ScreenLex: Converts local movie subtitles into an English vocabulary

Info: Machine translation This post was machine-translated from the Chinese original. Wording may be rough in places — the Chinese version is authoritative.

ScreenLex ScreenLex

ScreenLex is a local English learning tool for film and TV produced by HyphenTech: it organizes your existing movie/TV series subtitles offline into an advanced English vocabulary bank graded by exams, accompanied by a sentence-by-sentence learning player and active recall review. **Supports macOS (Apple Silicon) and Windows (x64 arm). **

It does not provide movies or distribute subtitle resources; The built-in player only provides sentence-by-sentence learning and does not replace the complete viewing experience. Runs entirely locally, without uploading any sources or subtitles.

Download

Go to Releases to download the installation package for the corresponding system:

The software’s “Check for Updates” will automatically retrieve and install the new version (macOS and Windows are each updated to the same version number).

Main Features (Consistent on macOS / Windows)

• Scans local movies/series to recognize English SRT and bilingual ASS subtitles;

• Offline extraction of advanced vocabulary, phrases, and Chinese definitions, categorized by Gaokao / CET-4 and CET-6 / Graduate exam / IELTS / TOEFL / GRE;

• Optional AI detailed explanations: example sentences, etymology, memory methods, confusion analysis, cultural background;

• Active recall review + adaptive intervals; Reading aloud, shadowing, dictation;

• Sentence-by-sentence learning player: bilingual subtitles, single sentence / A-B loop, double speed, time point jumping;

• Local Whisper subtitle supplementation, AI proofreading, bilingual subtitle generation, and subtitle checkup;

• For the first time, using “One-Click Configuration” to automatically download and install the required runtime components (FFmpeg, local speech recognition engine, subtitle model), all stored in the program directory, can be reset with “Full Clear” in the wizard.

Platform Differences (Only System Compatibility Differs)

Screenshot

Installation prompt

The current version has not yet been notarized by Apple; macOS will block it. This is not an installation package corruption; just follow the instructions below.

• macOS:

• If prompted “Unable to verify developer”: right-click ScreenLex.app → “Open”, or allow it in “System Settings → Privacy & Security”.

• If you see “Corrupted, cannot open”: This is caused by macOS adding an isolation attribute to an unnotarized app, not a corrupted file. After dragging the app into “Apps,” open “Terminal” and run the following command to remove the isolation property, then double-click it:

sudo xattr -rd com.apple.quarantine /Applications/ScreenLex.app

(If the app is not in "Apps," replace the path above with the actual location of the app.) )

• Windows: If SmartScreen prompts “Windows has protected your computer,” click “More Information” → “Still Run”.

Law

• User Agreement

• Disclaimer

Explanation

ScreenLex is closed-source release software. This public repository is only for publishing installation packages and instructions, and does not include source code.

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I maintain all of these tools myself. Preview builds are clearly labeled; the release pages are the source of truth for downloads, updates and known limits.

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