Organization of video broadcast

I invite the community to share their experience in the field of video broadcasts.
Maybe it will turn out to create something like mini benefits.
The scheme is simple: someone asks a question, and the knowledgeable answer is to share information. And all this falls into the topic.
I'll try to start from what I learned from tips and answers on the forums.

If I don't have a server, how can I broadcast video from my webcam?
- the easiest way to use the services smotri.com , rutube.ru or yatv.ru
- using Moonware webcamXP Pro
- using VLC: Camera → FireWire → VLC → Lan → VLC © amcdm

How to organize a full broadcast through my server?
- Based on Adobe: WEB-camera → Adobe Flash Media Encoder → Adobe FMS → Adobe Flash application. © Min0r
- Based on Microsoft: WEB-camera → Windows Media Encoder → Windows Media Services → ASF (WMV) for Microsoft Silverlight or Windows Media Player © TMC
- Based on Microsoft: WebCamera / Video file → Expression Encoder → IIS media services / WMS → Flash / Silverlight / Windows Media © gaploid
- Based on Open Source: WEB-camera → Adobe Flash application → Red5 → Adobe Flash application. © khromoff
- Wowza Media Server © mykir and xternal
Price : $ 995 per server, or a subscription of $ 65 per month. Up to 10 simultaneous connections (for development) - for free.
- ffserver , camserv , webcam-server © JohnMcClane
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Which of the above servers is less load on the system?
- Flash Media Server 2/3 and Wowza Media Server without special differences. © mykir

How does the video broadcast work where the picture quality is determined by the speed of the user's channel?
- Video is encoded in parallel with different bitrates. In the protocol, as far as I remember, there are commands for switching bitrates on the fly. Accordingly, it is controlled simultaneously by the player and the navy. © TMC

How to be if multiple cameras?
- Based on Red5 . © khromoff

What software can I use for video conferencing?
- Adobe Connect
- Windows Live meeting © tikondrus

What are the channel requirements for video conferencing?
-?

And what if I want to broadcast a video that is already stored on a computer, with converting on the fly?
- VLC , Live555 Media Server or Apple's Darwin Streaming Server . © ilya_smelykh
- Playlists in Windows Media Services. They require conversion of all files to WMV. Allow you to set up playlists in time very flexibly. © TMC

How to organize VoIP telephony for technical support from the site?
-?

What are the hardware video broadcast solutions?
- Tandberg , Polycom , Cisco © unconnected

Which of the webcamera advise when working with low light?
axis p1311 - light sensitivity 0.7 lux

Several presentations on this topic. © itjobby

Ask your questions or share information about how you organized the broadcast.

UPD: updated the topic with new answers and prices for server solutions 10.08.2009