srt-translator-cli 2026.5.31

A powerful script to translate .srt files with concurrent processing support.

SRT Translator

A robust and feature-rich Python command-line tool for translating SubRip (SRT) subtitle files. Supports Google Translate, DeepL, and MyMemory with intelligent mixed-language handling, HTML tag preservation, and resilient error recovery.

✨ Features

• Modular Architecture: Easy to extend with new translation services.
• Multiple Services: Google Translate (default), DeepL, and MyMemory.
• Resilient Recovery: Automatic retries with exponential backoff and resume capability for interrupted translations.
• Parallel Processing: Use --workers to speed up translation of large files.
• Mixed-Language Handling: Sentence-level language detection for mixed subtitles.
• HTML Tag Preservation: Keeps <i>, <b>, etc., styling intact.
• Batch Processing: Translate multiple files or entire directories at once.
• Configuration: Support for .env files for secure API key management.

🚀 Quick Start

Installation

1. From PyPI (Recommended):

   pip install srt-translator-cli
   

2. From Source:

   git clone https://github.com/fam007e/srt_trans.git
   cd srt_trans
   pip install .
   

Developer Setup

For developers wanting to run tests and build the package, we provide a Makefile:

# 1. Create venv
python -m venv .venv

# 2. Setup all dev/test dependencies
make setup

# 3. Run all checks (lint, type-check, tests)
make check

# 4. Build binary
make build

# 5. (Optional) Install in editable mode
pip install -e .

Basic Usage

srt-translator-cli movie.srt -t es

📚 Documentation

For more detailed information, please see our dedicated documentation:

• Usage Guide - Deep dive into CLI options and examples.
• API Reference - How to use SRT Translator as a library.
• Contributing - How to help improve this project.

🛠 Supported Languages

SRT Translator supports over 70 languages. Run the following command to see the full list:

srt-translator-cli --list-languages

⚖ License

This project is licensed under the MIT License. See the LICENSE file for details.

🙏 Acknowledgements

• deep-translator
• pysrt
• langdetect
• nltk