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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:

2023-03-02 21:59:40
[,2008:Repository/111405937/1.4.0 1.4.0]
by remia
2022-10-17 18:52:30
[,2008:Repository/111405937/1.3.0 1.3.0]
by remia
2022-02-25 13:38:41
[,2008:Repository/111405937/1.2.1 1.2.1]
by remia

Activity Feed[edit]

Below the last 5 commits:

2023-03-02 21:55:06
[,2008:Grit::Commit/d9da6a1f20c44a0788e32c711fad7147bc3b3c26 Bump version]
by remia
2023-03-02 21:54:20
[,2008:Grit::Commit/1789d302f43a73ba8fbb24b974e7d0b874438eb4 Merge pull request #223 from remia/code-maintenance]
by remia
2023-03-02 21:30:30
[,2008:Grit::Commit/5ad74963d2c22922526bd93f3978685eb8a94c5c Update GHA test workflow]
by remia
2023-03-02 21:27:02
[,2008:Grit::Commit/20de13d151af4425c54a63ef5fa0031d35a1a49f Update Readme]
by remia
2023-03-02 21:26:39
[,2008:Grit::Commit/a81d4cc1043155bc0eff7c1c67d65172bea7c263 Fix formatting]
by remia