Media Hash List (MHL) Format Improving Data Integrity in Digital Cinematography

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Publisher: SMPTE — White Plains, NY
Doc Type: Conference Paper
Content Type: Original Research
Volume: 2011, No. 1, pp. 1–6
Abstract: In Digital Cinematography complete and correct backup of source media is one of the essential activities of the file-based workflow. In order to verify the completeness and correctness of a backup at any time, this paper proposes a XML-based Media Hash List (MHL) format - containing all the necessary information needed to detect possible errors during file copy and transfer. Such errors include aborted copies, bit errors, or changes in selection and contents of a backup. A MHL file contains a list of files, cryptographic hashes for file verification, and digital signatures for data integrity of the MHL and the media files. An additional, optional section for documentation purposes is specified as well. For a well-documented data workflow with improved integrity and simplified interchange of media files the MHL format is intended to be implemented by software for backup and media management as well as by file-based cameras and recorders.
Publication Date: 2011-10-01
DOI: 10.5594/M001065
Link: https://doi.org/10.5594/M001065
Author(s): Patrick RennerPomfort GmbH
Gregor BaumertCinePostproduction GmbH
Michael HacklARRI Film&TV Services GmbH
Jan FröhlichCinePostproduction GmbH
Sabine Waxiwax - Ingenieurbüro
Peter HinterseerARRI Film&TV Services GmbH
Andreas MinuthCinePostproduction GmbH
Alexander SahmPomfort GmbH
Keyword(s): File-Based Workflow
Copyright: © 2011 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

[1] RFC 1321, „The MD5 Message-Digest Algorithm” , Network Working Group , April 1992 EXTERNAL
[2] RFC3174, „US Secure Hash Algorithm 1 (SHA1)” , The Internet Society , 2001 EXTERNAL
[3] XMLDSIG-CORE, „XML Signature Syntax and Processing (Second Edition)” , W3C Recommendation, June 2008 EXTERNAL

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Patrick Renner, Gregor Baumert, Michael Hackl, Jan Fröhlich, Sabine Wax, Peter Hinterseer, Andreas Minuth, and Alexander Sahm; Media Hash List (MHL) Format Improving Data Integrity in Digital Cinematography, SMPTE Meetings and Conferences ( October 2011); SMPTE, 2011. Available at https://doi.org/10.5594/M001065

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Patrick Renner, Gregor Baumert, Michael Hackl, Jan Fröhlich, Sabine Wax, Peter Hinterseer, Andreas Minuth, and Alexander Sahm; Media Hash List (MHL) Format Improving Data Integrity in Digital Cinematography, SMPTE Meetings and Conferences ( October 2011); SMPTE, 2011. Available at https://doi.org/10.5594/M001065

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<span class="citation">Patrick Renner, Gregor Baumert, Michael Hackl, Jan Fröhlich, Sabine Wax, Peter Hinterseer, Andreas Minuth, and Alexander Sahm; <cite>Media Hash List (MHL) Format Improving Data Integrity in Digital Cinematography</cite>, SMPTE Meetings and Conferences ( October 2011); SMPTE, 2011. Available at <a href="https://doi.org/10.5594/M001065" target="_blank" rel="noopener">https://doi.org/10.5594/M001065</a></span>

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Patrick Renner, Gregor Baumert, Michael Hackl, Jan Fröhlich, Sabine Wax, Peter Hinterseer, Andreas Minuth, and Alexander Sahm; <cite id="bib-10-5594-m001065">Media Hash List (MHL) Format Improving Data Integrity in Digital Cinematography</cite>, SMPTE Meetings and Conferences ( October 2011); SMPTE, 2011
<span class="doi">10.5594/M001065</span>
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