ISO/IEC JTC 1/SC 29 N - IPSJ/ITSCJ · Web viewInformation technology — Multimedia application format (MPEG-A) — Part 6: Professional archival application format, AMENDMENT 1: Conformance

INTERNATIONAL ORGANISATION FOR STANDARDISATIONORGANISATION INTERNATIONALE DE NORMALISATION

ISO/IEC JTC1/SC29/WG11CODING OF MOVING PICTURES AND AUDIO

ISO/IEC JTC1/SC29/WG11MPEG2008/N10457

February 2009, Lausanne, CH

Source: SystemsTitle: Text of ISO/IEC 23000-6/FPDAM 1 Conformance and reference software for professional archival application formatAuthor: Houari Sabirin, Hendry, Noboru Harada, and Munchurl Kim

Document type: Document subtype: Document stage: Document language:

ISO/IEC JTC 1/SC 29

Date: 2009-02-06

ISO/IEC 23000-6:200X/FPDAM 1

ISO/IEC JTC 1/SC 29/WG 11

Secretariat:

Information technology — Multimedia application format (MPEG-A) — Part 6: Professional archival application format, AMENDMENT 1: Conformance and reference software for professional archival application format

Élément introductif — Élément central — Partie 6: Titre de la partie

Warning

This document is not an ISO International Standard. It is distributed for review and comment. It is subject to change without notice and may not be referred to as an International Standard.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to provide supporting documentation.


Copyright notice

This ISO document is a Draft International Standard and is copyright-protected by ISO. Except as permitted under the applicable laws of the user's country, neither this ISO draft nor any extract from it may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, photocopying, recording or otherwise, without prior written permission being secured.

Requests for permission to reproduce should be addressed to either ISO at the address below or ISO's member body in the country of the requester.

ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail [email protected] www.iso.org

Reproduction may be subject to royalty payments or a licensing agreement.

Violators may be prosecuted.

© ISO/IEC 2009 – All rights reserved III


Foreword

ISO (the International 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 by the respective 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 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 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 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 23000-6:200X was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information.

IV © ISO/IEC 2009 – All rights reserved

DRAFT AMENDMENT ISO/IEC 23000-6:200X/FPDAM 1

Information technology — Multimedia application format (MPEG-A) — Part 6: Professional archival application format, AMENDMENT 1: Conformance and reference software for professional archival application format

Add clauses 11 and 12:

11 Conformance Points

11.1 File format

11.1.1 General

Conformant files shall be readable by the professional archival application format file extractor as described in 12.2. The general structure of the file shall conform to the normative file structure defined in 9.2.

11.1.2 Conformant files

Some conformant files had been made using the authoring tool to demonstrate some possibilities of combination of components defined by the specification of professional archival application format. Table AMD1.1 shows the list of conformant files with their conformance points to the specification.

Table AMD1.1 – Conformance files

MPEG-21 File Format

MPEG-21 DIDL 2nd

Ed.

MPEG-21 DII

MPEG-7 CI

MPEG-21 IPMP BP

MPEG-21 REL

MPEG-7 MDS

File 1 File 2 File 3 File 4 File 5

Conformant point 1 Conformant point 2 Conformant point 3 Conformant point 4All Conformant point 5

12 Reference Software

12.1 Authoring tool

12.1.1 Architecture

The PA AF authoring tool provides a software implementation example to archive PA AF contents into MPEG-21 file format. The authoring tool will contain the following features:

© ISO/IEC 2009 – All rights reserved 1

DRAFT AMENDMENT ISO/IEC 23000-6:200X/FPDAM 1

1. File manager to locate, lists and register the files to be archived2. Metadata authoring modules for MPEG-21 and MPEG-7 metadata3. File packager to package the contents and metadata into the archive4. Additional content-specific modules/library to preview the contents such as audio player, video player,

image renderer, etc.

Figure AMD1.1 – A PA-AF authoring tool architecture

The authoring tool system architecture contains of several modules as shown in Figure 1. The input of the authoring tool is the files and the directory structure. The file manager will first lists and register the files to be packaged to the file format. It shall maintain information regarding the relative location of each files related to the directory structure, which will be stored in the meta box as well as MPEG-21 metadata. A simple metadata parser is included in authoring tool to validate XML input file (e.g. an MPEG-7 files may be validated by parsing the existence of mpeg7 elements, etc.). The file parser will read the file contents and obtain file information such as file size, file type, etc., and prepare the files to be packaged. An optional media player will be used to let user review the files in the user interface (an external module such as DirectX DirectShow will be necessary for this module). A protection module manages the protection to selected (or all) contents by providing encryption module and provide all pertinent information to generate appropriate MPEG-21 IPMP and/or REL metadata. All the information resulted from file parser and protection module are collected by the metadata generator to create MPEG-7 and MPEG-21 metadata and finally packaged into MPEG-21 file format by the file packager.

12.1.2 Software Modules

The authoring tool software is constructed from the modules as shown in Figure 2. It is based on the conformance point of the PA AF as specified in clause 10. The basis module contains of MPEG-21 DID/DII parser and MPEG-7 content information parser as required by the conformance point 1. It also includes the packaging library (such as ISOLib), media player library to review the contents (any library can be used, but most probably using simple DirectShow-based modules), user interface library, and file manager library.

The module to create PA AF file conforms to conformation point 2 includes the basis module with MPEG-21 IPMP parser. The module to create PA AF file conforms to conformation point 3 includes the basis module with MPEG-21 REL parser. The module to create PA AF file conforms to conformation point 4 includes the basis module with MPEG-7 MDS parser. Finally the module to create PA AF file conforms to conformation point 5 will includes all modules aforementioned.


Figure AMD1.2 – PA-AF Authoring tool software modules

12.2 PA-AF File Extractor

The PA AF file extractor is an application to extract (un-archive) file(s) out from a PA-AF file. The file extractor will contain the following features:

1. Content manager based on information parsed from MPEG-21 and MPEG-7 metadata2. File unpacker to unpack the contents3. Additional content-specific modules/library to preview the contents such as audio player, video

player, image renderer, etc.4. Unprotection modules to decrypt protected contents

12.2.1 Architecture

Figure AMD1.3 – PA-AF file extractor system architecture

The file extractor system architecture is as shown in Figure 3. The file un-packer will unpack the PA AF file and the file format parser will extract the information from the PA AF file. Any metadata will be parsed regarding to its type (MPEG-21 DID/DII, MPEG-21 IPMP, MPEG-21 REL, MPEG-7 CI, and MPEG-7 MDS) by the metadata parser. The unprotect module will unprotect the content based on the information given in the file, and finally the content manager will lists and manage the content into files and directory structure. An additional media player will be used to handle the content preview.


12.2.2 Software Modules

The software modules of file extractor are similar to those of authoring tool with reversed function such as metadata generator becomes metadata parser; file packager becomes file un-packer, and so on so forth. The modules are as shown in Figure 4.

Figure AMD1.4 – A PA-AF file extractor software modules

4 © ISO/IEC 2009 – All rights reserved

Add Annex H (informative):

Annex H

(informative)

Implementation of Authoring Tool and File Extractor

H. 1 General

This annex provides description the implementation of software that provides functionality for authoring tool and file extractor.

Software platform: Microsoft Visual C++ 2005 on Windows XP operating system

Features: Implementations of authoring tool and file extractor conform to conformance point 1 and have the following features:

1. Package archive into PA-AF file format2. Extract PA-AF file archive and displays corresponding metadata of the contents3. Enables pre-processing tool for compressing audio file using MP4 ALS4. Annotates set of MPEG-7 metadata descriptions specified by conformance point 1.

H. 2 Implementation of Authoring Tool

Figure H.1 shows main window GUI design of application that implements authoring tool. The GUI comprises of two parts: file list section and metadata input section.

To archive files or files in a directory into a single PA-AF file, user can simply drag the desired files or directories into the file list box; in addition to dragging facility, user can also add file to be archived by pressing the “Add files” button. The list box will display the files and directory structure, as shown in Figure H.1.


Figure H.1 – Creating archive

To remove files from the list box, simply press the “Remove files” button.

To set MPEG-7 metadata a file that is to be archived, user shall click a file in the file list and annotate the metadata value corresponds to the MPEG-7 metadata element shown in metadata list. Selecting the metadata element will directly set the focus of GUI to the input box. Finally press “Submit” to store the value. Repeat this task to modify the metadata value.


Figure H.2 – Options window

To process the input files into a single PA-AF file, user shall press the “Save archive” button.

The packager has several options to define the pre-processing tool and file MIME types. A configuration (config.ini) file is used to store the options. As shown in Table H.1 the configuration file defines the following settings:

- Audio compression: is used to define the location of audio compression tool executable file, its usage (true or false) and any necessary parameters used by the tool

- Audio compression mime type: is used to define what kind of file type can be compressed by the audio compression tool when packaging the archive

- Other compression mime type: is used to define what kind of file type can be compressed by other compression tool when packaging the archive (currently inactive)

- File mime type: is used to define the file type for annotating MPEG-21 DID resource mime type attribute

The options can be modified via option windows as shown in Figure H.2.


Table 1 – Config.ini file

#audio_compressionlocation: F:\PAAF\reference_software\mp4als\mp4als\bin\win\Debug\mp4alsRM22.exeuse: trueparam: ""

#audio_compression_mimetype

wav audio/x-wavwave audio/x-wavaif audio/x-aiffaiff audio/x-aiffaifa audio/x-aiffbwf audio/x-bwfbwf64 audio/x-bwfwav64 audio/x-wave64w64 audio/x-wave64paf audio/x-paf.

#other_compression_mimetype

other application/octet-streammp4 audio/mp4m4a audio/mp4als audio/x-mp4alstxt text/plainzip application/zipany application/binary.

#file_mimetype

other application/octet-stream323 text/h323acx application/internet-property-streamai application/postscriptaif audio/x-aiffaifc audio/x-aiffaiff audio/x-aiffasf video/x-ms-asfasr video/x-ms-asfasx video/x-ms-asfau audio/basicavi video/x-msvideoaxs application/olescriptbas text/plainbcpio application/x-bcpiobin application/octet-streambmp image/bmpc text/plaincat application/vnd.ms-pkiseccatcdf application/x-cdfcer application/x-x509-ca-certclass application/octet-streamclp application/x-msclipcmx image/x-cmxcod image/cis-cod


cpio application/x-cpiocrd application/x-mscardfilecrl application/pkix-crlcrt application/x-x509-ca-certcsh application/x-cshcss text/cssdcr application/x-directorder application/x-x509-ca-certdir application/x-directordll application/x-msdownloaddms application/octet-streamdoc application/msworddot application/msworddvi application/x-dvidxr application/x-directoreps application/postscriptetx text/x-setextevy application/envoyexe application/octet-streamfif application/fractalsflr x-world/x-vrmlgif image/gifgtar application/x-gtargz application/x-gziph text/plainhdf application/x-hdfhlp application/winhlphqx application/mac-binhex40hta application/htahtc text/x-componenthtm text/htmlhtml text/htmlhtt text/webviewhtmlico image/x-iconief image/iefiii application/x-iphoneins application/x-internet-signupisp application/x-internet-signupjfif image/pipegjpe image/jpegjpeg image/jpegjpg image/jpegjs application/x-javascriptlatex application/x-latexlha application/octet-streamlsf video/x-la-asflsx video/x-la-asflzh application/octet-streamm13 application/x-msmediaviewm14 application/x-msmediaviewm3u audio/x-mpegurlman application/x-troff-manmdb application/x-msaccessme application/x-troff-memht message/rfc822mhtml message/rfc822mid audio/midmny application/x-msmoney


mov video/quicktimemovie video/x-sgi-moviemp2 video/mpegmp3 audio/mpegmpa video/mpegmpe video/mpegmpeg video/mpegmpg video/mpegmpp application/vnd.ms-projectmpv2 video/mpegms application/x-troff-msmvb application/x-msmediaviewnws message/rfc822oda application/odap10 application/pkcs10p12 application/x-pkcs12p7b application/x-pkcs7-certificatesp7c application/x-pkcs7-mimep7m application/x-pkcs7-mimep7r application/x-pkcs7-certreqrespp7s application/x-pkcs7-signaturepbm image/x-portable-bitmappdf application/pdfpfx application/x-pkcs12pgm image/x-portable-graymappko application/ynd.ms-pkipkopma application/x-perfmonpmc application/x-perfmonpml application/x-perfmonpmr application/x-perfmonpmw application/x-perfmonpnm image/x-portable-anymappot application/vnd.ms-powerpointppm image/x-portable-pixmappps application/vnd.ms-powerpointppt application/vnd.ms-powerpointprf application/pics-rulesps application/postscriptpub application/x-mspublisherqt video/quicktimera audio/x-pn-realaudioram audio/x-pn-realaudioras image/x-cmu-rasterrgb image/x-rgbrmi audio/midroff application/x-troffrtf application/rtfrtx text/richtextscd application/x-msschedulesct text/scriptletsetpay application/set-payment-initiationsetreg application/set-registration-initiationsh application/x-shshar application/x-sharsit application/x-stuffitsnd audio/basicspc application/x-pkcs7-certificates


spl application/futuresplashsrc application/x-wais-sourcesst application/vnd.ms-pkicertstorestl application/vnd.ms-pkistlstm text/htmlsvg image/svg+xmlsv4cpio application/x-sv4cpiosv4crc application/x-sv4crcswf application/x-shockwave-flasht application/x-trofftar application/x-tartcl application/x-tcltex application/x-textexi application/x-texinfotexinfo application/x-texinfotgz application/x-compressedtif image/tifftiff image/tifftr application/x-trofftrm application/x-msterminaltsv text/tab-separated-valuestxt text/plainuls text/iulsustar application/x-ustarvcf text/x-vcardvrml x-world/x-vrmlwav audio/x-wavwcm application/vnd.ms-workswdb application/vnd.ms-workswks application/vnd.ms-workswmf application/x-msmetafilewps application/vnd.ms-workswri application/x-mswritewrl x-world/x-vrmlwrz x-world/x-vrmlxaf x-world/x-vrmlxbm image/x-xbitmapxla application/vnd.ms-excelxlc application/vnd.ms-excelxlm application/vnd.ms-excelxls application/vnd.ms-excel

H. 2 Implementation of File Extractor

Functionality of file extractor is shown in Figure H.3 and Figure H.4.

To load or open a PA AF file, user shall press the “Load archive” button and select the file from the file browser. The list box will show the directory structure that is stored in the MPEG-21 DIDL metadata instantiation inside the PA AF file.

The files can be extracted individually (single file). If user press “Extract selected” button after selecting a file from the list box, the application will extract the file from the PA-AF file and store the extracted file into its respective file location as described by the file path obtained from MPEG-21 DIDL metadata..


To show the MPEG-21 and MPEG-7 metadata annotated for a file, user shall click the file in the list. The metadata will be shown in the lower part of extractor GUI.

Table 2 shows the example of MPEG-21 instantiation stored inside the PA-AF file. The metadata includes the PA-AF Attribute Model and MPEG-7 Creation Information for each of the content.

Figure H.3 – Archive extractor


Figure H.4 – Archive extractor shows non-ASCII character

Table 2 – Example of MPEG-21 XML instantiation stored in the PA AF archive

<?xml version="1.0" encoding="UTF-8"?><DIDL xmlns="urn:mpeg:mpeg21:2002:02-DIDL-NS" xmlns:ipmpdidl="urn:mpeg:mpeg21:2004:01-IPMPDIDL-NS" xmlns:ipmpinfo="urn:mpeg:mpeg21:2004:01-IPMPINFO-BASE-NS" xmlns:mx="urn:mpeg:mpeg21:2003:01-REL-MX-NS" xmlns:r="urn:mpeg:mpeg21:2003:01-REL-R-NS" xmlns:sx="urn:mpeg:mpeg21:2003:01-REL-SX-NS" xmlns:enc="http://www.w3.org/2001/04/xmlenc#" xmlns:dsig="http://www.w3.org/2000/09/xmldsig#" xmlns:dii="urn:mpeg:mpeg21:2002:01-DII-NS" xmlns:pamaf="urn:mpeg:mpeg21:2007:01-PAMAF-NS" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mpeg7="urn:mpeg:mpeg7:schema:2001"


xsi:schemaLocation="urn:mpeg:mpeg21:2003:01-REL-R-NS rel-r.xsd urn:mpeg:mpeg21:2003:01-REL-MX-NS rel-mx.xsd urn:mpeg:mpeg21:2004:01IPMPINFO-BASE-NS IPMPInfo-Profilev0.4.xsd urn:mpeg:mpeg21:2004:01-IPMPDIDL-NS IPMPDIDL.xsd urn:mpeg:mpeg21:2002:01-DII-NS schema/dii.xsd urn:mpeg:mpeg21:2002:02-DIDL-NS schema/DIDL.xsd urn:mpeg:mpeg21:2007:01-PAMAF-NS schema/PAMAF-FileAttribute-version1.1.xsd urn:mpeg:mpeg7:schema:2001 schema/Mpeg7-2001.xsd">

<Container id="PAAF_root"><Item id="1">

<Descriptor><Statement mimeType="text/xml">

<pamaf:FileSystemAttributes><pamaf:Name>%45348%51060%48260 %49464%49345%51032 %47784%46304

%51648%49885, %45348%51060%48260.htm</pamaf:Name><pamaf:ParentPath ref="D:\_20052136\Fall 2008\MPEG-86\PAAF"/><pamaf:EncodedPath charset="UTF-8" original="yes" default="yes"> 네이버 세상의 모든 지식, 네이버.htm </pamaf:EncodedPath><pamaf:OriginalSize>90892</pamaf:OriginalSize><pamaf:OriginalTimestamp>2008-09-25T10:49:06</pamaf:OriginalTimestamp><pamaf:OriginalAttributes> </pamaf:OriginalAttributes>

</pamaf:FileSystemAttributes></Statement><Statement mimeType="text/xml">

<Mpeg7>

<Description xsi:type="ContentEntityType"><MultimediaContent xsi:type="MultimediaType">

<Multimedia><CreationInformation>

<Creation><Title>naver page, korean</Title><Abstract>

<FreeTextAnnotation/></Abstract><Creator>

<Role href="urn:mpeg:mpeg7:cs:RoleCS:2001:"/><Agent xsi:type="PersonType">

<Name><GivenName/><FamilyName/>

</Name></Agent>

</Creator><CreationCoordinates>

<Location><Name/>

</Location><Date>

<TimePoint/></Date>

</CreationCoordinates><CreationTool>

<Tool><Name/>

</Tool></CreationTool><CopyrightString/>

</Creation><Classification>

<Form href="urn:mpeg:mpeg7:cs:FormatCS:2001:1.1"><Name/>

</Form><Genre href="urn:mpeg:mpeg7:cs:ContentCS:2001:1.3.1">


<Name/></Genre><Subject href="urn:mpeg:mpeg7:cs:SubjectCS:2001:2.1">

<Name/></Subject><Purpose href="urn:mpeg:mpeg7:cs:IntentionCS:2001:2.1">

<Name/></Purpose><Language type="original"/><Release date=""/><Target>

<Market href=""><Name/>

</Market><Region/>

</Target><ParentalGuidance>

<ParentalRating href="urn:mpeg:mpeg7:cs:MPAAParentalRatingCS:2001:G">

<Name/></ParentalRating>

</ParentalGuidance><MediaReview>

<Rating><RatingValue/><RatingScheme best="10" worst="1" style="higherBetter">

<Name>Overall</Name></RatingScheme>

</Rating><FreeTextReview/><Reviewer>

<Agent xsi:type="PersonType"><Name>

<GivenName/><FamilyName/>

</Name></Agent>

</Reviewer></MediaReview>

</Classification><RelatedMaterial>

<DisseminationFormat href="urn:mpeg:mpeg7:cs:DisseminationFormatCS:2001:4"/>

<MaterialType><Name/>

</MaterialType><MediaLocator>

<MediaUri/></MediaLocator>

</RelatedMaterial></CreationInformation>

</Multimedia></MultimediaContent>

</Description></Mpeg7>

</Statement></Descriptor><Component id="ItemComponent01">

<Resource mimeType="text/html" ref="#item_id=1" contentEncoding="application/binary"/></Component>

</Item><Item id="2">

<Descriptor><Statement mimeType="text/xml">

<pamaf:FileSystemAttributes><pamaf:Name>

%27005%22825%12364%36939%21942%12377%12427%12509%12540%12479%12523%12469%12452%12488


%65306 %12304%12452%12531%12501%12457%12471%12540%12463%12305Infoseek.htm</pamaf:Name><pamaf:ParentPath ref="D:\_20052136\Fall 2008\MPEG-86\PAAF"/><pamaf:EncodedPath charset="UTF-8" original="yes" default="yes"> 楽天が運営するポータルサイト：【インフォシーク】Infoseek.htm </pamaf:EncodedPath><pamaf:OriginalSize>203843</pamaf:OriginalSize><pamaf:OriginalTimestamp>2008-09-25T10:57:10</pamaf:OriginalTimestamp><pamaf:OriginalAttributes> </pamaf:OriginalAttributes>

</pamaf:FileSystemAttributes></Statement><Statement mimeType="text/xml">

<Mpeg7>

<Description xsi:type="ContentEntityType"><MultimediaContent xsi:type="MultimediaType">

<Multimedia><CreationInformation>

<Creation><Title>infoseek page, japanese</Title><Abstract>

<FreeTextAnnotation/></Abstract><Creator>

<Role href="urn:mpeg:mpeg7:cs:RoleCS:2001:"/><Agent xsi:type="PersonType">

<Name><GivenName/><FamilyName/>

</Name></Agent>

</Creator><CreationCoordinates>

<Location><Name/>

</Location><Date>

<TimePoint/></Date>

</CreationCoordinates><CreationTool>

<Tool><Name/>

</Tool></CreationTool><CopyrightString/>

</Creation><Classification>

<Form href="urn:mpeg:mpeg7:cs:FormatCS:2001:1.1"><Name/>

</Form><Genre href="urn:mpeg:mpeg7:cs:ContentCS:2001:1.3.1">

<Name/></Genre><Subject href="urn:mpeg:mpeg7:cs:SubjectCS:2001:2.1">

<Name/></Subject><Purpose href="urn:mpeg:mpeg7:cs:IntentionCS:2001:2.1">

<Name/></Purpose><Language type="original"/><Release date=""/><Target>

<Market href=""><Name/>

</Market>


<Region/></Target><ParentalGuidance>

<ParentalRating href="urn:mpeg:mpeg7:cs:MPAAParentalRatingCS:2001:G">

<Name/></ParentalRating>

</ParentalGuidance><MediaReview>

<Rating><RatingValue/><RatingScheme best="10" worst="1" style="higherBetter">

<Name>Overall</Name></RatingScheme>

</Rating><FreeTextReview/><Reviewer>

<Agent xsi:type="PersonType"><Name>

<GivenName/><FamilyName/>

</Name></Agent>

</Reviewer></MediaReview>

</Classification><RelatedMaterial>

<DisseminationFormat href="urn:mpeg:mpeg7:cs:DisseminationFormatCS:2001:4"/>

<MaterialType><Name/>

</MaterialType><MediaLocator>

<MediaUri/></MediaLocator>

</RelatedMaterial></CreationInformation>

</Multimedia></MultimediaContent>

</Description></Mpeg7>

</Statement></Descriptor><Component id="ItemComponent02">

<Resource mimeType="text/html" ref="#item_id=2" contentEncoding="application/binary"/></Component>

</Item></Container>

</DIDL>

Documents

ISO/IEC JTC 1/SC 29 N - IPSJ/ITSCJ · Web viewInformation technology — Multimedia application format (MPEG-A) — Part 6: Professional archival application format, AMENDMENT 1: Conformance