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RE: ConferenceXP in HD

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  • From: "Feghali, Jose" <>
  • To: Research Channel Working Group <>, "" <>
  • Subject: RE: ConferenceXP in HD
  • Date: Mon, 3 Jan 2011 00:54:42 -0600
  • Accept-language: en-US
  • Acceptlanguage: en-US
  • Comment: x-teamfeed-username-start()x-teamfeed-username-end

I have now uploaded some results and comments on experiments with HD webcams and ConferenceXP to the CXP wiki. Here is the link:


It appears that some configurations of “professional” HD cards might also work in HD, using intermediary compression and high-power CPUs. I am experimenting with VC-1 and MJPEG compression using Blackmagic HD-SDI gear and will report back on the wiki with the results. So far, latency hasn’t been as bad as with HDV, but not quite as good as I was hoping for.


Happy New Year, everyone!


José Feghali


From: Feghali, Jose
Sent: Friday, December 17, 2010 10:00 AM
To: Research Channel Working Group;
Subject: ConferenceXP in HD


In case there is any interest, wanted to let you know that I figured out how to use some of the  “HD” type Webcams with ConferenceXP. Taking the new Logitech C910 as an example, this is what I have gotten so far:


Max resolution for real-time VC:





Between ~20-40 Mbps (more testing is need to figure out the limits)



As good/better than uncompressed DV video


If anyone is interested in trying this out, let me know. I am trying to put together a list of cameras that work in this mode – so far, I have the Logitech C910 (their other HD webcams work the same way) and the Microsoft Lifecam Cinema.


Happy Holidays, everyone!






  • RE: ConferenceXP in HD, Feghali, Jose, 01/03/2011

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