The Video Coding Experts Group or Visual Coding Experts Group (VCEG) is the informal name of Question 6 (Visual coding) of Working Party 3 (Media coding) of Study Group 16 (Multimedia coding, systems and applications) of the ITU-T. Its abbreviated title is ITU-T Q.6/SG 16. It is responsible for standardization of the "H.26x" line of video coding standards, the "T.8xx" line of image coding standards, and related technologies.
As of late 2006, VCEG has also become responsible for the ITU-T work on still image coding standards including JPEG (ITU-T T.80, T.81, T.83, T.84, and T.86), JBIG-1 (ITU-T T.80, T.82 and T.85), JBIG-2 (ITU-T T.88 and T.89), JPEG-LS (ITU-T T.87 and T.870), JPEG 2000 (ITU-T T.800 through T.812), the JPEG-like ITU-T T.851, and JPEG XR (ITU-T T.832, T.833, T.834, T.835, and T.Sup2). VCEG works on most of these standards jointly with ISO/IEC JTC 1/SC 29/WG 1 (Joint Photographic Experts Group/Joint Bi-level Image experts Group).
Study Group 16 is responsible for studies relating to multimedia service capabilities, and application capabilities (including those supported for NGN). This encompasses multimedia terminals, systems (e.g., network signal processing equipment, multipoint conference units, gateways, gatekeepers, modems, and facsimile), protocols and signal processing (media coding).
The goal of Question 6 is to produce Recommendations (international standards) for video coding and image coding methods appropriate for conversational (e.g. videoconferencing and video telephony) and non-conversational (e.g., streaming, broadcast, file download, media storage/playback, or digital cinema) audio/visual services. This Question focuses on the maintenance and extension of existing video coding Recommendations, and laying the ground for new Recommendations using advanced techniques to significantly improve the trade-offs between bit rate, quality, delay, and algorithm complexity. Video coding standards will be developed with sufficient flexibility to accommodate a diverse number of transport types (Internet, LAN, Mobile, ISDN, GSTN, H.222.0, NGN, etc.).
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