International organisation for standardisation organisation internationale de normalisation

General Input Documents

1. AHG reports

Number	Session	Title	Source		Dispositions
m32586		AHG report on MPEG-UD	Sanghyun Joo
m32595		MMT AhG Report	Imed Bouazizi
m32612		Report of the AHG on Green MPEG	Felix C. Fernandes, Xavier Ducloux
m32619		AHG on MPEG-DASH	Iraj Sodagar
m32621		AHG on file formats	David Singer
m32625		AHG on Timeline Alignment	Jean Le Feuvre (TELECOM ParisTech ), Youngkwon Lim (Samsung)

AHG reports are accepted.

2. General technical contributions

Number	Session	Title	Source		Dispositions
m31788	Plenary	Table of Replies on ISO/IEC 13818-1:201X/FDAM 3	ITTF via SC 29 Secretariat		Noted
m31790	Plenary	Table of Replies on ISO/IEC 14496-12:2012/FDAM 2 & ISO/IEC 15444-12:2012/FDAM 2	ITTF via SC 29 Secretariat		Noted
m31791	Plenary	Table of Replies on ISO/IEC FDIS 14496-30	ITTF via SC 29 Secretariat	Noted
m32183	Plenary	Update to Audio part of ISO/IEC 23001-8 (CICP)	Max Neuendorf, Ingo Hofmann, Nikolaus Rettelbach, Christian Ertel	Noted
m32309	Plenary	MPEG Software assets	Christian Tulvan, Marius Preda	Noted

3. Summary of discussion

4. Demo

5. FAQ

.

6. AOB

None.

2. MPEG-2 Systems (13818-1)

   1. Topics

      1. ISO/IEC 13818-1:201x AMD 5 Transport of MVC depth video sub-bitstream and extensions to support HEVC low delay coding mode

This amendment to MPEG-2 systems specifies 3 functions:

1. 
   It extends the MVC_extension_descriptor to explicitly signal the association between the 2 views of ‘stereoscopic MVC video’ with left or right eye for display on 3DTV devices. This explicit signaling was not available in earlier versions of MVC video standard or transport of MVC in MPEG-2 systems.
   
2. 
   A ‘transport profile descriptor’ is defined to signal ‘adaptive profile’ such as one used by the DASH specification. The descriptor also defines the ‘complete profile’ which is the current default transport profile. The descriptor is used at a program level to indicate that the program contains a transport stream that may have constraints associated with adaptive streaming applications so that re-purposing systems can properly manage the re-multiplexing of this transport stream.
   

A new annex T that defines the ‘Mime types’ which are registered and commonly used for various MPEG defined elements has also been added.

2. ISO/IEC 13818-1:201x AMD 6 Delivery of Timeline for External Data

This amendment defines tools to identify and synchronize external data associated with an MPEG program in MPEG-2 transport streams. The tools allow:

- alignment of media timelines regardless of PCR discontinuities through a variety of possible time codes,

- signaling of URLs of associated data and their types (mime types, ISOBMFF, MPEG-DASH, MMT),

- announcement of upcoming associated data

3. ISO/IEC 13818-1:201x AMD7 Carriage of Scalable HEVC

2. Contributions

Number	Session	Title	Source		Dispositions
m31832	MPEG-2	Signalling of additional AAC profiles	Ingo Hofmann, Stephan Schreiner	Noted
m32295	MPEG-2	Carriage of HEVC multi-layer extension streams over MPEG-2 Systems	Y. Chen, Y.-K. Wang, Hendry(Qualcomm)	Accepted N14118
m32221	MPEG-2	On Transport of MV HEVC or SHVC over MPEG-2 Systems	Karsten Grüneberg, Thomas Schierl, Yago Sanchez	Accepted N14118
m31817	MPEG-2	13818-1:2013/PDAM 6 - Delivery of Timeline for External Data	DVB	Accepted N14117
m32287	MPEG-2	Update on 13818-1 DAM6	Jean Le Feuvre, Patrick Gendron on behalf of the H2B2VS project	Accepted N14117
m32329	MPEG-2	Comments on 13818-1:2012 AMD8	Alex Giladi	Accepted N14118

3. Summary of discussions

4. Action Points / Ballots

ITU-T H.222.0 (06/2012)|ISO/IEC 13818-1:2013/DAM 5 (SC 29 N 13749)	Systems AMENDMENT 5: Transport of MVC depth video sub-bitstream and extensions to support HEVC low delay coding mode	DAM (2014-01-31)
ITU-T H.222.0 (06/2012)|ISO/IEC 13818-1:2013/PDAM 6 (SC 29 N 13840)	Systems AMENDMENT 6: AMENDMENT 6: Delivery of Timeline for External Data	PDAM (2014-02-04)

3. MPEG-4 ISO Base File Format (14496-12)

   1. Topics

      1. ISO/IEC 14496-12:201X/AMD 3: Font streams and other improvements to file format

2. ISO/IEC 14496-12:201X/AMD 4: Enhanced audio support

This amendment enhances the codec-independent support for audio in the file format, adding the ability to declare downmixing and dynamic range control of audio, and describe the loudness of the program, before or after downmix or dynamic range control. It also supports the codec-independent declaration of channel layout, and identifying the carriage of DRC coefficients both in the audio stream, and in a separate track.

2. Contributions

Number	Session	Title	Source	Dispositions
m31833	File Format	Signalling of SAP types in the ISOBMFF	Ingo Hofmann	Accepted N14121
m32258	File Format	Looped presentation of media in ISOBMFF tracks	Vinod Kumar Malamal Vadakital, Miska M. Hannuksela	Accepted N14148
m32272	File Format	Improved audio support in the ISO base media file format (14496-12)	David Singer, Frank Baumgarte,	Noted
m32311	File Format	Updating the conformance tracking for the file format	David Singer	Accepted N14276
m32512	File Format	Updates for Study text of 14496-12:2012 DAM3	Mitsuhiro Hirabayashi	Accepted N14120

3. Summary of discussions

   1. m31833 Signalling of SAP types in the ISOBMFF

Into the WD of AMD.4, but delete the last sentence (sample groups already cover ‘not assigned to a group of this type’). We note it would be good to have a way to define sample groups that work for any track type. We would also like ‘common names’ for the various SAP types. Let’s align the sap type field with the segment index box.

2. m32258 Looped presentation of media in ISOBMFF tracks

Into the still image draft, but we can simplify a little as tracks with edit lists have defined durations.

3. m32512 Updates for Study text of 14496-12:2012 DAM3

Into the study but we need a new iso8 brand.

4. m32272 Improved audio support in the ISO base media file format (14496-12)

The contribution points out that DRC as used in 3D Audio requires quite a rich set of metadata. Furthermore, that metadata could be in the MP4-FF boxes or in the audio Track (i.e. Elementary Stream or ES). The presenter stated that, in principle, the DRC metada should not be stored twice in the MP4-FF (i.e. in the FF boxes and the Elementary Stream).

The contribution is a proposed amendment to 14496-12, with boxed defined to support DRC. There are a number of issues:

• 
  Define how to carry DRC in FF boxes (which is done)
  
• 
  Define how to carry DRC in ES (which will be done by Audio)
  
• 
  If DRC is in ES, define what might need to be duplicated in FF.
  
• 
  Consider how to use a FF Hint Track to dynamically move DRC in FF to DRC in ES.
  

Agreed action items:

• 
  Jointly approve new WD of this document
  
• 
  Workplan from Audio which contains “study points” for audio experts.
  
  • 
    Investigate tracked-changes comment in WD document
    
  • 
    Address minimum “redundant metadata” that is to be both FF and ES.
    
  • 
    Consider software that could use hint track to automatically take FF level information into ES.
    

5.