Overview
ISO/IEC 23000-7:2008/Amd 1:2009 is an international standard developed by ISO and IEC, focusing on multimedia application formats within the MPEG-A suite. This amendment specifically addresses the Open Access Application Format by defining detailed conformance requirements and by providing reference software to support the creation and consumption of open access files.
The standard ensures interoperability for multimedia content packaging and distribution using open, standardized file formats. It enables creators, service providers, and consumers to use reference implementations and demonstrates compliant file creation, packaging, and rendering. This supports efficient authoring, distribution, and playback of multimedia content through open access, promoting accessibility and standardization across platforms.
Key Topics
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Conformance Specifications
The amendment defines how software and files should conform to the open access application format. Conformance ensures consistent interpretation and functionality across implementations.
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Reference Software
Reference software is provided for both the creation and consumption of open access files. This Java-based application supports packaging arbitrary content, adding metadata, license information, and extracting or viewing packaged content.
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File and Application Conformance
- File Conformance: Files must be readable by conformant implementations and follow the prescribed file structure.
- Player Application Conformance: Applications must correctly parse and display the XML-based item declarations.
- Creator Application Conformance: Authoring tools must generate files conforming to the defined format and structure.
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Reference Software Architecture
The software is sensibly modular, including:
- Graphical User Interface (GUI) for user interaction
- Data Model managing both content and user/application preferences
- File Manager for handling file operations (create, parse, save, resource handling)
- Model Manager for XML processing and metadata manipulation
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Functional Features
- Content Creation: Add items, metadata, assign licenses, create relationships, and release standard-compliant files.
- Content Consumption: View, copy, extract content, validate licenses, handle event reports, and manage rights expressions.
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Java-Based Implementation
The reference software requires Java 1.5 or higher and uses standard Java libraries (e.g., JAXB, JAF, Bouncy Castle Crypto APIs, JavaMail, and XML Digital Signature).
Applications
The open access application format specified by this standard supports key use cases across the multimedia ecosystem:
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Multimedia Content Packaging
Enables publishers and creators to distribute complex multimedia packages comprising documents, images, audio, video, and metadata, maintaining provenance and licensing.
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Digital Libraries and Archives
Ensures long-term accessibility and interoperability for digital assets stored in open, standard formats.
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Education and E-Learning
Facilitates the packaging and sharing of multimedia educational content, making it easier to distribute interactive learning materials while managing rights and licenses.
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Interoperable Media Playback
Provides consistent user experiences across different software and platforms by ensuring both files and applications meet the defined conformance.
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Reference Implementation for Developers
Developers can use the reference software as a basis to create or enhance their own applications, ensuring compliance and speeding up the development process.
Related Standards
- ISO/IEC 23000-series (MPEG-A): Defines various multimedia application formats to enable interoperability.
- ISO/IEC 21000 (MPEG-21): Underlying file format and framework for digital item management and packaging.
- ISO/IEC JTC 1/SC 29: Subcommittee responsible for coding of audio, picture, multimedia, and hypermedia information.
By implementing ISO/IEC 23000-7:2008/Amd 1:2009, organizations benefit from reliable multimedia content packaging, open access distribution, and improved compatibility with other MPEG-A and MPEG-21 standards. This ensures efficient multimedia workflows and future-proof access to digital assets.