bass, Other). The quality stands up to the best stem separator software available, and the stems recombine perfectly without frequency doubling or artifacts.
Most importantly, the stems are non-destructive — you can separate a song into four stems, then recombine them in your DAW to get back the exact original. Most stem separators can't do this.
Can I process entire playlists or folders?▾
Yes! Quota Stems excels at batch processing. You can paste a YouTube playlist URL, select an entire folder, or queue up multiple files. Enable "Treat as playlist/batch" for playlists, and optionally enable auto-run for hands-free processing.
Each item gets its own folder with neatly named files, so you can process entire collections without manual organization.
How does it work with Quota Mini?▾
Quota Stems creates a quota_handoff.json file for seamless integration with Quota Mini. Extract stems with Quota Stems, then drag the vocal stem into Quota Mini to transcribe and chop dialogue at the speed of thought.
This workflow lets you isolate vocals first, then work with clean dialogue in Quota Mini for sampling, editing, or content creation.
Download Quota Stems
Completely free. No subscriptions, no accounts, no limits. Download and start extracting stems today.
For macOS and Windows. Free forever.