1、Information technology Multimedia framework (MPEG-21) Part 9: File Format AMENDMENT 1: MIME type registrationAmendment 1:2009 (IDT) toNational Standard of CanadaCAN/CSA-ISO/IEC 21000-9-07(ISO/IEC 21000-9:2005, IDT)NOT FOR RESALE.PUBLICATION NON DESTINE LA REVENTE.CSA Standards Update ServiceAmendmen
2、t 1:2009 toCAN/CSA-ISO/IEC 21000-9-07October 2009Title: Information technology Multimedia framework (MPEG-21) Part 9: File Format AMENDMENT 1: MIME type registrationPagination: 5 pages (iii preliminary and 2 text)To register for e-mail notification about any updates to this publicationgo to www.Shop
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4、egal to find out how we protect your personal information.Reference numberISO/IEC 21000-9:2005/Amd.1:2008(E)ISO/IEC 2008INTERNATIONAL STANDARD ISO/IEC21000-9First edition2005-07-01AMENDMENT 12008-10-01Information technology Multimedia framework (MPEG-21) Part 9: File Format AMENDMENT 1: MIME type re
5、gistration Technologies de linformation Cadre multimdia (MPEG-21) Partie 9: Format de fichier AMENDEMENT 1: Enregistrement de type MIME ISO/IEC 21000-9:2005/Amd.1:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed
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10、1 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org ii ISO/IEC 2008 All rights reservedAmendment 1:2009 toCAN/CSA-ISO/IEC 21000-9-07ISO/IEC 21000-9:2005/Amd.1:2008(E) ISO/IEC 2008 All rights reserved iiiForeword ISO (the International Organization for Standardization) and IEC (the Int
11、ernational 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 respective organization to deal with particular
12、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 technology, ISO and IEC have established
13、 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 Standards adopted by the joint technical co
14、mmittee 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 subject of patent rights. ISO and IEC s
15、hall not be held responsible for identifying any or all such patent rights. Amendment 1 to ISO/IEC 21000-9:2005 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information. Amendment 1:2009 toCAN
16、/CSA-ISO/IEC 21000-9-07ISO/IEC 21000-9:2005/Amd.1:2008(E) ISO/IEC 2008 All rights reserved 1Information technology Multimedia framework (MPEG-21) Part 9: File Format AMENDMENT 1: MIME type registration After Annex C add the following new annex: Annex D (normative) MIME type registration MIME media t
17、ype name: application MIME subtype name: mp21 Required parameters: none Optional parameters: none Encoding considerations: base64 is generally preferred; files are binary and should be transmitted without CR/LF conversion, 7-bit stripping, etc. Note that although files conforming to ISO/IEC 21000-2
18、are textual XML the mp21 file which contains it is binary. Security considerations: It is possible to inject non-compliant MPEG streams (Audio, Video, and Systems) in the MP21 file to overload the receiver/decoders buffers. This might compromise the functionality of the receiver or even crash it. An
19、 MP21 file supports the storage of stream types, including commands that are executed on the terminal such as Digital Item Methods based on ECMASCRIPT for which also bindings to Java(TM) and C+ exists. It is possible to use one or more of the above in a manner non-compliant to MPEG to crash the rece
20、iver or temporarily make it unavailable. Authentication mechanisms can be used to validate of the sender and the data to prevent security problems due to non-compliant malignant MP21 files. Interoperability considerations: A number of interoperating implementations exist within the ISO/IEC 21000 com
21、munity, and that community has reference software for reading and writing the file format. Published specification: ISO/IEC 21000-9:2005 Applications which use this media type: Multimedia Amendment 1:2009 toCAN/CSA-ISO/IEC 21000-9-07ISO/IEC 21000-9:2005/Amd.1:2008(E) 2 ISO/IEC 2008 All rights reserv
22、edAdditional information: Magic number(s): none File extension(s): m21 and mp21 are both declared at http:/ and http:/ Macintosh File Type Code(s): mp21 is registered with Apple. Person & email address to contact for further information: David Singer, Intended usage: COMMON Author/Change controller
23、: David Singer, ISO/IEC 21000 file format chair Amendment 1:2009 toCAN/CSA-ISO/IEC 21000-9-07ISO/IEC 21000-9:2005/Amd.1:2008(E) ICS 35.040 ISO/IEC 2008 All rights reserved Copyright NoticeThis Amendment to the International Standard contains information copyright protected by the International Organ
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