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ISO/IEC 14496-12:2012/DAM 3 (SC 29 N 13725)

Part 12: ISO base media file format AMENDMENT 3: Enhanced audio support and other improvements

DAM (2013-xx-xx)

4. MPEG-4 AVC File Format (14496-15)

1. Topics

   1. ISO/IEC 14496-15:2010 AMD 2 Carriage of HEVC

This amendment of ISO/IEC 14496-15 specifies the storage format for HEVC (ISO/IEC 23008-2) video streams.

The storage of HEVC content uses the existing capabilities of the ISO base media file format but also defines extensions to support the following features of the HEVC codec.

• 
  Adaptation Parameter sets:
  decoding parameters that are supposed to change more frequently than coding parameters in picture parameter sets.
  
• 
  Temporal scalability sample grouping:
  a structuring and grouping mechanism to indicate the association of access units with different hierarchy levels of temporal scalability.
  

Temporal layer access sample grouping: a structuring and grouping mechanism to indicate the identification of access units as temporal layer access (TLA) samples.

2. ISO/IEC 14496-15:2013 AMD 1 Enhanced carriage of HEVC and support of MVC with depth information

This amendment specifies the storage of video bitstreams consisting of multiple views and the associated depth, encoded based on Annex I of ISO/IEC 14496-10. The design is based on the MVC file format, which is specified in Clause 7 of ISO/IEC 14496-15, in a backwards-compatible manner. In the design, storage of the texture and depth of a particular view in either separate tracks or the same track is supported. The design also includes the signalling of various indications, such as the presence of texture and/or depth for each view, as well as whether the texture or depth component or both of a view is required for the presentation of another view. The amendment also adds the signaling (using HEVC video descriptor) to indicate use of HEVC low-delay coding mode in each access unit where the STD buffer management is performed using the HEVC HRD parameters

2. Contributions

Number	Session	Title	Source	Dispositions
m31207	File Format	HEVC file format: A bug fix on sub-parameters for the MIME type ‘Codecs’ parameter	Y.-K. Wang (Qualcomm), D. Singer (Apple)	Accepted N13959
m31212	File Format	HEVC file format: On random access signalling	Y.-K. Wang (Qualcomm)	Accepted N13959
m31213	File Format	File format for HEVC multi-layer extensions	Y.-K. Wang, A. K. Ramasubramonian, Y. Chen, Hendry (Qualcomm),	Accepted N13960
m31285	File Format	Comments on WD of 14496-15:2013 AMD2	Mitsuhiro Hirabayashi, Sally Hattori	Accepted N13960
m31372	File Format	File format options for HEVC coded still images	Vinod Kumar Malamal Vadakital, Miska M. Hannuksela, Jani Lainema	Noted
m31373	File Format	File format options for HEVC coded image sequences	Vinod Kumar Malamal Vadakital, Miska M. Hannuksela, Jani Lainema	Noted
m31375	File Format	Proposal for a new file format brand name for HEVC coded data	Vinod Kumar Malamal Vadakital, Miska M. Hannuksela	Accepted N13954
m31377	File Format	Constraints ignaling in ISOBMFF for image sequences	Vinod Kumar Malamal Vadakital, Miska M. Hannuksela, Jani Lainema	Noted
m31378	File Format	File format extensions for multi-layered HEVC coded sequences	Vinod Kumar Malamal Vadakital, Miska M. Hannuksela	Accepted N13960
m31395	File Format	Improvements to WD AMD2 of HEVC file format (14496-15)	Kenneth Andersson, Per Fröjdh (Ericsson)	Rejected
m31434	File Format	Improved whitepaper for 14496-15	David Singer	Noted
m31438	File Format	ISOBMFF Storage of Tiled HEVC Video	Jean Le Feuvre, Cyril Concolato, Franck Denoual, Frédéric Mazé, Eric Nassor	Accepted N13960
m31439	File Format	Inputs to WD of 14496-15 AMD2	Jean Le Feuvre, Cyril Concolato, Franck Denoual, Frédéric Mazé, Eric Nassor	Noted
m31442	File Format	On Independent HEVC Slices	Jean Le Feuvre, Cyril Concolato, Nael Ouedraogo, Franck Denoual, Frédéric Mazé, Eric Nassor	Noted

3.