AS-11: Media Contribution File Formats
The AMWA AS-11 family of Specifications define constrained media file formats (based on MXF) for the delivery of finished media assets to a broadcaster or publisher. Each Specification is developed for a particular business purpose.
The AS-11 Overview GitHub project is used to host additional resources for all the AS-11 Specifications including an issue tracker, sample files, tools, and more information.
History of AS-11 development
The AS-11 UK DPP HD & SD Specifications are well established for the delivery of finished programs to media companies within the UK.
Traditionally, AMWA Specifications have been text-based. While being easily human-readable, they do not support automated processes or allow the Specification to be quickly and efficiently adapted for new users. This has led to the development of Rules-based, machine-readable Specifications. Building blocks (“rules”) for all the video, audio, metadata, etc aspects are combined into the final Specification. Human-readable descriptions can be generated automatically from the machine versions, and these building blocks can be re-used in other Specifications.
This new approach has proven especially valuable as the AS-11 family of Specifications has been extended to accommodate the needs of new international users. New specifications have been created to:
Meet the requirements of broadcasters in the Nordic countries, Australia and New Zealand, as well as broadcasters represented by the North American Broadcasters Association (NABA) and the DPP
Add support for UHD and HDR content
Cater for delivery of short-form content in addition to full-length programs (such as commercials, promotions, and music videos)