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The AMWA AS-11 family of Specifications define constrained media file formats for the delivery of finished media assets to a broadcaster or publisher. Each Specification is developed for a particular business purpose, and in addition a new naming convention has been introduced to identify these different versions, (AS-11 X), as designated below.

AS-11 is growing and maturing

UHD program contribution for the DPP

AS-11 HD & SD DPP is well established for the delivery of finished programs to media companies within the UK. But the future move to UHD has led to a new set of requirements from the Digital Production Partnership. These are described in a new AMWA specification called AS-11 X1.

AS-11 International Versions

Use of the AS-11 specification simplifies the process of creating and moving program material between post houses and playout companies – and the benefits are being recognized around the world. New specifications for the delivery of finished programs have been created for use in the Nordic countries, Australia and New Zealand, building on the success of the “AS-11 DPP” specifications for the UK. These new Specifications are closely aligned and based on the new rules based format.

These are:

AS-11 X2 (HD Intra) initially to be adopted in Australia and New Zealand

AS-11 X3 (HD Long GOP at European frame rates) initially to be adopted in the Nordic Countries.

AS-11 X4 (HD Long GOP at U.S. frame rates) initially to be adopted in the Nordic Countries.

Rules based specifications

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, or rules for each of the video, audio (etc.) elements are combined into the final specification. Human-readable descriptions can automatically be generated from the machine versions, and these blocks can be re-used in other specifications. This new approach has proven especially valuable as AS-11 has been extended to accommodate the needs of new international users.

A new approach is also being taken to the publication of AS-11 Specifications. Specifications are now being published on GitHub as "code" and move through different "maturity levels" from "Work In Progress", to "Proposed Specification" to "Specification".

Read an introduction to this new rules based approach to AMWA Specifications

Download an overview of the technical design of the AS-11 Specifications – includes a summary table of Specification properties

Refer to this introduction to this new rules based approach to AMWA Specifications for details of the different Specification "maturity levels" used in the table below (alongside the Publication Status).

AMWA ID	Name	Description	Publication Status / Maturity Level
AS-11 UK DPP SD	MXF Program Contribution – UK DPP SD	Delivery of finished SD programs to Digital Production Partnership (DPP) broadcasters. Business Requirements Owner: Andy Quested for UK DPP, [email protected]	Published (existing Specification)
AS-11 UK DPP HD	MXF Program Contribution – UK DPP HD	Delivery of finished SD programs to Digital Production Partnership (DPP) broadcasters. Business Requirements Owner: Andy Quested for UK DPP, [email protected]	Published (existing Specification)
AS-11 X1	MXF Program Contribution – DPP UHD	Delivery of finished UHD programs to Digital Production Partnership (DPP) broadcasters. Business Requirements Owner: Andy Quested for UK DPP, [email protected]	Published as 'Work in Progress'
AS-11 X2	MXF Program Contribution – HD Intra	Delivery of finished HD AVC Intra programs to a broadcaster or publisher. Business Requirements Owner: Kevin Burrows, [email protected]	Published as 'Work in Progress'
AS-11 X3	MXF Program Contribution – HD Long GOP (25p, 50p)	Delivery of finished HD AVC Long GOP programs to a broadcaster or publisher. Business Requirements Owner: Kevin Burrows, [email protected]	Published as 'Work in Progress'
AS-11 X4	MXF Program Contribution – HD Long GOP (23.98p, 59.94p)	Delivery of finished HD AVC Long GOP programs to a broadcaster or publisher. Business Requirements Owner: Kevin Burrows, [email protected]	Published as 'Work in Progress'
AS-11 X7	MXF Program Contribution – SD	Delivery of finished SD D10 programs to a broadcaster or publisher. Business Requirements Owner: Kevin Burrows, [email protected]	Published as 'Work in Progress'

View information on the development of AS-11