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H.264 MPEG-4 Codec

Adam Dille CS525 – Spring 2010. H.264 MPEG-4 Codec. MPEG-4. Collection of compression standards Currently 27 standards or “Parts” in total Most widely known: MPEG-4 Part 2 ( DivX , Xvid , Nero Digital, QT6) MPEG-4 Part 10 (H.264). H.264. Standardization completed in May 2003

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H.264 MPEG-4 Codec

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  1. Adam Dille CS525 – Spring 2010 H.264 MPEG-4 Codec

  2. MPEG-4 • Collection of compression standards • Currently 27 standards or “Parts” in total • Most widely known: • MPEG-4 Part 2 (DivX, Xvid, Nero Digital, QT6) • MPEG-4 Part 10 (H.264)

  3. H.264 • Standardization completed in May 2003 • Inherits everything that makes MPEG-4 Part 2 so efficient • Extends some Part 2 features • Adds a few new features • Result is up to 50% better compression than Part 2 with similar quality • Makes up 66% of videos currently on the web (as of May 1, 2010)

  4. H.264 Encoder Usage • Blu-ray Disc (One of three mandatory codecs) • YouTube • Vimeo • Flash Video (F4v Format) • iTunes Store • DivXPlus HD • AVCHD (Canon, Hitachi, JVC, Panasonic & Sony High Definition Camcorders) • Point and Shoot HD Videos (MOV format)

  5. H.264 Motion Compensation • Motion macroblock sizes as small as 4x4 • Multiple motion vectors per macroblock • Up to 16 previous frames as reference • Default Quarter-Pixel vector precision • Weighted prediction

  6. Other Features • Individual color plane encoding (useful for parallel encoders) • In-loop deblocking

  7. Licensing • Owned by Denver-based MPEG LA • Owners of patents in the H.264 patent pool: • Free internet video is exempt from royalties until 12/31/2015 (announced 2/2/2010) • Terms updated every 5 years • Apple Inc. • DAEWOO • Dolby Laboratories Licensing Corporation • Electronics and Telecommunications Research Institute • France Télécom, sociétéanonyme • Fraunhofer-GesellschaftzurFoerderungderangewandtenForschunge.V. • Fujitsu Limited • Hitachi, Ltd. • Koninklijke Philips Electronics N.V. • LG Electronics Inc. • Microsoft Corporation • Mitsubishi Electric Corporation • NTT docomo • Nippon Telegraph and Telephone Corporation • Panasonic Corporation • Robert Bosch GmbH GmbH • Samsung Electronics Co., Ltd. • Scientific-Atlanta Vancouver Company • Sedna Patent Services, LLC • Sharp Corporation • Siemens AG • Sony Corporation • Ericsson • The Trustees of Columbia University in the City of New York • Toshiba Corporation • Victor Company of Japan, Limited

  8. My Tests • 50 Second HD clip • 1280 x 720 • 30 frames/sec • 3.41 GB Uncompressed • DivX MPEG-4 Part 2 (DivX Converter) • 24 MB • MainConcept H.264 (Adobe Media Encoder) • 18 MB • 25% compression gain over MPEG-4 Part 2

  9. HTML 5 • HTML5 spec adds <video> tag • Browser developers decide which video formats to support in the tag • H.264 would likely be the choice for default format, but patent concerns prevented it • YouTube and Vimeo launched H.264 HTML5 players • IE9, Chome 3+, Safari 3.1+ support H.264 • Mozilla doesn’t want to pay

  10. Questions ?

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