Overview - ISO/IEC 14543-5-21:2012 (AV profile)
ISO/IEC 14543-5-21:2012 is an international standard in the Home Electronic System (HES) architecture series that defines an AV application profile for intelligent grouping and resource sharing in HES Class 2 and Class 3 environments. The standard specifies the media data stream service profile, device interaction flows, request/response message formats used in device interaction, and the description format for services provided by devices. It applies to computers, household appliances and communication devices that implement media data streaming over wired or wireless networks.
Key topics and technical requirements
- Device interaction models: Four interaction models are defined - single server/client, multiple servers/single client, single server/multiple clients, and multiple servers/multiple clients - to support diverse AV use cases.
- Core components: Definitions and responsibilities for media servers, media clients, and media device groups (including Content Index Service (CIS) groups and Audio-Video multicast groups).
- Service profiles and protocols:
- Media data stream service profile for streaming behavior.
- BCM TCP service and IGRS SOAP service for control and signalling.
- Message formats for service invocation requests/responses, content directory updates, and service attribute notifications.
- Interaction flows: Detailed sequences for device grouping, dynamic service invocation, AV playback (server-initiated and client-initiated transport), multicast playback, content management, collaborative content analysis and personalization.
- Session management: Session setup, conditions, processes and termination rules are standardized to ensure interoperability.
- Modularity and expansion: Guidance on modular expansion of media servers and clients to support additional functions.
Practical applications
- Ensures interoperability among home AV devices (smart TVs, set-top boxes, NAS, smart appliances) that stream media over LAN/Wi‑Fi.
- Enables intelligent grouping (synchronized playback and resource sharing) for multi-room audio/video and multicast scenarios.
- Supports content indexing, collaborative content analysis and personalized recommendations across devices.
- Useful for designing firmware, middleware, networked appliance software, and home automation platforms that require standardized AV control and messaging.
Who should use this standard
- Device manufacturers (media servers/clients, smart appliances)
- Firmware and middleware developers for home entertainment and IoT devices
- System integrators and platform architects working on multi-room AV systems
- Test labs and interoperability certification bodies
Related standards
- Other parts of the ISO/IEC 14543 HES architecture series (Part 5 family) and ISO/IEC JTC 1 publications governing information technology interconnection standards.
Open preview (PDF)Information technology — Home electronic system (HES) architecture — Part 5-21: Intelligent grouping and resource sharing for HES Class 2 and Class 3 — Application profile — AV profile
