International organisation for standardisation organisation internationale de normalisation

31.2.3Action Points

32Liaison

Cf. Liaison output.

33Resolutions of Systems

Cf. WG11 resolution.

34Action Plan

N°	What	Who	When	Status	Trace

7. 
   – Video report
   

Source: Jens Ohm and Gary Sullivan, Chairs

1MPEG-4 Part 2 Video

The video and requirements subgroups received a request for new levels 7 (matching 1080/30p), 8 (1080/60p) and 9 (1080/120p) for Simple Profile and levels 6 (720/60p) as well as 7-9 for Advanced Simple Profile. The NB of US also gave support for levels 7&8 in Simple, whereas the engagement for the remaining requested profiles was less evident. Video and Requirements requested for more evidence about the use cases, as well as more company support before any action could be taken in these matters.

Two more issues were raised on 14496-2, which are

• 
  Divergence between software and text in vertical field MV conversion. Probably, most current implementations have followed the software definition on this (diverging from the text part in both Momusys and Microsoft software), which is also implemented in the current conformance streams. The recommendation is to change the text according to the software operation.
  
• 
  Clarification of scaling in quarter-pel MC where the operation is currently only expressed as textual description; it is recommended to add pseudo code similar to the style in other parts of the text.
  

A defect report was issued on this to allow further study on the best solutions, and further improve the proposed text changes when a corrigendum is issued.
Another defect report was issued on 14496-4 video conformance, where a report was made about illegal level definitions in three Simple Profile streams. In addition, it is planned to perform an action of re-structuring the video conformance (organize the sets of streams by profiles/levels instead of the number of amendment by which they were first defined). A document which formulates some first ideas about such a possible new structure was issued (N10537).
Documents reviewed:

m16284	MPEG4 Simple Profile, Levels 7, 8, 9 and MPEG4 Advanced Simple Profile, Levels 6, 7, 8, 9	Madhukar Budagavi Minhua Zhou
m16285	Proposed text changes for ISO/IEC 14496-2 (MPEG-4 part 2)	Minhua Zhou Madhukar Budagavi
m16291	USNB Contribution: Request for new levels	Andy Tescher for USNB

Documents approved:

No.	Title	TBP	Available
10534	Defect Report on ISO/IEC 14496-2:2004	N	09/04/24
10536	Defect Report on ISO/IEC 14496-4:2004	N	09/04/24
10537	First Ideas on New MPEG-4 Video Bitstream Repository Structure	N	09/04/24