1、 Reference numberISO/IEC 14496-2:2004/Amd.2:2005(E)ISO/IEC 2005INTERNATIONAL STANDARD ISO/IEC14496-2Third edition2004-06-01AMENDMENT 22005-10-01Information technology Coding of audio-visual objects Part 2: Visual AMENDMENT 2: New levels for simple profile Technologies de linformation Codage des obje
2、ts audiovisuels Partie 2: Codage visuel AMENDEMENT 2: Nouveaux niveaux pour profil simple Amendment 2:2006 toNational Standard of CanadaCAN/CSA-ISO/IEC 14496-2:05Amendment 2:2005 to Inte rnational S tandard ISO/IEC 1 4496-2:2004 has been adopted withoutmodification (IDT) as Amendment 2:2006 to CAN/C
3、SA-ISO/IEC 14496-2:05. This Amendment was reviewedby the CSA Technical Committee on Information Technology (TCIT) under the jurisdiction of the StrategicSteering Committee on Information Technology and deemed acceptable for use in Canada.December 2006ISO/IEC 14496-2:2004/Amd.2:2005(E) PDF disclaimer
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8、e requester. 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 ii ISO/IEC 2005 All rights reservedISO/IEC 14496-2:2004/Amd.2:2005(E) ISO/IEC 2005 All rights reserved iiiForeword ISO (the International Organizat
9、ion 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 by the respect
10、ive organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information
11、 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 St
12、andards 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 th
13、e subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. Amendment 2 to ISO/IEC 14496-2:2004 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hyper
14、media information. This amendment specifies two new Levels for the ISO/IEC 14496-2 Simple Profile: Level 4a and Level 5. These levels define increased capabilities of VMV size, VCV buffer size, VCV decoder rate, VBV buffer size, video packet length, and bit rate for the Simple Profile. In particular
15、, Level 4a and Level 5 provide support for typical visual session sizes of 640x480 (often known as “VGA resolution”) and 720x576 (often known as “European SDTV resolution”), respectively, in rectangular-VOP luminance sample units. ISO/IEC 14496-2:2004/Amd.2:2005(E) ISO/IEC 2005 All rights reserved 1
16、Information technology Coding of audio-visual objects Part 2: Visual AMENDMENT 2: New levels for simple profile In Table G-1, after the line, Simple Profile/Level 3 00000011 add the following lines: Simple Profile/Level 4a 00000100 Simple Profile/Level 5 00000101 In Table G-1, replace: Reserved 0000
17、0100 00000111 with: Reserved 00000110 00000111 In Annex N, add the following rows to Table N-1 (above the row for Simple Profile/Level3): Simple L5 720 576 4 4 Simple 1 3240 1620 40500 N.A.112 112 16384 N.A. N.A. 8000 N.A. Simple L4a 640 480 4 4 Simple 1 2400 1200 36000 N.A.80 80 16384 N.A. N.A. 400
18、0 N.A. ISO/IEC 14496-2:2004/Amd.2:2005(E) ICS 35.040 ISO/IEC 2005 All rights reserved Copyright Notice This Am endment t o t he Int ernational St andard cont ains i nformation copyright pr otected b y the International Organization for Standardization (ISO) and the International Electrotechnical Com
19、mission (IEC). Except as permitted under the laws of Canada, no extract of this Amendment to the International Standard may be reproduced, stored in any retrieval system, or transmitted in any form or by any means, electronic, photocopying, recording, or otherwise, without prior permission from the
20、Stan dards Council of Canada (SCC). Requests for permission to reproduce this Amendment to the International Standard or parts thereof should be addressed to Manager, Technical Document Centre Standards Council of Canada 270 Albert Street, Suite 200 Ottawa, Ontario K1P 6N7 The Canadian adoption of t
21、his Amendment to the International Standard contains information copyright protected by the Canadian Standards Association. All rights reserved. No part of this adopted Amendment may be reproduced in any form whatsoever without the prior permission of the publisher. ISO/IEC material is reprinted wit
22、h permission. Requests for permission to reproduce this adopted Amendment or parts thereof should be addressed to Director, Information Products Canadian Standards Association 5060 Spectrum Way, Suite 100 Mississauga, Ontario L4W 5N6 Copyright violators will be prosecuted to the full extent of the law. PRINTEDIN CANADAIMPRIMEAU CANADA
