The equipment needed for video conferencing is as follows: a display device, audio equipment, a network connection and a codec device. A monitor or projector could be used as a display device. A speaker or microphone could be used as audio equipment.
The codec is considered the brain or heart of the video conferencing system. The codec compresses the video for transmission and simultaneously decompresses the incoming video.
A stable broadband internet serves as the network connection; it transmits the data between the video systems communicating through video conferencing. Video conferencing can be done using both simple webcams and high definition cameras.