DeepSubX
Translate and extract subtitles with DeepL and optional Plex integration
35 stars 1 forks last commit first released MIT
Actively maintained
Last commit 7 Mar 2026.
DeepSubX is a Dockerized application that extracts embedded subtitles and translates external subtitle files for movies and TV shows using the DeepL API. It provides a web UI for batch processing media folders and can optionally notify a Plex server to refresh its library after translations are added.
Key Features
- Translate subtitle files (SRT, external subtitles) using the DeepL API
- Extract embedded subtitles from video files and output translated subtitle files
- Optional Plex integration to trigger library updates after translations
- Web UI built with Vite and React for browsing and processing media folders
- Configurable via environment variables and designed to run in Docker / Docker Compose
Use Cases
- Translate entire movie and TV show libraries into a target language for local viewing
- Automatically refresh a Plex media server after generating translated subtitles
- Batch-process new releases or large collections of media files using a containerized workflow
Limitations and Considerations
- Requires a DeepL API key (network access and API usage costs apply); no built-in offline/local translation models
- Designed to run in Docker; manual setup without containers may require additional tooling
- Focused on extraction and translation; it is not a full subtitle editor or advanced subtitle timing fixer
DeepSubX is suited for self-hosted media enthusiasts who need automated subtitle translation and simple Plex workflow integration. It emphasizes straightforward batch processing and containerized deployment for media collections.
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