how to use video conferencing

Videoconferencing uses telecommunications of audio and video to bring people at different sites together for a meeting. This can be as simple multi-point with more than one person in large rooms at different sites. Besides the auas a conversation between two people in private offices point-to-point or involve several sidio and visual transmission of meeting activities, videoconferencing can be used to share documents, computer-displayed information, and whiteboards.

It’s useful because we want to talk (allot) and makes it easier then talking over the telephone

Or email (which is rubbish) the core technology used in a videoconferencing system is digitally compressed of audio and video streams in real time. The hardware or software that performs compression is called a codec (coder or decoder). The Compression rates of up to 1:500 can be achieved. The resulting digital stream of 1s and 0s is subdivided into labeled packages which are then transmitted through a digital network of some kind (usually ISDN). The use of audio modems in the transmission line allow for the use of POTS, or the Plain boring Old Telephone System, in some low-speed applications, such as because they convert the digital pulses to/from analog waves in the audio spectrum range.

The other components required for a videoconferencing system include:

• Video input : a video camera or a webcam
• Video output: requires a computer ,TV or projector
• Audio input: microphones CD/DVD player, cassette player, or any other source of PreAmp audio outlet.
• Audio output: usually loudspeakers associated with the display device or telephone
• Data transfer: analog or digital telephone network,  LAN or internet
• There are basically two kinds of videoconferencing systems

A simple one-to-one meeting over a long distance can be accomplished with a small video camera attached to a computer and a headset with attached microphone. Both parties in a conference need to be connected via the Internet using one of several available services like SKYPE or Adobe Connect, or NetMeeting. Some of these services are free while others charge a ridiculous fee.

 Check with the service to see what the limitations are before arranging the conference. For example, SKYPE is good for one-to-one conferencing if you want to retain the video aspect. You can have up to 15 callers in a SKYPE call, but will lose the video with the third caller. SKYPE is free. Adobe Connect will allow multiple callers with video, but there is a charge to use Adobe Connect. NetMeeting is another free service that has specific features and limits as well.

Explore web-based options to find out what the best solution is for your small or one-to-one conference is. Start with the IT department at your school to see what is available internally before trying other outside options. All parties in a conference will need to have web cameras, speakers and microphones. Headsets work best in areas where noise will bother others.
 

Telepresence systems have cameras located in the screens that reduce the amount of parallax (I’m sure its stands for something dam scientists making up words) observed by the users. This issue is also being addressed through research that generates a synthetic image with eye contact using stereo reconstruction.
Bell Communications Research owns a patent for eye-to-eye video conferencing using rear projection screens with a camera behind it. This technique eliminates the need for special cameras or image processing