[Videoconferencing] Auditorium room and AV upgrades - please read and respond
advax at triumf.ca
Tue Mar 5 17:19:26 PST 2013
Per my last message to the Videoconferencing list, the auditorium was
upgraded with new paint, chairs etc. and two new LCD monitors.
At time of writing, the right monitor can show a copy of what is on the
projector, while the left one can also show the Polycom H323 video or the
EVO (Seevogh) console using the wireless mouse and keyboard (currently in
the annexe for safekeeping).
We have installed but not commissioned a lecture capture system capable of
recording laptop VGA.
Right now, since ICFA, VGA from the Mac (if present) and laptop
is being converted to HDMI for the projector by a switch box in the
annexe. We will be able to accommodate new laptops with only HDMI output,
but we probably need a way to switch from the podium.
We intend further changes in April - a new projection screen, changing the
podium again, physically removing the stage, adding some fixed power
outlets in the floor. I would like to completely hide the wiring to the
podium in a conduit, like the wiring to the table in the boardroom or
ISAC2, which would probably entail fixing the podium location.
I would like to upgrade the Polycom H323 Viewstation to e.g. a Lifesize HD
unit similar to that in the Boardroom, also to upgrade the EVO system to
use the HD camera we have installed.
We will probably install a newer, hopefully less noisy, wireless lavalier
microphone which can be used for sound reinforcement.
We might get a handheld wireless microphone that can be passed around, if
there is interest.
The existing RealVideo streaming will probably be retired in favour of a
Sliverlight-based HD system similar to that used at UBC, if not in fact
contracting the actual system used at UBC. I am still trying to ascertain
what clients exactly are supported by that.
RealVideo supports Windows, Mac, Linux, maybe Solaris and in the past
Irix, with both buffered (delayed) streaming and on-demand downloads at a
couple of different bitrates. Multicast is supported allowing hundreds of
clients onsite. The system only supports one video stream, and
historically we have pointed an NTSC camera at the screen and cross-faded
to other cameras for views of the presenter or audience.
Mediasite supports Windows, Mac, and iOS for streaming using Microsoft's
Silverlight plugin (as used for the 2010 Olympics). It may or may not work
in Linux - Sandia's site works for me at home in Moonlight on CENTOS6, but
UBC's does not. They won't work in my SL5 for some reason.
Mediasite uses VGA capture to send HD video of a presentation, plus video
from one camera, giving a similar effect to Seevogh with screen capture
but with only 2 feeds not N. As in RealVideo, the feed is buffered so that
it is more resistant to jitter and packet loss than a realtime 2-way
conference like Seevogh or H323.
Mediasite supports professional quality archiving/indexing, OCR on
captured screenshots for later searching.
Mediasite is supposed to work directly on iPads.
Archived content is supposed to be available for Android tablets and
devices, and for Linux, Solaris etc. but that may depend on some
postprocessing, and a server configuration that supports non-Silverlight
navigation. To date, I have not seen working examples.
The Sandia archive worked for me at home in Moonlight 3.99. The quality
seemed very good even on a cable modem:
The Better Buildings archive works in a regular Web browser, but the video
would not play for me. Probably requires Silverlight 5:
The UBC site won't work for me at all. The error message states that it
requires Silverlight or HTML5.
However, Firefox supports HTML5 video (WEBM), and does not work. I have
not yet tried Chrome (which supports both WEBM and MP4 (H264 codec)
Comments ? Complaints ? Any other suggestions ?
Now is the time to speak up.
http://www.sonicfoundry.com/mediasite - Mediasite homepage
http://www.go-mono.com/moonlight/community.aspx - Moonlight/Silverlight samples
http://video.triumf.ca/ - existing RealMedia archive
http://videojs.com/ - HTML5 video intro
http://video-js.zencoder.com/oceans-clip.webm - WEBM video, plays directly in Firefox, Opera, Chrome
http://video-js.zencoder.com/oceans-clip.mp4 - MP4 video, plays directly in Chrome, IE9
Andrew Daviel, TRIUMF, Canada
Tel. +1 (604) 222-7376 (Pacific Time)
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