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OptIPuter

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Audio interleaved. DVCPRO HD 100Mb 300ms. Audio interleaved. HDSDI 1. ... No audio. University of Illinois at Chicago. Marketing Categories. Broadcast. HDSDI ... – PowerPoint PPT presentation

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Title: OptIPuter


1
  • OptIPuter
  • Teleconferencing Next Steps
  • Dan Sandin
  • Jan 2007

2
An Embarrassment of Riches
  • HDV 25Mb 1 sec
  • Audio interleaved
  • DVCPRO HD 100Mb 300ms
  • Audio interleaved
  • HDSDI 1.5Gb
  • Audio interleaved
  • Y U V HD .8Gb
  • Audio separate
  • Varrier Stereo Video 225Mb
  • Audio separate
  • GigE camera .8Gb
  • No audio

3
Marketing Categories
  • Broadcast
  • HDSDI
  • Highest quality, most expensive, low Q/
  • Highly standardized, inflexible
  • Prosumer
  • HDV, DVCPRO
  • Medium to high quality best Q/
  • Quite standardized, inflexible
  • Industrial
  • Y U V, Varrier Stereo, GigE
  • Large range of Q and
  • Quite standardized, very flexible

4
Organizations
  • HDV 25Mb 1 sec
  • everybody
  • DVCPRO HD 100Mb 300ms
  • qvidium calit2
  • HDSDI 1.5Gb
  • research channel UltraGrid Calit2
  • Y U V HD .8Gb
  • EVL UltraGrid
  • Varrier Stereo Video 225Mb
  • EVL Calit2
  • GiGE camera .8Gb
  • SARA EVL Calit2

5
Bandwidth
  • HDV 25Mb 1 sec
  • Audio interleaved
  • DVCPRO HD 100Mb 300ms
  • Audio interleaved
  • HDSDI 1.5Gb
  • Audio interleaved
  • Y U V HD .8Gb
  • Audio separate
  • Varrier Stereo Video 225Mb
  • Audio separate
  • GigE camera .8Gb
  • No audio

6
Audio
  • HDV 25Mb 1 sec
  • Audio interleaved
  • DVCPRO HD 100Mb 300ms
  • Audio interleaved
  • HDSDI 1.5Gb
  • Audio interleaved
  • Y U V HD .8Gb
  • Audio separate
  • Varrier Stereo Video 225Mb
  • Audio separate
  • GigE camera .8Gb
  • No audio

7
Latency One-Way Transmission Times
  • HDV 25Mb 1 sec
  • Audio interleaved
  • DVCPRO HD 100Mb 300ms
  • Audio interleaved
  • HDSDI 1.5Gb
  • Audio interleaved
  • Y U V HD .8Gb
  • Audio separate
  • Varrier Stereo Video 225Mb
  • Audio separate
  • GigE camera .8Gb
  • No audio

8
Latency Why So Late
  • Every frame takes 33 ms
  • Every piece of hardware and every software module
    wants a 2 or 3 frame buffer
  • For us, it is almost never the network
  • We need to change that so it is the network

9
Compression and Resolution or Quality
  • HDV 25Mb 1 sec
  • MPEG long GOP, low Q
  • DVCPRO HD 100Mb 300ms
  • JPEG-like better Q
  • HDSDI 1.5Gb
  • None best Q largely depends on camera
  • Y U V HD .8Gb
  • None best Q, largely depends on camera
  • Varrier Stereo Video 225Mb
  • None SD but in stereo
  • GigE camera .8Gb
  • None camera has Q problems

10
Compression and Resolution or Quality
  • Uncompressed talking heads HD at 1.5GB is a
    ridiculous waste of resources
  • Except for broadcast production
  • Except for science data
  • Except for here? or maybe a TV studio, you have
    never seen uncompressed HD
  • Compression can be done in less than a frame
  • NTT 4K Jpeg 2000
  • spectacular quality !

11
SAGE and Teleconferencing
  • SAGE Visual casting supports YUV and RGB video
  • Calit2 and EVL will make a DVCPRO HD to SAGE
    converter
  • Note need to buy xmit box and receive software
    from Qvidum
  • UltraGrid and Research Channel have expressed
    interest in doing conversion routines to SAGE
    Visual Casting

12
SAGE and Teleconferencing
  • SAGE Visual casting supports YUV and RGB video

13
SAGE and TeleconferencingSupport of several
systems
  • Except for SAGE Visual Casting, a
    receiver box for each source will be used
  • Potentially support a large number of video
    compression standards

14
Audio Afterthoughts
  • Echo cancellation can be accomplished with
    AccuMic PC
  • Limitations

15
Audio Afterthoughts
  • SAGE has to develop an audio standard for visual
    casting

16
Persistent setupfirst pass
  • DVCPRO HD using Qvidium boxes
  • CALIT2 UCSD, Calit2 UCI, EVL
  • AccuMic Echo calculation
  • Mono simple PCM audio

17
Near Future
  • HDMI camera and capture card
  • Multi-channel audio with each SAGE window
  • Audio localization with each window

18
Teleconferencing
  • Discussion
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