<html>
<font size=3>This is true, we used one for a conference from BU at one
point and the resolution was not good. By the time all the
converting back and forth went on, it was hard to see details.
<br>
Jim Farrar<br>
<br>
<br>
At 12:31 PM 7/5/00 -0500, Bob Olson wrote:<br>
<blockquote type=cite cite>The problem with scan converting video of
something you want to actually<br>
read is resolution -- the h261 that will come out the vic driven by
the<br>
converter will be only 352x288 pixels, with reduced color quality as
well.<br>
The vnc solution will give you the full resolution and color depth.<br>
<br>
--bob<br>
<br>
On Wed, 5 Jul 2000, Allan Kenneth Spale wrote:<br>
<br>
> Michael,<br>
> <br>
> During the June Chatauqua, EVL displayed a video stream that ported
video <br>
> directly from a Cray to the video capture card. We did not
have any<br>
> serious trouble related to capturing and maintaining the video
stream.<br>
> The video quality was good, too. Maybe someone else at EVL
would<br>
> be able to comment more on this subject as I am only a node
operator.<br>
> <br>
> <br>
> Allan <br>
> <br>
> On Tue, 4 Jul 2000, Michael Grobe wrote:<br>
> <br>
> > hello:<br>
> > <br>
> > the various complexities of using VNC for screen-sharing demos
<br>
> > got me to thinking about alternatives.<br>
> > <br>
> > has anyone tried using scan converters for these demos?<br>
> > that is, in more detail:<br>
> > <br>
> > use a scan converter to take the VGA signal
from a laptop<br>
> > or workstation and convert it to composite
video for the<br>
> > video capture card for normal broadcast over
the grid.<br>
> > <br>
> > this would be MUCH simpler than the VNC approach (especially
the<br>
> > bi-level VNC approach invented by eric). i suppose it
would<br>
> > be considerably lower resolution, so it would be unusable
for<br>
> > some demos or PPT slide sets.<br>
> > <br>
> > i have found a cheap scan converter...well, relatively
cheap...<br>
> > $495 list price...i have a call in to see about an edu
discount.<br>
> > for similar quality (VSC-75 or VSC-100) the Extron edu price
<br>
> > appears to be about $1000.<br>
> > <br>
> > the product is the CORIOscan Select from tvone.com
(<a href="http://www.tvone.com/" eudora="autourl">www.tvone.com</a>).<br>
> > (up to 1024x768, composite, s-video, and RGB output, ntsc and
pal <br>
> > switchable, scan rates up to 100KHz, etc.)<br>
> > <br>
> > if nothing else this MIGHT make a reasonable backup tool for
VNC<br>
> > and dPPT, if it isn't good enough for general use.<br>
> > <br>
> > :michael grobe<br>
> > <br>
> <br>
> </font></blockquote></html>