互联网视频编码标准IVC.pdfVIP

第十讲：互联网视频编码标准 王荣刚 北京大学深圳研究生院数字媒体研究中 2015年11月23 日 内容提要  背景介绍  VPx  IVC  大作业 2 背景介绍  视频占互联网流量的90%  互联网的商业模式：  软件免费：推动用户数量增长  收入以广告为主  传统标准的专利池付费模式在互联网领域面临 新问题：  MPEG-2只对设备收费，收不到互联网运营商的钱  软件免费：很难按用户数收费  H.264的互联网收费政策：  对于付费视频服务：节目/用户收费  互联网电视：按频道收费  HEVC收费政策：  MPEGLA:类似H.264 3  HEVC-Advance: 运营商营业收入0.5% 免专利费标准  MPEG-1, MPEG-2专利基本过期，但压缩性能不够  微软推动VC-1免费的努力以失败告终  Google推动VP8, VP9  The HTML5 specification introduced the video element for the purpose of playing videos  Have good compression, good image quality, and low decode processor use.  Be royalty-free.  In addition to software decoders, a hardware video decoder should exist for the format, as many embedded processors do not have the performance to decode video.  Alliance for Open Media:  Sept. 1, 2015 – Seven leading Internet companies today announced formation of the Alliance for Open Media – an open-source project that will develop next-generation media formats, codecs and technologies in the public interest. The Alliance’s founding members are Amazon, Cisco, Google, Intel Corporation, Microsoft, Mozilla and Netflix.  MPEG从2009年开始考虑做面向互联网的免费标准IVC 4 Introduction  In order to address the diversified needs of the Internet, MPEG issued the Call for Proposals (CfP) for internet video coding in July, 2011.  It is anticipated that any patent declaration associated with the Baseline Profile of this standard will indicate that the patent owner is prepared to grant a free of charge lice