Gary Joseph Sullivan (born 1960) is an American electrical engineer who led the development of the AVC, HEVC, and VVC video coding standards and created the DirectX Video Acceleration (DXVA) API/DDI video decoding feature of the Microsoft Windows operating system. He was the chairman and a co-founder of the Joint Video Team (JVT) standardization committee that developed the H.264/AVC standard, and he personally edited large portions of it. In January 2010, he became a founding co-chairman of the Joint Collaborative Team on Video Coding (JCT-VC) and an editor for developing the High Efficiency Video Coding (HEVC) standard. In October 2015, he became a founding co-chairman of the Joint Video Experts Team (JVET) that developed the Versatile Video Coding (VVC) standard. He has also led and contributed to a number of other video and image related standardization projects such as extensions of ITU-T H.263 video coding, multiview and 3D video coding for AVC and HEVC, and JPEG XR image coding. He has also published research work on various topics relating to video and image compression. Biography Sullivan was born and raised in Louisville, Kentucky, and attended the Ascension and St. Margaret Mary elementary schools and Trinity High School, graduating in 1978. He received B.S. and M.Eng. degrees in electrical engineering from the University of Louisville J. B. Speed School of Engineering, Kentucky, in 1982 and 1983, respectively. He received Ph.D. and Engineer degrees in electrical engineering from the University of California, Los Angeles, in 1991. Sullivan holds the position of Video and Image Technology Architect at Microsoft Corporation. At Microsoft he also designed and remains lead engineer for the DirectX Video Acceleration (DXVA) API/DDI video decoding feature of the Microsoft Windows operating system platform. His DXVA designs include decoding acceleration schemes for H.261, MPEG-1 Part 2, H.262/MPEG-2 Part 2, H.263, MPEG-4 Part 2, H.264/MPEG-4 Part 10: AVC, Windows Media Video versions 8 and 9, VC-1, Scalable Video Coding, Multiview Video Coding, and HEVC. Prior to joining Microsoft in 1999, he was the manager of communications core research at PictureTel Corporation, the former world leader in videoconferencing communication. He was previously a Howard Hughes Fellow and member of technical staff in the Advanced Systems Division of Hughes Aircraft Company, and a terrain-following radar system software engineer for Texas Instruments. Awards Recognitions and awards for Sullivan and the projects he has led in the standardization community have included the following: 2022 class of