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GuessIt - a library for guessing information from video filenames.

Project description


Latest Version LGPLv3 License Build Status Codecov semantic-release

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


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.


v3.7.0 (2023-02-18)


  • week: Add week property (8309bf1)


  • episode: Fix invalid episode range when a weak episode is present before the match (ff0a327)
  • expected: Build output from input string for expected_title/expected_group (90cc215)
  • release_group: Properly extract group name from format "Title (MediaInfo Individual) [Group]" (25bd367)
  • edition: Improve remastered/restored detection (c3611b9)
  • container: Add m2ts to container extensions (05cca80)


  • contributing: Update branch name (4af631d)

v3.6.0 (2023-02-18)


  • audio_codec: Detect "DTS:X" (closes #728) (2bdd8f5)

v3.5.0 (2022-11-01)


  • dependencies: Drop Python 3.6 support (47f5718)


  • audio_codec: Detect "E-AC-3" and "AC-3" (72dc12e)
  • typo: Fix common typo (42a80f0)

v3.4.3 (2021-11-20)


  • setuptools: Drop usage of test_requires and setup_requires (#720) (324b38c)

v3.4.2 (2021-11-08)


v3.4.1 (2021-11-05)


  • other: Detect "Open Matte" with non-space separator (b52a9d9)
  • packaging: Use stdlib importlib.resources in py 3.7+ (1e7b000)

v3.4.0 (2021-11-04)


  • other: Add restored support and match 4k-* patterns (99c30eb)
  • other: Add 2in1 support (0cf07f4)
  • python: Add python 3.10 support, drop python 3.5 support (a8ea88d)
  • audio_channels: Add support for "1.0" audio channels (f22e33d)
  • streaming_service: Add more streaming services (40ce483)
  • other: Add ONA/OAD support (0823e37)
  • other: Add Repack and ReRip followed by a digit support (#653) (997c5c2)


  • source: Avoid Shots to be guessed as Showtime and TS (de85403)
  • screen_size: Add 540i (1a7db40)
  • language: Fix language and subtitle_languages in some situations (#696) (f19cfda)
  • packaging: Use importlib-resources instead of pkgutil (a679a6c)
  • other: Fix Open Matte when written as is (#689) (ddf8e77)
  • frame_rate: Enhance frame_rate when ending with .000 or space separated (#693) (dba9cef)
  • packaging: Use importlib-resources instead of pkg_resources (6ef222e)
  • edition: Better support for "Criterion" (85ac52a)
  • advanced-config: Fix removal of custom rebulk rules (#692) (c2bc1ea)
  • streaming_service: Make SBS ambiguous (777d2b5)
  • streaming_service: Keep pattern to avoid rebuilding rules (62f0c0e)
  • proper_count: Fix proper_count raw output to include all matches (#626) (1faea7e)
  • website: Fix website when it contains a digit (#659) (9e39b7e)


v3.3.1 (2021-02-06)


  • options: Fix custom options.json groups starting/ending (#671) (40f43b1)


  • Lighten README and update doc index page (8e4ba6f)

v3.3.0 (2021-02-03)



  • options: Avoid appending None values to list when merging options (#658) (42978c9)
  • streaming_service: Add iT keyword support for iTunes (#669) (51e0021)
  • streaming_service: Fix regex patterns declared with re: prefix (e02323f)


  • readme: Avoid mixed-content in github pages (2e1f29c)

v3.2.0 (2020-12-23)


  • Add python 3.9 support, drop python 2.7 support (2c8b25e)


  • regex: Use rebulk 3+ to have regex module disabled by default (28658b2)

3.1.1 (2020-05-03)

  • Drop python 3.4 support
  • Use SafeLoader with yaml.load()

3.1.0 (2019-09-02)

  • Add python 3.8 support
  • Use rebulk 2.*
  • Remove v from subtitle_language prefix in default configuration
  • Add Variable Frame Rate value to other property (VFR tag)
  • Use episode words defined in configuration in a rebulk rule
  • Avoid trigger of useless rules consequences
  • Fix possible crash in weak episode removal
  • Fix issue caused by streaming_service property conflicts
  • Fix source validation when more than one pattern match
  • Fix issue with some titles on multiple fileparts
  • Fix issue related to website exclusion inside title

3.0.4 (2019-06-04)

  • screen_size property 540p was added.
  • Fix audio_channel detection for 6.0
  • Fix common words being detected as language
  • streaming_service is now configurable in advanced options
  • Add DC Universe to streaming_service
  • Improve detection when release name in between brackets
  • Improve language detection
  • Fix wrong 3D detection
  • Fix to keep separators for single characters. E.g.: S.W.A.T.
  • Fix Show Name/Season SS/Ep. EE - Title
  • Added This is Us to default expected titles
  • Added suggested_expected to the api to support apps that uses guessit as a library
  • Added Extras detection as other property
  • Add more streaming sites

3.0.3 (2018-10-23)

  • Add MP2 audio_codec value.
  • Proper and Fix have been separated in two distinct other values.
  • Add 1e18 season/episode pattern.
  • Fix false release_group matches with --expected-title option.
  • Fix parent folder ending with a digit detected as title
  • Fix wrong season/year with --type episode option. Serie(s) keyword has been removed from default configuration.
  • Fix missing property when episode_details pattern appears in title.

3.0.2 (2018-10-18)

  • Ensure consistent behavior between CLI and Python module. It's now possible to override advanced_config at runtime through options dict. Rebulk rules are lazily rebuilt when advanced_config is changed since previous call.
  • Refactored command line options and loading behavior related to configuration files (see -c CONFIG, --config CONFIG, --no-user-config, --no-default-config)

3.0.1 (2018-10-17)

  • Removed Extras and Bonus values from episode_details property as those tags may also appear in movies
  • Add Scalable Video Coding, Advanced Video Codec High Definition and High Efficiency Video Coding values to video_profile
  • Add support for Python 3.7
  • Add mk3d value to container
  • Better title cleanup containing acronyms (like Marvel's Agents of S.H.I.E.L.D)
  • Fix issue with ES audio_profile breaking titles
  • Fix crash for files ending with Rip

3.0.0 (2018-05-22)

  • Renamed format property to source.
  • source property Cam is now Camera or HD Camera
  • source property Telesync is now Telesync or HD Telesync
  • source property PPV is now Pay-per-view
  • source property DVB is now Digital TV
  • source property VOD is now Video on Demand
  • source property WEBRip is now Web with additional property `other`: Rip
  • source property WEB-DL is now Web
  • source property AHDTV is now Analog HDTV
  • source property UHDTV is now Ultra HDTV
  • source property HDTC is now HD Telecine
  • screen_size property 360i was added.
  • screen_size property 480i was added.
  • screen_size property 576i was added.
  • screen_size property 900i was added.
  • screen_size property 1440p was added.
  • screen_size property 4K is now 2160p
  • screen_size property 4320p was added.
  • video_codec property h264 is now H.264
  • video_codec property h265 is now H.265
  • video_codec property Mpeg2 is now MPEG-2
  • video_codec property Real is now RealVideo
  • video_codec property XviD is now Xvid
  • video_profile property BP is now Baseline.
  • video_profile property HP is now High.
  • video_profile property XP is now Extended.
  • video_profile property MP is now Main.
  • video_profile property Hi422P is now High 4:2:2.
  • video_profile property Hi444PP is now High 4:4:4 Predictive.
  • video_profile property High 10 was added.
  • video_profile property 8bit was removed. 8bit is detected as `color_depth`: 8-bit
  • video_profile property 10bit was removed. 10bit is detected as `color_depth`: 10-bit
  • audio_codec property DTS-HD was added.
  • audio_codec property AC3 is now Dolby Digital
  • audio_codec property EAC3 is now Dolby Digital Plus
  • audio_codec property TrueHD is now Dolby TrueHD
  • audio_codec property DolbyAtmos is now Dolby Atmos.
  • audio_profile property HE is now High Efficiency.
  • audio_profile property LC is now Low Complexity.
  • audio_profile property HQ is now High Quality.
  • audio_profile property HDMA is now Master Audio.
  • edition property Collector Edition is now Collector
  • edition property Special Edition is now Special
  • edition property Criterion Edition is now Criterion
  • edition property Deluxe Edition is now Deluxe
  • edition property Limited Edition is now Limited
  • edition property Theatrical Edition is now Theatrical
  • edition property Director's Definitive Cut was added.
  • episode_details property Oav and Ova were removed. They are now other: Original Animated Video
  • episode_details property Omake is now Extras
  • episode_details property Final was added.
  • other property Rip was added.
  • other property DDC was removed. DDC is now `edition`: Director's Definitive Cut
  • other property CC was removed. CC is now `edition`: Criterion
  • other property FINAL was removed. FINAL is now `episode_details`: Final
  • other property Original Animated Video was added.
  • other property OV is now Original Video
  • other property AudioFix is now Audio Fixed
  • other property SyncFix is now Sync Fixed
  • other property DualAudio is now Dual Audio
  • other property Fansub is now Fan Subtitled
  • other property Fastsub is now Fast Subtitled
  • other property FullHD is now Full HD
  • other property UltraHD is now Ultra HD
  • other property mHD and HDLight are now Micro HD
  • other property HQ is now High Quality
  • other property HR is now High Resolution
  • other property LD is now Line Dubbed
  • other property MD is now Mic Dubbed
  • other property Low Definition was added.
  • other property LiNE is now Line Audio
  • other property R5 is now Region 5
  • other property Region C was added.
  • other property ReEncoded is now Reencoded
  • other property WideScreen is now Widescreen
  • Added Ultra HD Blu-ray as new source possible value.
  • Added Standard Dynamic Range as new other possible value.
  • Added HDR10 as new other possible value.
  • Added Dolby Vision as new other possible value.
  • Added BT.2020 as new other possible value.
  • Added 12-bit as new color_depth possible value.
  • Added IMAX as new edition possible value.
  • Added Upscaled as new other possible value.
  • Added High Frame Rate as new other possible value.
  • Added Ultimate as new edition possible value.
  • Added Fan as new edition possible value.
  • Added High Resolution Audio as new audio_profile possible value.
  • Added Extended Surround as new audio_profile possible value.
  • Added EX as new audio_profile possible value
  • Added Opus as new audio_codec possible value
  • Added aspect_ratio as new property. Also used to validate if a screen_size is a standard resolution.
  • Fixed unwanted language and country detection for exotic languages.
  • Added default and configurable list of allowed languages and countries
  • Added VC-1 as new video_codec possible value
  • Enhanced dash-separated release_group detection.
  • Changed size output to return guessit.Quantity object.
  • Changed size output to return guessit.Size object.
  • Added audio_video_rate as new possible property.
  • Added video_video_rate as new possible property.
  • Added frame_rate as new possible property.
  • Added disc as a new possible property.
  • Added H.263 as new video_codec possible value.
  • Added VP7 as new video_codec possible value.
  • Added VP8 as new video_codec possible value.
  • Added VP9 as new video_codec possible value.
  • Added Vorbis as new audio_codec possible value.
  • Added PCM as new audio_codec possible value.
  • Added LPCM as new audio_codec possible value.
  • Added Digital Master as new source possible value.
  • Added several new values for streaming_service.
  • Added new options --includes and --excludes.
  • Added Sample as new other possible value.
  • Added Obfuscated as new other possible value.
  • Added Proof as new other possible value.
  • Added Repost as new other possible value.
  • Added advanced guessit configuration to config files.
  • Add support for pathlib.Path objects on guessit API input.

2.1.4 (2017-06-01)

  • Fix broken match function when using rebulk>=0.9.0.

2.1.3 (2017-05-31)

  • Add nzb as new container possible value
  • Add EAC3 as new audio_codec possible value
  • Add FullHD as new other possible value
  • Added python 3.6 support
  • Dropped python 2.6 support
  • Make container values consistent and always lowercase
  • Fix --type movie being ignored for movies that starts with numbers
  • Fix invalid language detection due the common words audio, true and unknown
  • Fix episode type detection when series name contains year followed by SEE pattern

2.1.2 (2017-04-03)

  • Many fixes, additions and improvements (thanks to @ratoaq2).

2.1.1 (2016-12-04)

  • Add ~ to episode/season separators.
  • Add AHDTV, HDTC, SATRip as new format possible values.
  • Add streaming_service property.
  • Add DDP pattern as audio_codec=`DolbyDigital`.
  • Add LDTV as possible tag for other=`LD`.
  • Add StripSeparators Post Processor to strip separators from all matches.
  • Fix invalid guess 1 x 2 with --type episode.
  • Fix part property.
  • Fix cd_count issue with x264-CD.
  • Fix HDD group detected as DolbyDigital.
  • Fix invalid comparator in audio_codec conflict solver.
  • Fix validation of film property.
  • Fix date followed by screen_size invalid guess.
  • Fix episode not detected when smaller filepart repeats the season and uses SSEE pattern.
  • Enhance season/episode conflict solver to keep most specific value.
  • Enhance video_profile detection.
  • Enhance episode/season range and sequence guessing.
  • Enhance performance with rebulk upgrade to 0.8.2.
  • Enhance season/episode.
  • Enhance other=`Complete` guessing.
  • Enhance release_group guessing.
  • Enhance command line options parsing related to unicode.
  • Ensure roman numbers are surrounded with separators to be guessed as numbers.

2.1.0 (2016-09-08)

  • Drop support for regex native module.
  • Remove dependency constraint on python-dateutil.
  • Enhance langage/country guessing in edge cases.
  • Enhance rule to guess release_group in more file templates.
  • Fix edge cases for subtitle language detection.
  • Fix invalid conflict solving in season/episode occuring between SssEee and ssXee pattern.
  • Fix issue when running guessit in non-interactive shell with python 2
  • Guess Dolby keyword as DolbyDigital in audio_codec.
  • Avoid title to be guessed as website (Dark.Net)
  • Avoid season/episode to be guessed when pattern is included inside words.
  • Enhance screen_size to detect 720pHD and 1080pHD
  • Add support for format and video_codec when no separators between themselves. (HDTVx264, PDTVx264, ...)
  • Add rebulk version in --version option.
  • Upgrade rebulk to 0.7.3.

2.0.5 (2016-04-10)

  • Fix inconsistent properties returned by guessit -p.
  • Add support for titles containing dots.
  • Lock python-dateutil dependency to <2.5.2.

2.0.4 (2016-02-03)

  • Add an Exception Report when an unexpected exception occurs.

2.0.3 (2016-01-30)

  • Something goes wrong with 2.0.2 release ...

2.0.2 (2016-01-30)

  • Fix possible issue with unicode characters encoding/decoding.
  • Pypy is now supported.

2.0.1 (2016-01-28)

  • Add support for any type of string with python 2 and python 3 (binary, str, unicode).

2.0.0 (2016-01-27)

  • Final release.

2.0rc8 (2016-01-26)

  • Remove regex native module from required dependencies. It will now be used only if present.

2.0rc7 (2016-01-18)

  • Fix packaging issues on Python 2.7.

2.0rc6 (2016-01-18)

  • Fix packaging issues.

2.0rc5 (2016-01-18)

  • Guessit is now available as a docker container on Docker Hub (
  • country 2-letter code is not added to title value anymore.
  • All container values are now capitalized.
  • alternativeTitle has been renamed to alternative_title and added to the docs.
  • mimetype property is now in the docs.
  • Add more excluded words for language property.
  • Add more possible values for other property.
  • Fix an issue occuring with title values starting with Scr.
  • film property is now guessed only if less than 100 to avoid possible conflicts with crc32.

2.0rc4 (2015-12-03)

  • Add docs.
  • Add exotic screen_size patterns support like 720hd and 720p50.
  • Rename audio_codec value true-HD to trueHD.

2.0rc3 (2015-11-29)

  • Add __version__ to main module.

2.0rc2 (2015-11-28)

  • Single digit episodes are now guessed for --type episode instead of --episode-prefer-number.
  • Fix separators that could cause some titles to be splited with & and ;.
  • Avoid possible NoneType error.

2.0rc1 (2015-11-27)

  • Fallback to default title guessing when expected-title is not found.

2.0b4 (2015-11-24)

  • Add expected-group option.
  • Add validation rule for single digit episode to avoid false positives.
  • Add verbose option.
  • Fix expected-title option.
  • Better unicode support in expected-group/expected-title option.

2.0b3 (2015-11-15)

  • Add support for part with no space before number.
  • Avoid uuid and crc32 collision with season/episode properties.
  • Add better space support for season/episode properties.
  • Ensure date property is found when conflicting with season/episode properties.
  • Fix IndexError when input has a closing group character with no opening one before.
  • Add --type option.
  • Add rebulk implicit option support.

2.0b2 (2015-11-14)

  • Add python 2.6 support.

2.0b1 (2015-11-11)

  • Enhance title guessing.
  • Upgrade rebulk to 0.6.1.
  • Rename properCount to proper_count
  • Avoid crash when using -p/-V option with --yaml and yaml module is not available.

2.0a4 (2015-11-09)

  • Add -p/-V options to display properties and values that can be guessed.

2.0a3 (2015-11-08)

  • Allow rebulk customization in API module.

2.0a2 (2015-11-07)

  • Raise TypeError instead of AssertionError when non text is given to guessit API.
  • Fix packaging issues with previous release blocking installation.

2.0a1 (2015-11-07)

  • Rewrite from scratch using Rebulk.
  • Read MIGRATION.rst for migration guidelines.

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