Hybrid Bit-stream Models
This presentation is the property of its rightful owner.
Sponsored Links
1 / 22

Hybrid Bit-stream Models (Sep 2007 Ottawa) PowerPoint PPT Presentation


  • 60 Views
  • Uploaded on
  • Presentation posted in: General

Hybrid Bit-stream Models (Sep 2007 Ottawa). Basic Ideas. Using information extracted from bit-stream data, it may be possible to develop better perceptual models in term of speed and accuracy. Many difficult problems (registration, transmission error) can be efficiently addressed. Advantages.

Download Presentation

Hybrid Bit-stream Models (Sep 2007 Ottawa)

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Hybrid bit stream models sep 2007 ottawa

Hybrid Bit-stream Models

(Sep 2007 Ottawa)


Hybrid bit stream models sep 2007 ottawa

Basic Ideas

  • Using information extracted from bit-stream data, it may be possible to develop better perceptual models in term of speed and accuracy.

  • Many difficult problems (registration, transmission error) can be efficiently addressed.


Hybrid bit stream models sep 2007 ottawa

Advantages

  • All transmission errors can be accurately identified along with their effects.

  • Registration is not a problem.

  • Fast and efficient.


Hybrid bit stream models sep 2007 ottawa

Generally agreed block-diagram (May 2007)


Hybrid bit stream models sep 2007 ottawa

Presentations

  • NTT (3)

  • Telchemy


Hybrid bit stream models sep 2007 ottawa

Models

  • Hybrid (PVS+bit stream info /FR/RR)

  • PNAMS


Hybrid bit stream models sep 2007 ottawa

Inputs to the model

  • Text file (Hybrid)

    • Tekronix products(maybe), NTT(?)

  • Raw bit stream data (Bitstream/Hybrid)

    • Codecs: H.264, MPEG2

    • Bit stream data format:

    • Procedure to address unrecognizable bit-stream data by some proponents:


Hybrid bit stream models sep 2007 ottawa

Summary of Decisions

2007/9/13


Hybrid bit stream models sep 2007 ottawa

Inputs to the model

  • Text file (Hybrid)

  • Raw bit stream data (Bitstream/Hybrid)


Hybrid bit stream models sep 2007 ottawa

Scope

  • Two formats

    • QVGA/VGA

    • SD/HD


Hybrid bit stream models sep 2007 ottawa

Codecs & transport systems

  • Codecs: H.264, MPEG2, MPEG4-Part2, VC1(?)

  • Transport systems

    • H.264-RTP

    • H.264-MPEG2TS

    • MPEG2-TS (MPEG2 or H.264)

    • VC1-RTP (?)

    • MPEG4 multiplexing

  • Note: We need programs which produce and analyze bit-streams.


Hybrid bit stream models sep 2007 ottawa

Subjective Test

  • ACR w/ HRR (tentatively) for both QVGA/VGA and SD/HD

  • ILG does as little as possible, only what is necessary to ensure fairness for all proponents


Hybrid bit stream models sep 2007 ottawa

Test Conditions

  • Test condition and source pool.

    • The test conditions and source pool of MM will be used whenever it is possible.


Hybrid bit stream models sep 2007 ottawa

Model Types

  • Model types

    • Hybrid models (FR/RR/NR)

    • bitstream (PNAMS)


Hybrid bit stream models sep 2007 ottawa

Interested (as of May 2007)

  • Interested: IRCCyN, FT, DT, NEC, KDDI, NTT, Witbe, QualiDeo, Yonsei, Spirent, Ghent University, Verizon, BT, Psytechnics, Opticom, NTIA, Intel, Acreo


Hybrid bit stream models sep 2007 ottawa

Proponents

  • Hybrid (4)

    • NEC, Yonsei, SQ,OPTICOM,

  • Bitstream (2)

    • Telchemy, NTIA(?),

  • Both (5)

    • KDDI, NTT, BT, Psytechnics, Tektronix(A+B?),

  • Unknown

    • FT(?), DT(?), Witbe(?), QualiDeo(?), Ghent University(?), Toyama(?)


Hybrid bit stream models sep 2007 ottawa

Proponents & ILGs

  • Proponets(?) A:Hybrid, B:Bitstream, C: both

  • 1: text 2:bit stream data,3:don’t konw

    • Psytechnics(C,3), KDDI(C,3), BT(C), NTT(C,2)

    • NEC(A,2), Yonsei(A,1), SQ(A,3), Opticom(A,1)

    • Telchemy(B,2), Tektronix(A+B?,2), NTIA(B?,2)

    • FT(?), DT(?), Witbe(?), QualiDeo(?), Ghent University(?), Toyama(?)

    • ILG: CRC(3), INTEL, Acreo, IRCCyN (2), Nortel

    • ?Ericsson(1)


Hybrid bit stream models sep 2007 ottawa

ILGs

  • CRC

  • INTEL

  • Acreo

  • IRCCyN

  • Nortel


Hybrid bit stream models sep 2007 ottawa

Hybrid Bit-stream Models

2007/9/14


Hybrid bit stream models sep 2007 ottawa

Decisions

  • (Decision) Monitoring point: at the receiver

  • (Decision) One reference decoder will be used for each codec.

  • (Decision) Capture file format & program for bit stream data

    • PCAP, www.wireshark.org (open source), tcpdump(?)

  • Reference decoder to ensure error-free bit stream compliance to the standard (open source) (final decision to be made soon)

    • Open-source H.264 codec (JM)

    • Open-source MPEG2 (FFMPEG)

    • Open-source MPEG4 (Momusys?)


Hybrid bit stream models sep 2007 ottawa

Decisions or Schedule

  • Representative streaming server

    • Dvbstream (?)

    • VLC (www.videolan.org)

    • Helix (Real Networks, open source)

    • Darwin (open source, www.opensource.apple.com)

    • Live555 (H.264 over RTP, MPEG2TS): open source

  • (Decision) One or two servers will be chosen after some study. Target date: Dec 31, 2007.

  • (Decision) Representative bit stream data: Nov. 30, 2007?


Hybrid bit stream models sep 2007 ottawa

Schedule

  • Proposal for IP analyzer: next VQEG meeting (est. Feb 2008)

  • Finalization of IP analyzer: 3 month after the next VQEG meeting

  • Finalization of testplan: next VQEG meeting (est. Feb 2008)

  • Submission of parsing programs to ILGs: three months after the final testplan

  • Model submission: Six months after the final testplan (est. Oct 2008)


  • Login