SRT Translator

A simple tool for translating SRT subtitle files from any source language to any target language using the OpenAI API.

This repository contains a Python script that supports multiple source and target languages for SRT subtitle translation. By default, it translates from Japanese (ja) to Traditional Chinese (zh-TW).

Features

• Supports multiple SRT file encodings.
• Translates subtitle text using a GPT-4o-mini based model with configurable source and target languages.
• Detailed logging for debugging.
• Verification mode to compare original and translated files.

Requirements

• Python 3.x
• OpenAI Python library
• tqdm
• Other standard libraries (argparse, re, pathlib, logging, json, datetime)

Setup

Install dependencies and configure your environment by setting the OPENAI_API_KEY variable:

pip install openai tqdm

Usage

Run the script from the command line:

python translate.py input_file.srt output_file.srt [--debug] [--verify] [--source LANGUAGE_CODE] [--target LANGUAGE_CODE]

• input_file.srt: Path to the original SRT file.
• output_file.srt: Path where the translated file will be saved.
• --debug: Enable detailed logging for debugging purposes.
• --verify: Verify translation by comparing sample lines from the files.
• --source: Source language code (default: ja).
• --target: Target language code (default: zh-TW).

Logging

Logs are generated in the logs directory with a timestamped filename, providing insights into the translation process.

Translation Process

• Reads the SRT file using several encoding options.
• Identifies subtitle numbers, timestamps, and text blocks.
• Translates each block by sending it to the OpenAI API using the provided language options.
• Saves the translated content in proper SRT format.

License

This project is licensed under the MIT License.