Patrick Renner is head of R&D and Managing Director of Pomfort GmbH, a software company specialized in media management software for digital images. He gained experience in a broad range of post production workflows during his work in a large post production facility with responsibility for IT infrastructure and in-house software development. During freelance work for companies in the area of film and video he was involved in software projects in a broad range of topics comprising color management, video transcoding and packaging, digital film cameras, media management and user interaction design for media systems. He worked as a research assistant at the Chair for Applied Software Engineering at the Technische Universität München and holds a university degree in Computer Science (Dipl.-Inf. Univ.).
Sign up for the beta now and get a sneek peek of the Media Hash List command line tools.
The Media Hash List initiative aims to make MHL an open and widely accepted standard. Therefore, we need your help! Put the MHL beta through its paces and give us your feedback so we can make MHL accessible for more and more people out there.
We’re looking forward to hearing from you!
We’ve recently been busy working on an implementation of the proposed Media Hash List (MHL) standard.
A first beta version is nearing it’s completion and will shortly be available to you. We’ll set up a registration form next week, allowing you to get an insight into the current development at Pomfort and give us feedback about the MHL command line tools.
“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 an XML-based Media Hash List (MHL) format—containing all the necessary information needed to detect possible errors during file copy and transfer. Presented by Patrick Renner (Pomfort GmbH, Germany) at the 2011 SMPTE Annual Tech Conference and Expo Oct 25-28, Hollywood, CA”
Our abstract with the title “Media Hash List (MHL) format improving data integrity in Digital Cinematography” has been accepted for the 2011 SMPTE Annual Technical Conference & Exhibition.
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 an 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.
digital cinematography; cryptographic hashes; XML signature; data management; backup; information management; trust; data integrity; file-based workflow; proposal