MPEGIF > Interoperability > Round 6

MPEGIF Interoperability WG

MPEGIF Interoperability Working Group has the mandate to organize and execute interoperability tests for current and emerging MPEG standards. The group has completed five rounds of testing, and the sixth round is currently underway (see summary below). Previous test rounds have been based mostly on file exchange, with encoding companies generating and posting bitstream and MP4 files, and decoding companies testing the files and reporting on the results. The group provides a collaborative environment in which companies may discover and correct interoperability problems before products go to market.

For a brief history of MPEGIF Interoperability Working Group (and its relationship to the new MPEGIF Logo Qualification Program), please view the summary presentation .




Summary of 6th Interoperability Test Round

The latest round of testing includes support for AVC/H.264 visual, High Efficiency AAC Audio, and AAC BSAC. The test round began in mid October 2004, and is expected to conclude in December 2004. A face-to-face test event will take place in December, jointly organized between ISMA, MPEGIF, and IMTC.

A summary is presented here:


1. Participating companies

Currently, there are 27 companies participating in the 6th round. The following companies have given permission to be listed on this public summary page:
1. Ahead Software
2. Apple Computer
3. ATEME
4. Coding Technologies
5. Comverse
6. dicas digital image coding GmbH
7. Envivio
8. Fraunhofer IIS
9. Hantro
10. MainConcept AG
11. NVIDIA
12. OnTimetek, Inc.
13. Pace Soft Silicon
14. PacketVideo Corp.
15. Philips
16. Pixtree Technologies
17. Samsung Electronics Co., Ltd.
18. Sorenson Media, Inc.
19. VideoSoft


2. Profiles for file exchange test

1. Audio
• AAC
• High Efficiency AAC
• AAC BSAC
2. Visual
• AVC Main
• AVC Baseline


3. Additional Profiles/Features under consideration
• AVC High Profile
• AVC Main+Baseline Intersection
• Parametric Stereo
• AAC Multichannel
• MPEG2-TS
• RTP Transport
  
  (Company interest and changes to the test plan are being evaluated for these)


4. Test conditions for streaming test
1. Visual - covering AVC Main and Baseline Profiles
   • Reference Text: 14496-10 3rd Edition (W6540)
   • Reference Software for encoding and decoding: JM9.0
   • Common Sequence: Marty Stouffer sequences in MPEGIF interop ftp site
   
   

   Profiles	Resolutions	Bitrate with frame set
   Main	SD (601) and CIF	4.8 Mbps at 30 fps
   		1.5 Mpbs, 2 Mbps at 30 fps
   August 30, 2002	CIF and QCIF	256 kbps, 384 kbps at 15 fps 384 kbps, 512 kbps, 768 kbps at 15 fps
   		64 kbps, 128 kbps, 256 kbps at 15 fps

   
   
   
2. Audio
   • Reference Text: 14496-3 3rd Edition (W6677)
   • Reference Software for encoding and decoding: TBD
   • Common Sequence: Marty Stouffer sequences in MPEGIF interop ftp site
   
   

   Profiles	# of Channels	Bitrate
   HE-AAC	Stereo	32, 48, 96 kbps
   	Mono	24, 32 kbps



5. Test schedule



DATE	PLAN	DETAIL
October 21, 2004	CONFERENCE CALL	Initial planning call
October 25, 2004	POSTING BEGINS	Companies have 2 weeks to post bitstreams and MP4 files
November 8, 2004	TESTING BEGINS	Companies have 2 weeks to do initial testing and report a first round of results.
November 19, 2004	INITIAL RESULTS REPORTED	Deadline for companies to report initial results in the test round
November 22, 2004	CORRECTION PERIOD BEGINS	Companies communicate to correct problems, retesting and reposting files as needed. By the end of this period, we expect general interoperability, with few if any problems remaining.
December 6-9, 2004	ISMA/MPEGIF/IMTC JOINT EVENT	This event gives companies a chance to work out any existing file exchange problems with face-to-face communication. For interested companies, AVC and H.E. AAC transport could be tested.
December 17, 2004	CORRECTION PERIOD ENDS	Test round is officially over. Interoperability WG will prepare a summary of participation and results. Participating companies are eligible to complete Logo Qualification (i.e. their interop requirement is fulfilled)





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