conferencexp a versatile video conferencing tool for the performing arts josé feghali texas...
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ConferenceXP
A versatile video conferencing tool for the
Performing ArtsJosé Feghali
Texas Christian UniversitySchool of Music
ConferenceXP – a brief history
• Project began at Microsoft Research in 2001
• Successful deployment for distance learning, Spring 2003
• First 4-way distance learning deployment Autumn 2004
• Center for Collaborative Technologies at UW established, July 2007
• August 2008, CXP 5.0 released
TCU/RAM Masterclass 2007
2008 Developments
• CXP 4 - audio limited to 22 Kbps• Uncompressed audio – possible?• It is all about buffers!• Sync Bonus = (compressed) video
with uncompressed audio, any audio source
• Up to 16 bits, 48 KHz stereo (and above?)
• Quality V/C ~ 3 Mbps (1.5 Mbps video)
• Uncompressed video and audio ~ DVTS
Proof of concept
>>>
CXP 5 AdvancedSettings
>>>
Venue Service
The Good • Free for educational and research use• Video/Audio independence with sync
adjust• Webcam, DV video or other video input• Internal and external audio• Low latency• Multicast, unicast, reflector service• Multipoint conferencing (bandwidth?)
with multiple compression levels• Multi-camera possibilities from one
location
• Security (venue password, encryption)• Nat/Firewall transversal, diagnostics• Ability to stream CXP session live (WM)• Archive service = recording + playback• “Bonus” features include chat,
presentation, whiteboard, screen sharing, video playback
• Intel Mac (iSight drivers from boot camp)
• Wiki, forums, listserver
The Good (cont.)
The Bad
• No DV audio (yet…) ** STOP PRESS**• Compressed DV video requires WMP10• VISTA use requires installing CODEC - may
not work with compressed DV video• Accurate testing = use two computers• High compression = high CPU usage
Usage Notes and Future
• Some firewire devices work, others don’t
• Metronome method for synching• .NET framework – archive requires
SQL• Firewall ports• DV video – lower than 720x480
resolution• High bandwidth = switch off FEC• Future plans: HD, multi-channel
audio (?), venue redesign – CXP 5.1 in March 2009
Links
• Downloads: http://cct.cs.washington.edu
• Source code:
http://www.codeplex.com/ConferenceXP
• Forums: http://forums.microsoft.com/MSR/
• Wiki: http://cct.cs.washington.edu/project-wiki/
• Projects:
http://cct.cs.washington.edu/community/
• Listserver: cct-announce-
Paul Cortese – Assistant to the DirectorJuan Guillermo Vizcarra
THANKS!
• Fred Videon - CCT, U of W• Jason Van Eaton - Microsoft• Justin Trieger - NWS• Brian Shepard - USC• Richard Gipson - TCU School of Music• Paul Cortese - TCU School of Music