Forums/A/V Equipment list

UNC Charlotte Lecture Capture Setup

Dave Hannan
posted this on October 8, 2010, 11:31 AM

Big thanks to Lee for sending us this information! We hope others find it useful.

This our Technology Enhanced Classroom package with a lecture capture upgrade.  In this room there are three cctv cameras and three camera floor pads. There is a pad at the podium and two for the whiteboard.  The camera at the podium captures lecturers that choose to use the technology and the other cameras capture those that choose to chalk n talk.

The lecture capture upgrade uses the following parts

Pictured Option:

Panasonic WV-CP284  CCTV Camera

CCTV Lens 6.0-60mm 1/3” CS

PanaVise 848-06 CCTV Camera Mount

Kramer VS-55V Composite Video Switch(capable of five cameras and the DB9 on the back is a contact closure control)

Grass Valley Canopus ADVC 110 (Converts composite video to firewire)

Trossen Robotics floor mat switch material

Vinyl Floor mat

Second option (not pictured)

Same as above but instead of the Kramer Switch and CCTV cameras

Cannon VC-C50i/VC-C50iR   PTZ Camera

The TEC classroom already has a Crestron control processor so we use that with the pads to switch the Cannon PTZ to a preset.





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Vladimir Zharinov
Institute of Certified Public Accountants in Russia

Great ! This installation gave me some new ideas. Thank you!

October 13, 2010, 2:47 PM
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Ed Tippin
University of South Florida

The ADVC 110 is a great box, and one that I'm using in our installations.  This keeps the A/D conversion off of the CPU, and there are no drivers required for either Mac or Windows.

The only quirk I have run into is that Panopto will not accept audio from the ADVC if you choose not to have video.  Evidently, the audio relies on the DV video stream.  You *can* select video without the audio, but not audio without the video.

In order to prevent problems, we took the RCA output of the 110 and piped it into the computer's line input.  In the event an instructor chooses no video, the audio defaults to the line input on the computer.  It is better to use the ADVC's audio in whenever possible, as there are no volume adjustments on the computer for DV audio.

Other than that quirk, the 110 is an excellent choice, and minimizes troubleshooting time.

November 4, 2010, 2:18 PM
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Albert Powell
Colorado State University, Division of Continuing Education

That's very helpful!  i want to drill down further....

What cards and connections to the computer are you using?  I'm getting the idea that a common connection set is similar to this:

- Lectern VGA output to the data projector (NOT just computer screen capture) > DataPath VGA capture card

- Video camera > ADVC 110, 55 or Osprey 200 card

- Audio from the lectern > mini-jack for mic input.

I also get the idea that when using remote recorder, you must prevent the capture computer from being turned off or hibernating, as that breaks the connection to the remote recorder software.

Ideas and specific configuration comments appreciated - also reply to me directly,  Thanks!

June 7, 2011, 4:15 PM
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Shivaji Samanta

I built a classroom based on the design shown above, with the Trossen Robotics switch mats hooked up to contact closure inputs on a Crestron MPC-25 controller.  Each time there is a contact closure, the camera (Sony EVID-70) moves to a matching preset PTZ setting and if none of the mats are stepped on, it points to the podium.  It works, but I am having problems with the switch mats.  The instructor may be standing on the mat and speaking, and the camera suddenly moves away to another location, or to the default location.  Any ideas on why this is happening?  The switch mats are covered with light carpets for protection, if that makes a difference.  I have ordered some professional switch mats (Vaddio) for testing, but they cost ten times as much as the Trossen mts, so I would like to get those to work if possible.

September 10, 2011, 11:08 PM
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Lee Perkins

Possibly has something to do with the camera since it is automatically switching back to default.  Try putting a vinyl covering on top of the pad. Then place carpet on top.  The only other thing I can think of is pad placement. You do not want them too close to each other or not too close to the doorways(since we are dealing with carpet).  We have noticed that the pads seem a little extra sensitive under carpet. I hope this is helpful

September 12, 2011, 10:33 AM
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Nick Dunne

Do you have any sessions that you can share? I would love to see what this looks like in action!

September 28, 2011, 9:30 PM
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Lee Perkins

None that i can make public at this time. I will get a demo together and get it posed as soon as i can

September 29, 2011, 8:24 AM
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Nick Dunne

How 'bout now?! :)

February 29, 2012, 6:31 PM
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Ryan Daly
University of California-Santa Barbara

Nice set up! I would also like to see a session. If you have one you can make public, do you mind posting it? Thanks!

November 12, 2013, 11:53 AM