DiscRec

A small native app that records your Discord calls. Open it, press record, it finds Discord and captures the call. Press stop, you get one file.

Not a background service. Not a bot. Not a scene collection.

Status: Windows app (download the exe). macOS: clone and bash scripts/macos/run.sh.

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Why this exists

OBS can already do this — Application Audio Capture pointed at Discord. It is free and excellent.

It is also ~200 MB, needs a scene and source configured before it records anything, and is a video production suite you are using for one small job.

DiscRec is that one job, as one binary you press a button in. The Windows release is under 1 MB.

The honest comparison, including when you should just use OBS: docs/09-alternatives.md.

What it does

• Captures Discord's audio only — music, games and notifications stay out
• Mixes in your microphone, so the recording is the whole conversation
• Captures screenshare and Go Live audio, because it records what you hear
• Writes one Ogg/Opus file per session (Downloads/DiscRec/ by default)
• Survives a crash with a playable file

What it deliberately does not do

Auto-start, per-person tracks, video, transcription, cloud anything, mobile. Each was considered and cut; the reasoning is in docs/04-requirements.md and docs/adr/.

Download (Windows)

1. Get discrec.exe from the latest Release.
2. Start Discord, join a call, open DiscRec, press Record.
3. Stop when you are done. The file lands in Downloads\DiscRec\ unless you pick another folder in the app.

First launch reminds you that everyone in the call is being recorded. Discord's Terms require you to tell them; the app cannot say it for you. → docs/06-legal-and-consent.md

Windows 10 (build 20348+) or Windows 11. No installer, no extra runtime.

Building

cargo build --release      # builds for whatever OS you are on
cargo run --release        # the app (Windows)
cargo test

Pass any argument and you get the development harness instead of the window (discrec --help). That path is how soaks and crash tests run.

Windows contributors on this machine's GNU toolchain: start at docs/HANDOFF.md.

Mac: the app is in the tree. On macOS 14.2+:

bash scripts/macos/run.sh

Human playbook: docs/CONTRIBUTING-macos.md. If your Cursor/Claude session is on the Mac, point it at docs/AGENT-macos-e2e.md and tell it to execute that file in order.

How it's built

Rust. One repo. Capture is the only platform-specific part.

src/discord.rs     find Discord's root process
src/capture/       WASAPI process loopback (Windows) · Core Audio process tap (macOS)
src/session.rs     preview meters; mix + write on Record
src/mixer.rs       Discord is the timeline; the mic is resampled to match
src/writer.rs      Opus in Ogg, pages committed as they are made
src/ui.rs          Win32 window + tray
src/macos_ui.rs    AppKit window (same product; compiled as `ui` on macOS)

Picking this up cold? docs/HANDOFF.md is the operational entry, then docs/PROJECT-LOG.md for why the decisions are what they are.

Doc	For
docs/README.md	The full document tree
docs/03-architecture.md	How it works
docs/07-roadmap.md	What to build, in order
docs/CONTRIBUTING-macos.md	Setting up the Mac side
docs/AGENT-macos-e2e.md	Mac agent: build, sign, prove a recording

Status

Windows app	Works. Download from Releases.
macOS	Code is in the repo. Build with bash scripts/macos/run.sh on macOS 14.2+.
4-hour drift soak (R6)	Outstanding measurement, not a missing feature
Release CPU vs 3% (R11)	Same

Licence

MIT