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SA4 - Multimedia Codecs, Systems and Services

<UPDATED 2021-08-25> Dr. Jaeyeon Song (Samsung Electronics Co., Ltd. / TTA) elected new Vice Chair of SA WG4.

<<NEW 2021-04-09>> Mr. Frederic Gabin - Dolby Laboratories Inc. (ETSI) was re-elected Chairman by acclamation and Mr. Gilles Teniou - Tencent (CCSA) was re-elected Vice Chairman by acclamation.

Within the 3GPP Technical Specification Group Service and System Aspects (SA), the main objectives of the 3GPP TSG SA WG4 (SA4) are the specifications of codecs for speech, audio, video, graphics and other media types related to emerging services such as extended realities (XR) and gaming, as well as the system and delivery aspects of such contents. These objectives includes defining content formats and delivery protocols for unicast, multicast and broadcast streaming, cloud and edge computing architectures, media APIs, media handling in multimedia telephony, terminal acoustics requirements and performance testing, end-to-end service performance, objective and subjective quality testing, quality of experience (QoE) metrics, definition of traffic characteristics for media services, reporting for all services involving media aspects, and the use of artificial intelligence and machine learning models for multimedia.

SA WG4 is currently responsible for the XR-based services and traffic characteristics, Next Generation Video for 5G, Media Distribution over 5G unicast/multicast and broadcast, Media Cloud and Edge Processing in 5GS, Glass-based Augmented Reality, VR conferencing, Immersive Voice and Audio Services and Extension for headset interface tests of UE.

Terms of reference 

The latest terms of reference were revised at TSG SA#90 in document SP-200929

Useful links and information

About SA WG4 List of elected officials
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  Work items
Meetings Next meeting information & previous meeting reports and documents
  Liaisons Statements
  Full SA WG4 meeting calendar
General info Email exploder lists
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SA Working groups and Ad Hoc groups 
TSG SA Plenary  
TSG SA WG1 Services
TSG SA WG2 System Architecture and Services
TSG SA WG3 Security and Privacy
TSG SA WG4 Multimedia Codecs, Systems and Services
TSG SA WG5 Management, Orchestration and Charging
TSG SA WG6 Application Enablement and Critical Communication Applications
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