CAN CSA-ISO IEC 14496-4E-2006 Information technology - Coding of audio-visual objects - Part 4 Conformance testing AMENDMENT 5 Conformance extensions for error-resilient simple sca.pdf
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1、 Reference numberISO/IEC 14496-4:2004/Amd.5:2005(E)ISO/IEC 2005Information technology Coding of audio-visual objects Part 4: Conformance testing AMENDMENT 5: Conformance extensions for error-resilient simple scalable profile Technologies de linformation Codage des objets audiovisuels Partie 4: Essai
2、 de conformit AMENDEMENT 5: Extensions de conformit pour profil error-resilient simple scalable International Organization for Standardization (ISO), 2005. All rights reserved. International Electrotechnical Commission (IEC), 2005. All rights reserved. NOT FOR RESALE. Amendment 5:2006 toNational Sta
3、ndard of CanadaCAN/CSA-ISO/IEC 14496-4:06Amendment 5:2005 to International Standard ISO/IEC 14496-4:2004 has been adopted withoutmodification (IDT) as Amendment 5:2006 to CAN/CSA-ISO/IEC 14496-4:06. This Amendment was reviewedby the CSA Technical Committee on Information Technology (TCIT) under the
4、jurisdiction of the StrategicSteering Committee on Information Technology and deemed acceptable for use in Canada.December 2006(reaffirmed 2011)ISO/IEC 14496-4:2004/Amd.5:2005(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be
5、 printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts
6、no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the fi
7、le is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO/IEC 2005 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any
8、form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 g120 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22
9、 749 09 47 E-mail copyrightiso.org Web www.iso.org ii ISO/IEC 2005 All rights reservedAmendment 5:2006 toCAN/CSA-ISO/IEC 14496-4:06ISO/IEC 14496-4:2004/Amd.5:2005(E) ISO/IEC 2005 All rights reserved iiiForeword ISO (the International Organization for Standardization) and IEC (the International Elect
10、rotechnical 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 respective organization to deal with particular fields of techni
11、cal 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 technology, ISO and IEC have established a joint technic
12、al 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 Standards adopted by the joint technical committee are circ
13、ulated 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 subject of patent rights. ISO and IEC shall not be held
14、 responsible for identifying any or all such patent rights. Amendment 5 to ISO/IEC 14496-4:2004 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information. Amendment 5:2006 toCAN/CSA-ISO/IEC 144
15、96-4:06ISO/IEC 14496-4:2004/Amd.5:2005(E) iv ISO/IEC 2005 All rights reservedIntroduction In ISO/IEC 14496-2:2004, the bitstream syntax of the Simple Scalable Profile does not allow the use of the error resilience tools. As the enhancement layer can only be decoded if it is received error-free this
16、limits the use of scalable video to error-free communication environments. This would exclude mobile communications, a significant future market for MPEG-4 SSP. Scalable video can be quite useful in many other applications. For instance, matching different or varying network bandwidths, video multic
17、ast to heterogeneous end systems and more importantly, providing different subjective quality of video content to subscribers of a given video service depending on their network tariffs and viewing preferences. As such a set of bitstreams which should be used for conformance testing of MPEG-4 Error
18、Resilient Simple Scalable Profile is proposed. Amendment 5:2006 toCAN/CSA-ISO/IEC 14496-4:06ISO/IEC 14496-4:2004/Amd.5:2005(E) ISO/IEC 2005 All rights reserved 1Information technology Coding of audio-visual objects Part 4: Conformance testing AMENDMENT 5: Conformance extensions for error-resilient s
19、imple scalable profile Add the following to 5.5.3.1: 5.5.3.1.36 Test bitstream #L0bGE-1 Specification: This bitstream tests dynamic performance of the decoder. It puts stress on a decoder at Level L0b of the Simple Profile. It has a bitrate close to the maximum allowed at Level L0b. It utilizes exte
20、nsively the maximum allowed VBV buffer size. The default values are used for the VBV parameters vbv_buffer_size and vbv_occupancy, as defined in Annex D of ISO/IEC 14496-2 “Video buffering verifier”. Functional stage: Prediction bandwidth Add the following subclauses after 5.5.3.3, and change the su
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