Subliminal

February 13, 2026 ยท View on GitHub

Subtitles, faster than your thoughts.

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:Project page: https://github.com/Diaoul/subliminal :Documentation: https://subliminal.readthedocs.org/ :Community: https://discord.gg/kXW6sWte9N

Usage

.. image:: https://github.com/Diaoul/subliminal/blob/main/docs/assets/demo.gif :alt: Demo of the app CLI usage

CLI ^^^ Download English subtitles::

$ subliminal download -l en The.Big.Bang.Theory.S05E18.HDTV.x264-LOL.mp4
Collecting videos  [####################################]  100%
1 video collected / 0 video ignored / 0 error
Downloading subtitles  [####################################]  100%
Downloaded 1 subtitle

Configuration ^^^^^^^^^^^^^ Arguments can be passed to the CLI using a configuration file. By default it looks for a subliminal.toml file in the default configuration folder (see the CLI help for the exact platform-specific default path). Or use the -c option to specify the path to the configuration file.

Look for this example configuration file <https://github.com/Diaoul/subliminal/blob/main/docs/assets/config.toml>__ or use the generate_default_config function from the subliminal.cli module to generate a configuration file with all the options and their default values::

$ python -c "from subliminal.cli import generate_default_config; print(generate_default_config())"

Library ^^^^^^^ Download best subtitles in French and English for videos less than two weeks old in a video folder:

.. code:: python

#!/usr/bin/env python

from datetime import timedelta

from babelfish import Language
from subliminal import download_best_subtitles, region, save_subtitles, scan_videos

# configure the cache
region.configure('dogpile.cache.dbm', arguments={'filename': 'cachefile.dbm'})

# scan for videos newer than 2 weeks and their existing subtitles in a folder
videos = scan_videos('/video/folder', age=timedelta(weeks=2))

# download best subtitles
subtitles = download_best_subtitles(videos, {Language('eng'), Language('fra')})

# save them to disk, next to the video
for v in videos:
    save_subtitles(v, subtitles[v])

Docker ^^^^^^

Run subliminal in a docker container::

$ docker run --rm --name subliminal -v subliminal_cache:/usr/src/cache -v /tvshows:/tvshows -it ghcr.io/diaoul/subliminal download -l en /tvshows/The.Big.Bang.Theory.S05E18.HDTV.x264-LOL.mp4

Debugging ^^^^^^^^^

By default, subliminal output is minimal. Run with the --debug flag before the download command to get more information::

$ subliminal --debug download -l en The.Big.Bang.Theory.S05E18.HDTV.x264-LOL.mp4

Installation

For a better isolation with your system you should use a dedicated virtualenv. The preferred installation method is to use pipx <https://github.com/pypa/pipx>_ that does that for you::

$ pipx install subliminal

Subliminal can be also be installed as a regular python module by running::

$ pip install --user subliminal

If you want to modify the code, fork <https://github.com/Diaoul/subliminal/fork>_ this repo, clone your fork locally and install a development version::

$ git clone https://github.com/<my-username>/subliminal
$ cd subliminal
$ pip install --user -e '.[docs,types,tests,dev]'

To extract information about the video files, subliminal uses knowit <https://github.com/ratoaq2/knowit>. For better results, make sure one of its provider is installed, for instance MediaInfo <https://mediaarea.net/en/MediaInfo>.

Integrations

Subliminal integrates with various desktop file managers to enhance your workflow:

  • Nautilus/Nemo: See the dedicated project page <https://github.com/Diaoul/nautilus-subliminal>_ for more information.
  • Dolphin: See this Gist <https://gist.github.com/maurocolella/03a9f02c56b1a90c64f05683e2840d57>_. for more details.

Contributing

We welcome contributions from the community! If you're interested in contributing, here are a few ways you can get involved:

  • Browse Issues and Pull Requests: Check out the existing Issues <https://github.com/Diaoul/subliminal/issues>_ and Pull Requests <https://github.com/Diaoul/subliminal/pulls>_ to see where you can help.
  • Report Bugs or Request Features: If you encounter a bug or have a feature request, please create a GitHub Issue.
  • Follow the Contribution Guide: For detailed instructions on how to contribute, please refer to our Contribution Guide <https://github.com/Diaoul/subliminal/blob/main/CONTRIBUTING.md>_.

Your contributions are greatly appreciated and help make this project better for everyone!