WTranscriber

Offline audio transcription app built with Tauri 2, Vue 3, TypeScript, and Rust. It runs speech recognition locally, adds speaker labels, and can suggest file names with a local LLM.

Main engines:

• ASR: Parakeet, Whisper.cpp, GigaAM
• Diarization: Sortformer ONNX, pyannote + TitaNet ONNX
• Language detection: Silero Lang95 ONNX
• Naming: Qwen3 GGUF via llama.cpp

Requirements

• just
• Windows: just setup installs the rest (Rust, Bun, VS Build Tools, CMake, CUDA, …)
• Linux: Rust 1.88 (rust-toolchain.toml), Bun, Tauri platform prerequisites
• Android builds: Android Studio SDK/NDK and JDK 21

Desktop development works on Windows and Linux. just build is a Windows shortcut for the full dev release matrix: Windows NSIS, Android APK, and Linux .deb. macOS is not in the release matrix.

Quick start

just setup             # fresh-clone setup: toolchain (Windows), JS deps, git hooks, cargo prewarm
just dev               # desktop HMR
just android           # clean-start an Android USB HMR session
just check             # full local quality gate
just build             # full dev release matrix (Windows host) → releases/dev/
just release           # publish releases/dev/ to the rolling dev prerelease
just release --stable  # bump patch, check, build, publish stable

Use just --list for all recipes. Developer workflow details live in AGENTS.md and docs/dev-loop.md.

Common tasks

Need	Command
Stop dev sessions	just dev stop
Android APK only	bun scripts/android-install.ts
Reinstall Android APK	bun scripts/android-install.ts --force
Headless emulator	bun scripts/android-emu.ts
Changed-file checks	just check-changed --staged
Stable release	just release --stable
CLI model catalogue	cargo run --manifest-path src-tauri/Cargo.toml --bin wt -- models list

Optional Windows CUDA setup

just setup installs or repairs the Windows host toolchain, CUDA Toolkit 12.x, cuDNN 9, and the sherpa-onnx CUDA runtime. The CUDA pieces can also be installed individually:

just cudnn         # cuDNN 9 (CUDA 12)
just sherpa-cuda   # sherpa-onnx CUDA runtime
just doctor        # verify prerequisites

CUDA is optional. CPU builds and Android builds still work without a CUDA GPU.

CLI

After a release install, use wt. During development, run it through Cargo:

cargo run --manifest-path src-tauri/Cargo.toml --bin wt -- audio.wav
cargo run --manifest-path src-tauri/Cargo.toml --bin wt -- -l en --speakers 3 meeting.ogg
cargo run --manifest-path src-tauri/Cargo.toml --bin wt -- --no-diarize a.wav b.mp3
cargo run --manifest-path src-tauri/Cargo.toml --bin wt -- --device cpu --no-cache a.wav
cargo run --manifest-path src-tauri/Cargo.toml --bin wt -- models list
cargo run --manifest-path src-tauri/Cargo.toml --bin wt -- models install whisper-cpp-large-v3-turbo-q8
cargo run --manifest-path src-tauri/Cargo.toml --bin wt -- models status parakeet-tdt-0.6b-v3-int8

The CLI writes JSON transcripts next to the input files.

Downloads and disk use

The installer is small. Models and native runtimes are downloaded on first use into the OS user data directory:

• Windows: %APPDATA%\asolopovas\wtranscriber\
• Linux: ~/.local/share/wtranscriber/
• Android: app-private storage

Default essentials are about 1.6 GB before any desktop runtime downloads:

Component	ID	Size
ASR	parakeet-tdt-0.6b-v3-int8	670 MB
Language detection	silero-lang95-onnx	16 MB
Diarization	sortformer-v2-onnx-4spk	492 MB
Local rename LLM	qwen3-0.6b-q4km	397 MB

Desktop CUDA runs also download CUDA runtimes such as sherpa-onnx and cuDNN. The local rename feature downloads a separate llama.cpp runtime. Download archives are kept in cache so reinstalls are faster.

Model IDs

ASR:

• parakeet-tdt-0.6b-v3-int8 — default, 25 European languages, Android-friendly
• whisper-cpp-large-v3-turbo-q8 — multilingual Whisper fallback
• gigaam-v3-ru — Russian-specialised model

Diarization:

• sortformer-v2-onnx-4spk — default, up to 4 speakers
• sherpa-pyannote-titanet — fallback for other cases

LLM:

• qwen3-0.6b-q4km — default rename model
• qwen3-1.7b-q4km — larger rename model

Run wt models list for install status and exact sizes.

More docs

• docs/dev-loop.md — desktop and Android development loop
• docs/android.md — Android prerequisites and bootstrap contract
• docs/asr-pipeline.md — current ASR and diarization routing
• docs/release.md — release commands, artifacts, signing, recovery
• docs/tmp.md — scratch files and liveness logs

License

MIT