Features

ASRbox turns the small task of "transcribe this file" into a complete workflow.

Local transcription & batch tasks

Drop audio or video into the window and start. ASRbox preflights everything first: audio track presence, format support, duration and chunking — problems are explained before any work begins. Multiple files can be queued at once; tasks can be paused, resumed and retried.

25 local models: Whisper, Faster Whisper (word-level timestamps), MLX Whisper, SenseVoice, Qwen3-ASR, MOSS-Transcribe-Diarize (speaker diarization, 50+ languages)
Model sizes from 145 MB to 6.2 GB — pick your accuracy/speed trade-off
Resumable downloads: pause, resume and retry model downloads

ASRbox — Local transcription & batch tasks

GPU acceleration

No more waiting on long audio. With the optional NVIDIA CUDA kit on Windows, local transcription runs up to ~10× faster; on macOS the Apple GPU (Metal / MPS) is used automatically, and Apple Silicon can also pick the MLX-optimized models.

The CUDA kit is downloaded on demand — never installed if unused
Acceleration status is visible in Settings

ASRbox — GPU acceleration

Edit subtitles & version history

A transcript is never final until you say so. "Edit subtitles" mode makes every segment’s text directly editable in the same row layout as the read-only view; the "Batch replace" tab highlights every match as you type, counts them, and rewrites all of them in one go — perfect for consistent terminology. Either way, saving lands as exactly one immutable version, and every transcription, re-transcription, edit and AI pass is kept as its own version, so you can roll back to any step.

Waveform player synced to each segment, with optional 0.5–3 s padding around previews
"Batch replace": live highlighting and match counts; replace-all still lands as a single version
One save = one immutable version; the full history stays restorable

ASRbox — Edit subtitles & version history

Task center & new interface

v0.3.0 rebuilds the whole interface: the light and dark themes now share the same continuous-surface layout, with a clearer hierarchy that stays calm over long sessions. On desktop the task center is a persistent three-pane workspace — task list on the left, player and transcript in the middle, task status on the right — so filtering, reviewing and exporting all happen in one window without clipping.

Eight accent colors (orange by default) for primary actions, selection and focus
Light/dark theme, interface density, font size and motion preferences — all saved locally
Cmd/Ctrl+K opens global search; on narrow screens the task list folds into a drawer

ASRbox — Task center & new interface

AI subtitle proofreading

Connect any OpenAI-compatible LLM (presets for MiniMax, Kimi, DeepSeek, Qwen, GLM and Ollama) and let it read through your subtitles for typos, omissions and recognition errors. The AI only suggests: you review each change individually, and only accepted changes become a new version. The original transcript is always preserved.

Accept or ignore line by line — always in control
Only subtitle text with limited neighboring context is sent — never audio, file names or paths

ASRbox — AI subtitle proofreading

AI translation & bilingual export

Translate subtitles into any of 14 preset languages, or define your own target. Translations are separate versions too, and can be exported as bilingual subtitle files for learning and sharing.

14 preset languages plus custom targets
Bilingual subtitle export

ASRbox — AI translation & bilingual export

AI chat

Two ways to use it: unbound, it answers questions about using ASRbox itself (with a built-in offline knowledge base); bound to a transcript, you can ask about the content — "summarize this interview", "where do they mention budget" — with timestamped answers you can jump to.

Streamed replies, sessions stored locally
Quotes carry timestamps for quick verification

ASRbox — AI chat

Six export formats

TXT, SRT, VTT, ASS, JSON and Markdown. Into editing software, onto players, into notes, or piped into other tools — one of them always fits.

ASRbox — Six export formats

Online ASR & cloud LLMs

Beyond local models you can use online services: Bcut (free), Aliyun ASR, any OpenAI-compatible endpoint, or a self-hosted HTTP service. Whether to use them — and which one — is entirely your choice; the privacy notes list exactly what each scenario sends.

Online services are optional; everything is local by default
API keys stay on your machine

ASRbox — Online ASR & cloud LLMs

Model & storage management

Every model is labeled with size, language support and device compatibility: how much disk is left and whether a model will run on your machine is known before you download. Remove unused models anytime to reclaim space.

ASRbox — Model & storage management