You're welcome, Paul
And thanks for explaining further. Based on that reply, I think I can offer enough info to get you started.
You have already seen the list of OS X applications that can capture, encode, and deliver video streams from your iSight. Now you need to decide exactly what you need to do so you can select the correct software.
Once you know what you want to do, your next decision needs to be one of which platform and application you will use. This must be YOUR decision. Only YOU know exactly what you want to do, how much compromise you can accept, how experienced and comfortable you are with the technologies involved in embedded video streaming, how much research, study, and results testing you are willing or have time to undertake, etc.
If you decide to use Windows to stream live video via PowerPoint and some software for serving a wmv format video, you will need help from the technical documentation for those applications or from some other person. I have not used Windows for more than eight years, and I do not know the answers to those questions. You might find
some help for these questions in one of the
MacBook Pro Discussions fora, but my guess is that you would do better in a forum dedicated to using the software application(s) you select for use. In fact, posting your questions in forums about candidate software applications that you are considering may provide useful input to your decision as to which software you ultimately select.
Any Mac solution using OS X and applications like Keynote that run under OS X would use Mac's QuickTime technology for video. If PowerPoint cannot accept QuickTime video streams, you might decide to consider an alternative application like Keynote or even streaming your video to an HTML-based web site and displaying your video via your browser.
If you want the most powerful and flexible OS X applications for streaming your video, see Apple's QuickTime tutorials, such this one about
Delivery and this one about
Including QuickTime In A Web Page, for an overview of how to use
QuickTime Streaming Server (QTSS) to capture and encode your video. For help setting preferences, destinations and other settings, see "Help" in the QTSS or QuickTime Broadcaster (QTB) applications.
Although I have no way of knowing, I would bet that Steve Jobs' video streaming was done with QTSS, QTB, and some VERY smart streaming video specialists. If these pro-level QT applications are too complex for you, you may want to consider simpler approaches such as using
ImageCaster, <a href="http://www.evological.com/evocam.html"">EvoCam</a>, or one of the other webcam applications to display your video stream in a web page.
I am not sure I understand your final comments:
<blockquote style="width: 85%; margin: auto; padding -left: 35px; border: 1px solid #000; background: #efefef;">On windows vista/xp you cant right click the link of the video file and change the preferences of the video to a url rather then a destination on your HD... it seems that on a Mac you can't do this. I might be wrong,...
If understand correctly, you want to know how to change the destination of your video stream using a Mac. The destination is a function controlled by the application rather than by which hardware platform you are using. For instance, in QTB for Mac, you click the "Network" tab in the QTBs main window, set "Manual Unicast" in the "Transmission:" choices bar, and then provide the destination address in the dialog window. Therefore, my answer to you is that you
can select the destination for the video stream on your Mac if you run software that offers the option of selecting the destination. Entering "network" in
QTB >Help returns the list of all topics for functions provided via QTB's Network tab.
Please let us know if you need any further iSight information before you can mark your question "Answered."
Cheers,
Jim
Mac OS X (10.4.10)  G5 DP 1.8  External iSight