GuessIt
GuessIt is a python library that extracts as much information as possible from a video filename.
It has a very powerful matcher that allows to guess properties from a video using its filename only. This matcher works with both movies and tv shows episodes.
For example, GuessIt can do the following:
$ guessit "Treme.1x03.Right.Place,.Wrong.Time.HDTV.XviD-NoTV.avi"
For: Treme.1x03.Right.Place,.Wrong.Time.HDTV.XviD-NoTV.avi
GuessIt found: {
    "title": "Treme",
    "season": 1,
    "episode": 3,
    "episode_title": "Right Place, Wrong Time",
    "source": "HDTV",
    "video_codec": "Xvid",
    "release_group": "NoTV",
    "container": "avi",
    "mimetype": "video/x-msvideo",
    "type": "episode"
}
More information is available at guessit-io.github.io/guessit.
This project is hosted on GitHub. Feel free to open an issue if you think you have found a bug or something is missing in guessit.
GuessIt relies on Rebulk project for pattern and rules registration.
GuessIt is licensed under the LGPLv3 license.