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<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=218560923-14072004>I'm not sure if anyone's responded
yet:</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=218560923-14072004></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=218560923-14072004>Multicasting within a LAN segment, or inside a
company/campus is no problem (if you have buy-in from the network
administrators), but not over the Web. Basically, there are a finite
number of multicast addresses available, and people don't want to tie up Web
backbone moving random multicast everywhere, so ISPs block it. You would
use unicast (point-to-point) from a server on the Web, then individuals
connecting to it could rebroadcast (multicast) within their local LAN segments
if they desired.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=218560923-14072004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=218560923-14072004>(In
VLC this is really easy. You launch it, select File -- Open Network
Stream. Select what it is you are trying to connect to, then select
"Stream output" in the bottom of the Open window and you can rebroadcast the
stream, including choosing to multicast it locally.)</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=218560923-14072004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=218560923-14072004>If you
are trying to redistribute live theater locally, say on a campus, you connect
your cameras to framegrabber cards in a PC. You launch VLC, set to stream
the input from the cameras. You may choose to use SAP/SLP to "announce"
the program contents. If you have routers connecting the buildings, or
providing point-to-point dedicated wide area network connections, you make sure
to enable the individual routers to forward multicast.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=218560923-14072004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=218560923-14072004>A good
start, for someone who is a techie at heart, is to pop up to Cisco's site.
Do a search for "IP multicast overview", and you'll get a couple of decent
technology overviews. (Yes, I know they're Cisco oriented, but they do
have decent technical descriptions, with examples.)</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=218560923-14072004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=218560923-14072004>So,
from a VLC perspective, one approach is:</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=218560923-14072004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=218560923-14072004>Camera
-- framegrabber_in_pc -- VLC_TX_using_point_to_point -----The Web ---
VLC_RX_client_doing_a_local_multicast_of_the_RX_stream --</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=218560923-14072004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=218560923-14072004>with
another:</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=218560923-14072004><SPAN
class=218560923-14072004>Camera -- framegrabber_in_pc -- VLC_TX_using_multicast
--
multicast_distributed_internally_with_properly_configured_routers_and_switches
-- multiple_VLC_RX_clients</SPAN></SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2></FONT><BR></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> vlc-bounce@videolan.org
[mailto:vlc-bounce@videolan.org] <B>On Behalf Of </B>Neil Kalvin<BR><B>Sent:</B>
Monday, July 12, 2004 8:30 PM<BR><B>To:</B> vlc@videolan.org<BR><B>Subject:</B>
[vlc] Hi i am trying to setup a Streaming solution for a non profit Theater in
santa monica.<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Hi my name is <SPAN
class=SpellE><SPAN class=GramE>neil</SPAN></SPAN> Kalvin and I am setting up
some live theatre on the web. I figured this is a great <SPAN
class=SpellE>opertunity</SPAN> for the arts on the web and to spread are
message. Here are some questions. 1. I have a server with about 500gig’s a month
of <SPAN class=SpellE>bandwith</SPAN>. 2. <SPAN class=GramE>what</SPAN> do I
need to do to setup a multicast server or network. Also I was wondering if this
<SPAN class=SpellE>softwhere</SPAN> and such supports P2P so that it does not
use up all my <SPAN class=SpellE>bandwith</SPAN> and such. Please help I am a
little lost but the right push in a direction would greatly
help.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-no-proof: yes">Neil
Kalvin<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-no-proof: yes">Web Manager
OSC<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-no-proof: yes"><A
href="mailto:Neil@OuterSpaceCow.com"><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'">Neil@OuterSpaceCow.com</SPAN></FONT></A></SPAN></FONT><SPAN
style="mso-no-proof: yes"><o:p></o:p></SPAN></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-no-proof: yes">Phone
310.597.4115</SPAN></FONT><SPAN style="mso-no-proof: yes"><o:p></o:p></SPAN></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P></DIV></BODY></HTML>