Video Conferencing with DirectX 9 and C#

Can anyone point me to a good tutorial on how to do Video conferencing? I heard someone mention that you could do it with DirectX?
arcarsonAsked:
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vo1dCommented:
http://www.microsoft.com/windows/NetMeeting/Home/default.ASP
there you can find the sdk3 of netmeeting and all related stuff concerning developing own apps.
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vo1dCommented:
the only great working application, which allows videoconferencing, is netmeeting. mostly all other apps uses the activex object of it.
so what you can do is implementing that activex object in your application.
if you wanna do it yourself, you can grab the videosignal with directshow from your webcam and pass the data through the G.722 codec, which is made for videoconferencing(netmeeting is using this codec too).
after encoding the video/audiostream, pass the data with directplay through the network to the other client, decode the data with G.722, and show it on the screen.
at least the question is, do you wanna make videoconferencing through the internet or over a lan?
if you only wanna use it over a lan,  maybe you can use other codecs, cause you have a higher bandwith.
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vo1d
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arcarsonAuthor Commented:
I'd like to do it over the internet. Where can I get the ActiveX object of Netmeeting at least that's a place to start. And is this a redistributeable object?
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