International organisation for standardisation organisation internationale de normalisation

3MPEG-21

This contribution proposed a new requirement on Digital Item Declaration. By consensus, the requirement “MPEG-21 shall support conveying the URI-reference of the DIDL (XML) document in the DIDL (XML) document” has been included in the new MPEG-21 Requirements document (N7063).

This contribution proposed a new requirement on Digital Item Identification. By consensus, the requirement “MPEG-21 shall support varying levels of granularity with respect to DI identification” has been included in the new MPEG-21 Requirements document (N7063).

This contribution proposed a so-called Mobile REL profile adequate for constrained complexity devices. The proposal improves the description of the Mobile REL profile already included in the MPEG-21 Profiles under Consideration document from the Palma meeting. Based on this contribution, it was decide to update the MPEG-21 Profiles under Consideration document and issue a new version (N7064). It was also agreed to find a better name for this profile since the current proposed name is misleading in the sense that it may give the idea that the profile is only adequate for mobile devices which is not the case. An AHG was created with one of the mandates targeting further work on this profile. It is worthwhile to mention that in a liaison letter, DMP informed MPEG to have adopted this profile for its specifications.

This contribution reports on ongoing work targeting the possible definition of a MPEG-21 REL profile matching OMA DRM v.2 specification, targeting easy conversion between the two REL specifications. No profile has been explicitly proposed. It was agreed to study in the AHG the relation with the Mobile REL profile and decide at the next meeting on the proposal or not of a new profile for the MPEG-21 Profiles under Consideration document.

These contributions follow the discussions at the last meeting on possible term inconsistencies and circularities in the RDD specification for which there is no agreement. The discussion was centered on some use cases which should show the claimed problems but there was still no agreement, not even in the existence of any problems. It was decided to work towards better identifying the possible problems and propose alternative solutions. Since this is mostly a technical issue, an AHG was created under MDS to accommodate the activities targeting the clarification of all issues involved.

This contribution reviewed the MPEG-21 DIA specification related to BSDL at the light of the corresponding requirements. Based on the requirements, this contribution proposes some amendments to the BSDL specification which are to be technically addressed in the MDS subgroup.

This contribution reports the activities and conclusions of the AHG on DI Streaming, specially the outcome in terms of revising the Requirements document from last meeting. To further improve the DI Streaming Requirements document during the week, a BoG was created under the responsibility of Sylvain Devillers. The BoG met many times and, by the end of the week, the people involved was able to produce a much cleaner and fully consensual document, including not only the requirements but also some use cases and relevant terminology (N7065). Based on this achievement, it was decided to issue a Call for Proposals on DI Streaming with evaluation in the week end before the next MPEG meeting (N7066). To help in the evaluation process, a document with Evaluation Criteria and Procedures for DI Streaming was also created (N7060).

This contribution makes a review of various technologies at the light of the DI Streaming requirements from the last meeting. No specific action had to be taken regarding this contribution; it may lead to a response to the Call for Proposals on DI Streaming released at this meeting.

This contribution addressed mechanisms for a User to request fragments of a remotely-located XML document. Based on this contribution, it was decided to create a draft requirements document after the requirements have been agreed by consensus (N7067). The decision regarding where to fit this work in terms of specification will be taken at the next meeting.

4MPEG-A

11780 AHG on MAF Development, Klaus Diepold, Wo Chang

This contribution reported the activities developed in the context of AHG on MAF development since the last MPEG meeting. Most the activity has been related to the preparation of a draft White Paper on MAFs which should serve to present the MAF concept to newcomers and outside MPEG.

11980 White Paper on MPEG-A, Klaus Diepold

This contribution included the result of the work in the AHG targeting the preparation of a White Paper on MAFs to be used to market the concept of MAFs, inside and outside MPEG. During the week, this initial document has been improved and a final paper has been released at the end of the week (N7068). Special thanks for this work are due to Klaus Diepold. In relation to this activity, also a draft PDTR for MPEG-A Part 1 called Purpose for Multimedia Application Formats was released (N7069).

11791 AHG on Image Player MAF, M. Bober, A. Yamada, S. K. Kim

This contribution reported the activities developed in the AHG on the Image Player MAF, also called Photo Album MAF, since last MPEG meeting. Basically, no activity had happened.

12048 Application Scenarios and Derived Requirements for Protected Music Player MAF with Low Complexity DRM Extensions, Stefan Kraegeloh, Harald Fuchs

This contribution details the application scenarios and requirements for a MAF under consideration, the so-called Protected Music Player MAF. This document proposes two extensions to the Music Player MAF (which correspond to MPEG-A Part 2 and which go to FDIS at this meeting): 1) the first extension basically adds to the Music Player MAF encryption capabilities and AES is proposed as the (external) encryption solution to adopt; 2) the second extension adds to the first extension some licensing capabilities using the MPEG-21 REL specification. Following the intense discussion, it was agreed to update the MAFs under Consideration document (N7070) and the Audio Subgroup took the task to prepare a document with a more detailed specification of these proposed MAFs in order a more detailed analysis could be made. It was expected that this document would be presented to the relevant MPEG subgroups, notably Requirements and MDS. A major issue for this MAF is also the evidence of support by industry.

12046 Information about cryptographic algorithms suitable for protecting MPEG encoded content, Birgit Bartel-Kurz, Stefan Kraegeloh

This contribution brings supporting information on the encryption solution to adopt in the first extension of the Music Player MAF proposed in contribution 12048. While there was large agreement that AES is a good solution, no agreement was reached on the usage of a single or two key lengths.

11904 Proposal for super-distribution MAF, Zvi Lifshitz, The TIRAMISU IST project

This contribution brings a more detailed and complete description of a MAF already under consideration; following this contribution, it was agreed to update the MAFs under Consideration document (N7070). Besides the technical proposals made which need further motivation and precision, the industrial support for this MAF was discussed; more information is expected at the next meeting regarding this issue since this information is essential to have an idea about the eventual manpower available to prepare the technical specification and the corresponding reference software.

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29view -> International organisation for standardisation organisation internationale de normalisation

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