4.2Output documents related to MPEG-7 Visual
No.
|
Title
|
TBP
|
Available
|
|
15938-3 MPEG-7 Visual
|
|
|
7087
|
Disposition of Comments on ISO/IEC 15938-3:2002/PDAM2
|
No
|
05/04/22
|
7088
|
Text of ISO/IEC 15938-3:2002/FPDAM2
|
No
|
05/04/22
|
7089
|
MPEG-7 Visual XM Document version 24.0
|
No
|
05/05/06
|
7090
|
Description of Core Experiments for MPEG-7 New Visual Extensions
|
No
|
05/04/22
| 4.3Output documents related to MPEG-7 Part 8
No.
|
Title
|
TBP
|
Available
|
|
15938-8 MPEG-7 TR (ext. and use of MPEG-7 descriptions)
|
|
|
7091
|
Text of ISO/IEC TR 15938-8:2002 DCOR1
|
No
|
05/04/22
|
7092
|
WD 2.0 of ISO/IEC TR 15938-8:2002/Amd.2
|
No
|
05/04/22
|
5Scalable Video Coding
See the JVT report section for design work on the scalable video coding elementary stream specification. This section contains information on the relationship of that work to systems specifications.
5.1SVC and Systems
Inputs on SVC file formats and streaming issues were reviewed jointly with the MPEG Systems subgroup. These issues are highly related to the high-level syntax of AVC/SVC (see JVT report). As a first action item, it was decided to create a conceptual document to reflect the present status in SVC file format and systems-level proposals (consensus items as well as open issues).
Documents reviewed in SVC/Systems:
12057
|
Ye-Kui Wang
Miska M. Hannuksela
|
Storage of scalability information in file format
Goal: Simplify operation of the server. Example of 3GPP MBMS protocol stack is shown. Based on ISO FF, applicable to any scalable video coding format. Extension of AVC FF containing decoding dependency info, buffer info, required parameter sets: Total number of layers, mapping of samples to layers, property of layer, scalability info of layer. Different optional boxes to avoid redundancy. Access and adaptation to be made easy: IOP, frame rate, frame size and bit rate information. ROI should also be supported. Concept of sub-sample: Contiguous NAL unit within one sample (access unit). Supports access on sub-picture level, e.g. ROI (rectangular). Mapping of full scalability to layered scalability possible.
|
12043
|
Thomas Rathgen
Peter Amon
Andreas Hutter
|
ISO/MP4 File Format for Storage of Scalable Video
View of scalable video streams in a "data cube" expressing the three axes of scalability. Allows full freedom of scalability. "Layered scalability mode" defines subset of combinations of S/T/SNR scalability and could be more efficient. Basic definition by NALU types. Base layer NALUs are stored backward compatible with AVC FF, including temporal scalability. Scalability extension NALU header on top of that, supporting both "layered" and "full" scalability modes. Requires 7 or 15 bit level ID field. Same namespace and brand names as AVC FF, however some restrictions apply. Mapping rules to translate full scalability into layered scalability mode. Adaptation rules should be stored in a separate metadata track. Otherwise, SVC NALUs are transmitted without additional information. Backward compatibility with RTP transport format. Propose to go for first WD of SVC FF.
|
12062
|
Mohammed Z. Visharam
Ali Tabatabai
|
Proposal to support the storage of SVC streams in the AVC File Format.
Propose entries for temporal layer dependency and spatial layer dependency description. Derived from the decodability_dependency_information of WD1. Temporal: Derived form TemporalLevelID: temporalLevelNumber and dependency_count. Spatial similarly derived from DependencyID field. Each DependencyID is associated with the corresponding frame rate, resolution etc. SVC Dependency Grouping Box designed to contain information about these two dependency types. Quality dependency signaled in parallel.
|
12057
|
Ye-Kui Wang
Miska M. Hannuksela
|
Storage of scalability information in file format
Goal: Simplify operation of the server. Example of 3GPP MBMS protocol stack is shown. Based on ISO FF, applicable to any scalable video coding format. Extension of AVC FF containing decoding dependency info, buffer info, required parameter sets: Total number of layers, mapping of samples to layers, property of layer, scalability info of layer. Different optional boxes to avoid redundancy. Access and adaptation to be made easy: IOP, frame rate, frame size and bit rate information. ROI should also be supported. Concept of sub-sample: Contiguous NAL unit within one sample (access unit). Supports access on sub-picture level, e.g. ROI (rectangular). Mapping of full scalability to layered scalability possible.
|
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