The meeting was convened by Chair Kaylie Ackerman.
Attendees were Paul Treleaven, Charles Van Winkle, Richard Cabot, Tormod Vaervaegen*, Ultan Henry*, Anthony Kuzub* (* denotes by electronic link).
Minutes of previous meeting in Dublin, Ireland, 2019-3 were approved.
The formal notice on patent policy was read.
Projects assigned to this group but not mentioned here had no action requested or required - see www.aes.org/standards/meetings/project-status.cfm for details.
AES31-4-R Review of AES31-4-2015, AES standard for network and file transport of audio - XML Implementation of Audio Decision Lists
Status: Due for reaffirmation.
The chair mentioned that there is an errant copyright statement which needs to be revised.
There was a change to AES31-3 to correct a missing SMPTE label in an ADL ID field and this document will need a similar correction.
There was considerable discussion about the variations in formats generated by commercial products and how well they conform to the standard. The chair mentioned that his organization was forced to write middleware to correct the divergences from the standard so that all files in their repositories conform completely to the specification.
AES60-R Review of AES60-2011, AES standard for audio metadata - Core audio metadata
Status: Draft is waiting for approval by the co-chair.
The co-chair indicated during the meeting that it was now acceptable to him. The Standards Manager said he would upload the draft to the document repository after the meeting. The revised document will be labeled AES60id when it is published.
AES-X098C Administrative metadata for audio objects - Process history schema
Scope: To collect information on all metadata issues pertaining to digital audio objects and all aspects of the digital documentation of digital audio objects. This scope includes field structures to describe and provide access to the audio content contained in digital files. It includes transfer, preservation and restoration information.
The standard has some overlap with other descriptive metadata standards, and the co-chair T. Vervaegen will together with Egil Eide Ording make a draft to model X098C as an extension of AES 60/EBU core/EBU CCDM. The process have been delayed due to the co-chair leaving his position at NRK. The work will continue.
AES-X155 AES standard for audio metadata - Production recording metadata set (iXML)
Scope: This document specifies a format for communicating file- and project-based production metadata between various stages of production and post production workflow. It may also have utility in other areas. The format, iXML, uses the XML standard for communication of tagged metadata. The XML-formatted metadata may be written to a data chunk inside a Broadcast Wave file, such as AES31-2, or some other suitable file type. iXML standardizes the interchange of production information and provides an extensible framework to add new private or public data as needs develop, while permitting the specification to be expanded in a consistent and compatible manner.
The project will be restarted now that AES60id has been finalized.
AES-X224 Best Practices for the Management of Embedded Metadata in Audio Files
Scope: To create a guide for manufacturers of audio hardware, software and computer platforms describing best practices for the management of metadata embedded in audio files.
This was originated by Chris Lacinik. The group felt that some other organizations may be able to help, including the TC on Forensics. The chair volunteered to contact Doug Lacey to see if he would be in a position to assist. Charles Van Winkle volunteered to upload some relevant files to the document repository.
No further liaisons to discuss.
No new projects.
No new business
The next meeting will be scheduled in conjunction with the AES 148th Convention, to be held in May 2020 in Vienna, Austria.