JCT-VC

JCT-VC is a joint collaboration between the International Telecommunication Union (ITU) Video Coding Experts Group (VCEG) and the ISO/IEC Moving Picture Experts Group (MPEG) that aims to develop a new video coding standard, known as High Efficiency Video Coding (HEVC) or H.265. The JCT-VC was established in 2010 by the ITU-T and ISO/IEC to create a next-generation video coding standard that would provide twice the compression efficiency of the existing H.264/MPEG-4 AVC standard, which was developed by MPEG and VCEG. This collaboration involved experts from various organizations, including Apple, Microsoft, Google, and Samsung, as well as renowned researchers from institutions like Stanford University and Massachusetts Institute of Technology. The development of HEVC was also influenced by the work of other organizations, such as the Society of Motion Picture and Television Engineers (SMPTE) and the Digital Video Broadcasting (DVB) project.

Introduction

The JCT-VC was formed to address the growing need for a more efficient video coding standard that could support the increasing demand for high-definition (HD) and ultra-high-definition (UHD) video content, as well as the rising popularity of online video streaming services like Netflix, YouTube, and Amazon Prime Video. The new standard was designed to provide better compression efficiency, improved video quality, and increased flexibility, making it suitable for a wide range of applications, including broadcasting, video conferencing, and gaming. The development of HEVC was also driven by the need to support emerging technologies like 3D video, virtual reality (VR), and augmented reality (AR), which require more advanced video coding capabilities. Additionally, the JCT-VC collaborated with other organizations, such as the European Broadcasting Union (EBU) and the Society of Cable Telecommunications Engineers (SCTE), to ensure that the new standard would meet the needs of the broadcasting and cable industries.

History

The JCT-VC was established in 2010, and the first meeting was held in Dresden, Germany, in April 2010. The committee was co-chaired by Gary Sullivan from Microsoft and Jens-Rainer Ohm from RWTH Aachen University. The development of HEVC involved a collaborative effort between experts from various organizations, including Intel, IBM, and Cisco Systems, as well as researchers from institutions like University of California, Berkeley and Carnegie Mellon University. The JCT-VC held regular meetings, known as "JCT-VC meetings," which were attended by experts from around the world, including representatives from China, Japan, and South Korea. The committee also collaborated with other organizations, such as the Institute of Electrical and Electronics Engineers (IEEE) and the Internet Engineering Task Force (IETF), to ensure that the new standard would be compatible with existing technologies and protocols.

Technical Overview

The HEVC standard developed by the JCT-VC is based on a hybrid video coding approach, which combines predictive coding, transform coding, and entropy coding techniques. The standard uses a hierarchical block structure, known as the "coding tree unit" (CTU), which allows for more efficient coding of video content. HEVC also introduces several new tools, such as the "sample adaptive offset" (SAO) and the "adaptive loop filter" (ALF), which improve the compression efficiency and video quality. The standard supports a wide range of resolutions, from QCIF to 8K, and frame rates, from 24fps to 120fps. The development of HEVC was influenced by the work of other researchers, such as Karlheinz Brandenburg and Harald Popp, who made significant contributions to the field of audio and video coding. Additionally, the JCT-VC collaborated with organizations like the Audio Engineering Society (AES) and the Society of Motion Picture and Television Engineers (SMPTE) to ensure that the new standard would meet the needs of the audio and video industries.

Standardization

The HEVC standard was finalized in 2013 and was published as ITU-T Recommendation H.265 and ISO/IEC 23008-2. The standardization process involved a thorough evaluation of the proposed standard, including simulations, testing, and validation. The JCT-VC worked closely with other standardization bodies, such as the 3rd Generation Partnership Project (3GPP) and the Digital Video Broadcasting (DVB) project, to ensure that the new standard would be compatible with existing technologies and protocols. The standard has been widely adopted by the industry, with many companies, including Apple, Google, and Samsung, implementing HEVC in their products and services. The JCT-VC also collaborated with organizations like the World Wide Web Consortium (W3C) and the Internet Society (ISOC) to ensure that the new standard would be compatible with emerging technologies like HTML5 and WebRTC.

Applications

The HEVC standard has a wide range of applications, including broadcasting, video conferencing, gaming, and online video streaming. The standard is used in various products and services, such as smartphones, tablets, smart TVs, and set-top boxes. HEVC is also used in emerging applications, such as virtual reality (VR) and augmented reality (AR), which require more advanced video coding capabilities. The JCT-VC collaborated with organizations like the Virtual Reality Industry Forum (VRIF) and the Augmented Reality for Enterprise Alliance (AREA) to ensure that the new standard would meet the needs of these emerging industries. Additionally, the JCT-VC worked with companies like Facebook, Amazon, and Microsoft to develop new applications and services that take advantage of the advanced video coding capabilities of HEVC. The standard has also been adopted by organizations like the National Aeronautics and Space Administration (NASA) and the European Space Agency (ESA) for use in various applications, including space exploration and earth observation.

Category:Video coding