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Clairmeta is a python package for Digital Cinema Package (DCP) probing and checking.
License:BSD 3-Clause "New" or "Revised" License
Platforms:Should work on Windows, macOS, Linux, Tested on : macOS 10.12


Clairmeta is a python package for Digital Cinema Package (DCP) probing and checking. This project status is Beta, the following needs to be done for the release :

  • Large scale tests on lots of DCPs (including D-Box, DVIs, OCAP, CCAP, ...)


  • DCP Probe : metadata extraction of the whole DCP, including all XML fields and MXF assets inspection.
  • DCP Checker : advanced DCP validation tool, including (non exhaustive):
    • SMPTE / Interop standard convention (naming, …)
    • Integrity (MIME type, size, hash) of all assets
    • Foreign file identification
    • XSD Schema validation for XML files (VOLINDEX, ASSETMAP, CPL, PKL)
    • Digital signature validation (CPL, PKL)
    • Intra / Inter Reels integrity and coherence
    • Metadata match between CPL assets and MXF headers
    • Re-link VF / OV
    • Picture tests : FrameRate, BitRate, …
    • Sound tests : Channels, Sampling, …
    • Subtitle : Deep inspection of Interop and SMPTE subtitles
  • DSM / DCDM Checker : basic image file sequence validation with some specific rules.


ClairMeta can be used as a general command line tool as well as a python library.

Examples for command line calls:

  python3 -m clairmeta.cli probe -type dcp path/to/dcp
  python3 -m clairmeta.cli probe -type dcp path/to/dcp -format json > dcp.json
  python3 -m clairmeta.cli probe -type dcp path/to/dcp -format xml > dcp.xml
  python3 -m clairmeta.cli check -type dcp path/to/dcp

Installation / Dependencies

Installation notes are available on the github page:


  • Python
    • Should work on python 2.7 and python 3.3+
    • Tested on : python 2.7, python 3.6
  • Platform
    • Should work on Windows, macOS, Linux
    • Tested on : macOS 10.12
  • External (non-python) dependencies :
    • libmagic
    • asdcplib
    • mediainfo (opt)
    • sox (opt)

User Experiences[edit]

Development Activity[edit]

All development activity is visible on GitHub:

Release Feed[edit]

Below the last 3 release feeds:

2021-04-24 21:12:07
[,2008:Repository/111405937/1.1.2 1.1.2]
by remia
2021-01-12 20:40:30
[,2008:Repository/111405937/1.1.1 1.1.1]
by remia
2020-12-05 14:32:50
[,2008:Repository/111405937/1.1.0 1.1.0]
by remia

Activity Feed[edit]

Below the last 5 commits:

2021-04-24 20:38:22
[,2008:Grit::Commit/6d3d6cbdb1e49c6b572f02af0c6f519e540da37d Bump version]
by remia
2021-04-24 20:38:22
[,2008:Grit::Commit/efe2b10c8dc39a80b1f8e2a7597e5c161e3b83ad Remove python 2.7 from CI]
by remia
2021-04-24 20:09:26
[,2008:Grit::Commit/c2ed6655674fda1f41ca8befb7a9a5df8d85dd32 Fix to make RFC4122_RE case insensitive]
by matmat
2021-04-24 20:09:22
[,2008:Grit::Commit/4b00db4b970332dcff6751a87a593eaf4bffa84e Change style of documentation references.]
by matmat
2021-03-09 20:02:38
[,2008:Grit::Commit/0e7b99a026c84230ffd30a30453860614bbc2d54 Lower check_am_empty_text_fields to info level]
by remia