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Subtitle Studio AI

Subtitle Studio generates subtitles locally on Mac, supporting Cantonese, Traditional Chinese, English, and 98+ languages. 100% offline, videos never uploaded, lifetime license with no subscription.

Summary

Subtitle Studio is a macOS-native AI subtitle generator that solves the time-consuming task of manual subtitle creation for video creators. 95%+ accuracy, 100% offline operation, no subscription required, supports 98+ languages including Cantonese and Traditional Chinese.

What is Subtitle Studio?

Subtitle Studio is a subtitle generation app that runs entirely on your Mac using OpenAI Whisper models for speech-to-text transcription. All processing happens on your device—videos never leave your computer. Optimized for Apple Silicon (M1/M2/M3/M4/M5) Neural Engine, transcription runs faster than real-time playback. Exports SRT format and Final Cut Pro native captions, integrating directly into your existing editing workflow.

Core Capabilities

  • Local AI transcription: Uses Whisper models offline on Mac, auto-detects 98+ languages
  • Bilingual subtitles & translation: Translate via local Ollama or public LLM APIs
  • Native NLE integration: Export SRT or Final Cut Pro title layers for seamless use in Premiere, DaVinci, FCP
  • Burned-in subtitle output: Export MP4 videos with embedded subtitles
  • Batch processing: Convert multiple videos simultaneously
  • Audio preprocessing: Voice activity detection (VAD) and noise reduction improve timeline accuracy

Pros

  • Fully offline: Zero data collection, no account required, videos never touch any server
  • Lifetime license: One-time $69 payment, no subscription, includes lifetime software updates
  • Apple Silicon optimized: Built for M-series chips, extremely fast processing
  • High accuracy: 95%+ accuracy with clear audio, minimal manual correction needed
  • Workflow-friendly: Import directly into existing NLE, keep your timeline and shortcuts

Positioning & best fit

Subtitle Studio is built for video creators who value privacy and efficiency, especially those handling sensitive content locally or working in offline environments.

  • Content creators & YouTubers: Quickly generate multilingual subtitles to expand audience reach
  • Video editors: Integrate into Premiere, Final Cut, DaVinci workflows, save manual typing time
  • Enterprises & educational institutions: Process internal training videos or course content without data leaving the organization
  • Multilingual production teams: Support for Cantonese, Traditional Chinese, and 98+ languages meets localization needs

Frequently Asked Questions

Team

Discussion

TM
Tom MongMakerLister

Hello Unwire Launch!

我是 Tom!Subtitle Studio AI 的創作者。

我有一位做影片教學的朋友,前陣子因為把影片上傳到雲端,結果教學影片外洩了,害他幾年來的心血在網路上被免費到處流傳。其實他原本只是想幫影片加上字幕而已。

聽到這件事之後我真的很挫折,後來就一直在想:為什麼沒有一個可以完全離線的字幕 App,讓內容創作者不用擔心影片外洩?於是我開始做很多資料蒐集,也試過不少開源跟付費的軟體,但發現它們大多不是針對影片創作者設計的,而且對廣東話跟台灣國語的辨識準確度都不理想。最後我決定自己來做 Subtitle Studio 這個 App。

Subtitle Studio 是一款 100% 離線的字幕軟體,專為 Apple Silicon Mac 打造。希望能讓創作者很方便地幫影片上字幕,同時確保字幕生成全程離線、準確,而且好編輯。最重要的是,我想做一款一次性買斷的字幕 App,讓內容創作者不用為了產出內容而一直增加額外成本。

如果你對這個 App 有興趣的話,歡迎下載!字幕生成跟翻譯都是 100% 免費的。如果你對產生的字幕感到滿意,可以再一次性購買授權,然後輸出字幕檔,或是直接輸出帶字幕的影片。

有任何問題都歡迎隨時跟我聯絡! Happy Building~

7 days ago

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Tool Info

Launched in 2025

Pricing

Freemium

Company Info

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