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Subtle

Subtle is a simple editor and OCR wrapper for subtitles. It was created to convert PGS subtitles to SRT format for MKV files.

It can currently process SRT, PGS and SSA subtitle formats from containers, and output SRT files.

The extraction part requires MkvToolNix to be installed, and the OCR feature requires Tesseract to be installed. This app assumes the tesseract, mkvextract and mkvmerge commands can be called from command line.

The app uses PyQt6 for the GUI, and Enchant for spell checking.

Disclaimer

This is most definitely a work in progress, and there are probably plenty of issues. However, the app works and I've used it to convert subtitles from numerous movies and TV episodes already.

The app is developed on Debian Linux, and I have no idea if it runs on other systems. The file browser certainly assumes that file system root is /, so it probably doesn't work on Windows without modification.

Installation

Install with:

pipx install subtle-gui

Launch with:

subtle

Prerequisites

Subtle relies on MkvToolNix and Tesseract OCR for processing the media files and performing the OCR scanning.

For Debian Linux, they can be installed with:

sudo apt install mkvtoolnix tesseract-ocr