1. Adam Dille CS525 – Spring 2010

2.  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.  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.  Blu-ray Disc (One of three mandatory codecs)  YouTube  Vimeo  Flash Video (F4v Format)  iTunes Store  DivX Plus HD  AVCHD (Canon, Hitachi, JVC, Panasonic & Sony High Definition Camcorders)  Point and Shoot HD Videos (MOV format)

5.  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.  Individual color plane encoding (useful for parallel encoders)  In-loop deblocking

7.  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, société anonyme Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.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.  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.  HTML5 spec adds 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

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