Watching video using VNC

Scott "The Axe" O'Bryan axeman "at" dwarf.org
Sat, 23 Mar 2002 15:53:11 +0000


That's part of it.  Really though, most TV Video cards use what they
call a direct overlay.  What this means is that the TV potion of the
card will send it's data directly to the video card without processor or
windows driver intervention.  Vnc cannot display what vnc doesn't know
exists.  Usually the screens contain a little used color for the
background (rGB value-wise) which will also allow other windows to be
displayed on top of the overlayed signal.

Even if vnc WAS able to see this signal, the stream would probably be
pretty slow.

-----Original Message-----
From: owner-vnc-list "at" uk.research.att.com
[mailto:owner-vnc-list "at" uk.research.att.com] On Behalf Of Christopher
Tesla
Sent: Thursday, March 21, 2002 7:45 AM
To: VNC Mailing List (E-mail)
Subject: Watching video using VNC

A recent question regarding using VNC to view streaming media caught my
eye.
I have a home network with several computers.  I regularly use VNC to
control
machines from other machines.  Everything is W2K.
 
I have a computer with a video-in card that is plugged into my TV
downstairs.
I can run the video software and watch TV on the computer.  Sometimes I
am
working upstairs on my laptop and would like to have that same function.
When
I use VNC to access the TV computer it works fine but the window that
shows
the video signal is black.
 
I am assuming that VNC has trouble updating the screen fast enough to
show the
video signal.  I am running everything as full-duplex 100Mb on a managed
switch, so the network is screaming.  Is there any way to speed up the
VNC
refresh so that I can watch real-time video on the laptop upstairs?
 
Just a fun question!

C-ya
Chris T
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