1、 Reference numberISO/IEC 14496-20:2008/Amd.1:2009(E)ISO/IEC 2009 INTERNATIONAL STANDARD ISO/IEC14496-20Second edition2008-12-01AMENDMENT 12009-04-01Information technology Coding of audio-visual objects Part 20:Lightweight Application Scene Representation(LASeR)and Simple Aggregation Format(SAF)AMEND
2、MENT 1:Extensions to support SVGT1.2 Technologies de linformation Codage des objets audiovisuels Partie 20:Reprsentation de scne dapplication allge(LASeR)et format dagrgation simple (SAF)AMENDEMENT 1:Extensions pour soutien de SVGT1.2 ISO/IEC 14496-20:2008/Amd.1:2009(E)PDF disclaimer This PDF file m
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7、quester.ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel.+41 22 749 01 11 Fax +41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO/IEC 2009 All rights reserved ISO/IEC 14496-20:2008/Amd.1:2009(E)ISO/IEC 2009 All rights reserved iii Foreword ISO(the Inter
8、national Organization for Standardization)and IEC(the International Electrotechnical Commission)form the specialized system for worldwide standardization.National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established
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10、ormation technology,ISO and IEC have established a joint technical committee,ISO/IEC JTC 1.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives,Part 2.The main task of the joint technical committee is to prepare International Standards.Draft International
11、Standards adopted by the joint technical committee are circulated to national bodies for voting.Publication as an International Standard requires approval by at least 75%of the national bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the
12、subject of patent rights.ISO and IEC shall not be held responsible for identifying any or all such patent rights.Amendment 1 to ISO/IEC 14496-20:2006 was prepared by Joint Technical Committee ISO/IEC JTC 1,Information technology,Subcommittee SC 29,Coding of audio,picture,multimedia and hypermedia in
13、formation.ISO/IEC 14496-20:2008/Amd.1:2009(E)ISO/IEC 2009 All rights reserved 1 Information technology Coding of audio-visual objects Part 20:Lightweight Application Scene Representation(LASeR)and Simple Aggregation Format(SAF)AMENDMENT 1:Extensions to support SVGT1.2 In Clause 2,add the following r
14、eference:W3C SVGT12,Scalable Vector Graphics(SVG)Tiny 1.2 Specification Recommendation,http:/www.w3.org/TR/SVGMobile12/Throughout the document,substitute references to 2 by references to W3C SVGT12 In Table 3,add these lines:“screenOrientationLandscape”urn:mpeg:mpeg4:laser:2005 The screen orientatio
15、n has changed to typical“landscape”orientation Note screenOrientationLandscape is sent either with screenOrientation0 or screenOrientation180 No No“screenOrientationPortrait”urn:mpeg:mpeg4:laser:2005 The screen orientation has changed to typical“portrait”orientation Note screenOrientationPortrait is
16、 sent either with screenOrientation90 or screenOrientation270 No No After 6.5.6.1,add the following subclause:6.5.6.2 ScreenOrientationEvent interface ScreenOrientationEvent:Event readonly attribute unsigned long screenWidth;readonly attribute unsigned long screenHeight;readonly attribute unsigned long screenAngle;No defined constants.Attributes:screenWidth-contains the new screen display or viewport width screenHeight-contains the new screen display or viewport height screenAngle-documents the
