Subtitle Translator is an open-source desktop application that uses large language models, including ChatGPT, to translate subtitles into multiple languages. It considers preceding and following dialogue to produce context-aware translations that preserve conversational meaning. The application supports SRT, ASS, SSA, and WebVTT subtitle formats. Its Strict mode maintains a one-to-one correspondence between original and translated subtitle cues. Adaptive mode can merge or split adjacent cues to improve translation flow and readability. Users can generate bilingual ASS subtitles with separate timelines for the original and translated text. Translation progress can be saved as JSON checkpoints, allowing interrupted projects to resume without starting over. The application also includes automatic repair mechanisms and fallback processing to maintain valid subtitle output.
Features
- AI-powered subtitle translation using ChatGPT and large language models
- Context-aware translations that consider surrounding dialogue and sentence meaning
- Support for SRT, ASS, SSA, and WebVTT subtitle formats
- Strict and Adaptive translation modes with flexible subtitle cue handling
- Bilingual ASS subtitle generation with independent source and translation timelines
- JSON translation checkpoints for resuming interrupted projects