This repository is the home of the ASC Media Hash List (ASC MHL) specification and related documents. The specification is developed by the Advanced Data Management Subcommittee of the ASC Motion Imaging Technology Council (MITC) at the American Society of Cinematographers (ASC).
Ensuring file integrity when backing up and verifying files during production and post-production is of utmost importance. The ASC MHL is used to create a chain of custody by tracking each and every copy made between the media’s initial download on set, all the way through to final archival.
The ASC MHL uses common checksum methods for hashing files and folders, specifies what information is gathered, where the checksum is placed, and documents these hashes together with essential file metadata in an XML format.
- ASC MHL Specification document:
./Specification - ASC MHL Implementation Guidelines document:
./ImplementationGuidelines
- ASC MHL Reference Implementation: https://github.com/ascmitc/mhl
- ASC MHL Schema Definition:
./xsdfolder in the https://github.com/ascmitc/mhl repository
In case you are looking for the original ("old") specification of MHL, please take a look at https://mediahashlist.org.