Free Video Chat is a live visual exchange service, which is being offered by a lot of companies these days. It includes one of the sophisticated communication techniques for end to end synchronized exchange of information. Also referred as Visual Collaboration, AT&T was the first company that deployed the facility on its networks in 1970 on a wide scale. Including a satellite in the transfer chain produces the best quality signal; however, it is costly and widely used by companies and websites offering free video chat to its users. So, most of the service providers use a local server to exchange the audio and video information across the two communicating ends.

The first step involved in it is compression of the AV signal, by one of the compression methods to ensure maximum utilization of bandwidth. The compression technique is a combination of audio and video compression methods, which mostly leads to non-lossy output. In addition, the codec used for transmission may even enhance the binary information by applying filters, such as echo cancellation, noise reduction and texture enhancement.

The information before transmission is passed through an encoder to ensure its integrity. A server is used to establish a direct live link between the two ends, although the information is stored in the server for some time. The receiver side is equipped with a decoder to decode the incoming streaming signal to the original one. The service has witnessed an ever-increasing usage, due to an increase in the extend of internet usage and better transfer speeds. This often leads to network jam or congestion across free video chat websites; hence a number of premium services are also available nowadays. These premium services, offer each client a dedicated link rather allocating a random link to client from a pool of available ones. They charge for the dedicated links, but it is very small as compared to other exchange media.

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