Once digitally compressed, the video and audio data can be transmitted over a digital network. These data are a continuous wave of amplitudes and frequencies representing sounds, color shades, depth and brightness.Įnormous bandwidth would be required to transmit this data without compression, so codecs (hardware/software technology) compress and decompress the data into digital packets. The camera and microphone capture analog video and audio signals from a video conference. Network for data transfer – today most video conferencing is transmitted over a high-speed broadband Internet connection, using similar technology as VoIP (Voice over Internet Protocol) but LAN and occasionally ISDN connections are used.

Echo cancellation software – diminishes audio delays to enable real-time conversation.Codec – hardware or software-based coder-decoder technology that compresses analog video and audio data into digital packets and decompresses the data on the receiving end.

Audio output – professional speakers, headphones or laptop computer speakers.Video output – monitor, computer screen, television and/or projector.Audio input – microphones either centrally located or on individuals.Video input – 2 or more video cameras or web cams possibly digital projectors / whiteboards.

The core of a video conferencing system consists of elements that enable the capture and transfer of video images and audio sounds. You’ll need to know about video conferencing system components, data compression, data transfer, video conferencing standards and types of video conferencing to fully appreciate how video conferencing actually works.

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